physim rollouts — what the agents actually did

Each rollout below is reconstructed from its complete trace. The narrative log translates the agent's raw tool calls into a readable experiment sequence, with a lab-notebook timeline (top: drive the agent applied; bottom: what its most-watched sensors read). Then: the files it wrote (its instruments and theories), preparation-contract outcomes, its executable theory score, and every prediction contract vs ground truth. The verbatim call log is collapsed at the bottom. Best/median/worst rollout per pairing, plus the most artifact-rich.

anthropic--claude-fable-5--claude_code — C0 (2 rollouts, mean acc 0.932)

anthropic/claude-fable-5 · C0 seed 0 · tier tools · accuracy 0.95 · preparation 1.00 · theory 0.96 · budget 10%

S1=0.97 · S2=0.93 · S3=0.96 · S4=0.94 · coverage 1.00 · 153 nodes

Narrative experiment log

timeline
  1. 2× free run (700 ticks; 300 ticks, all inputs 0).
  2. ✗ drive → release rejected: series observation limited to <=6 channels.
  3. Single-port probe (250 ticks; port 0 at +0.08, 250t) — ch14 -0.04→-0.35, ch21 -0.49→-0.23, ch20 -0.16→+0.00.
  4. Free run (250 ticks; 250 ticks, all inputs 0).
  5. Reset to fresh initial conditions (−200 ticks).
  6. Free run (250 ticks; 250 ticks, all inputs 0).
  7. Single-port probe (200 ticks; port 1 at +0.08, 200t).
  8. Free run (200 ticks; 200 ticks, all inputs 0).
  9. Reset to fresh initial conditions (−200 ticks).
  10. Single-port probe (200 ticks; port 2 at +0.08, 200t).
  11. Free run (200 ticks; 200 ticks, all inputs 0).
  12. Reset to fresh initial conditions (−200 ticks).
  13. 3× single-port probe (600 ticks; port 3 at +0.08, 200t).
  14. 2× free run (300 ticks; 150 ticks, all inputs 0).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Single-port probe (250 ticks; port 0 at +0.17, 250t).
  17. Free run (150 ticks; 150 ticks, all inputs 0).
  18. Drive → release (320 ticks; drive -0.17 for 170t, release 150t) — ch29 -0.23→+0.64, ch20 -0.01→-0.72, ch8 +0.05→-0.44.
  19. Reset to fresh initial conditions (−200 ticks).
  20. Drive → release (300 ticks; drive -0.17 for 200t, release 100t).
  21. Reset to fresh initial conditions (−200 ticks).
  22. 3× single-port probe (700 ticks; port 1 at +0.17, 200t).
  23. Free run (120 ticks; 120 ticks, all inputs 0).
  24. Reset to fresh initial conditions (−200 ticks).
  25. 2× single-port probe (450 ticks; port 2 at +0.17, 200t) — ch16 +0.68→-0.25, ch2 +0.06→-0.57, ch13 +0.34→-0.28.
  26. Free run (120 ticks; 120 ticks, all inputs 0).
  27. Reset to fresh initial conditions (−200 ticks).
  28. 8× single-port probe (1,500 ticks; port 3 at +0.17, 200t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. 5× single-port probe (820 ticks; port 1 at -0.04, 180t) — ch0 -0.19→-0.90, ch1 +0.25→-0.42, ch11 +0.01→-0.48.
  31. 2× drive → release (740 ticks; drive +0.17 for 250t, release 120t).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Drive → release (770 ticks; drive -0.17 for 650t, release 120t).
  34. Reset to fresh initial conditions (−200 ticks).
  35. Single-port probe (170 ticks; port 0 at +0.05, 170t).
  36. Closed-loop policy (120 ticks; 120t — "simple feedback test: push ch20 toward -0.4 using port 0") — ch29 -0.33→+0.65, ch14 -0.04→-0.75, ch20 -0.10→-0.72.
  37. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  38. Submitted preparation policy for contract 100 ("Baseline attractor has ch15 ~= 0.417, well inside [-0.043, 0.863].").
  39. Submitted preparation policy for contract 101 ("Baseline attractor has ch21 ~= -0.489, well inside [-0.883, -0.111].").
  40. Submitted 16 contract answers.
  41. Submitted an executable theory (3,806 chars).

Agent-written files (its instruments & theories)

app/physim/notes.md (3,647 chars)
# Physim system notes (exploration phase)

## Interface
6 inputs, 30 sensors, noise sd ~0.03 per tick (SE of 20-tick mean ~0.007).
Reset costs 200. Budget at end of exploration: ~108k.

## Core structure
- Fresh draws settle (<250 ticks) to a COMMON baseline attractor:
  ch: 0:0.045 1:0.445 2:-0.167 3:-0.478 4:0.065 5:-0.516 6:-0.732 7:-0.755
  8:0.110 9:-0.510 10:0.305 11:0.148 12:-0.363 13:0.428 14:-0.033 15:0.417
  16:0.660 17:-0.281 18:-0.118 19:-0.483 20:-0.155 21:-0.489 22:-0.410
  23:0.366 24:-0.055 25:-0.035 26:-0.372 27:-0.527 28:0.620 29:-0.305
- Multistable with ONE-WAY (ratchet) latches: strong drives flip switches that persist
  after release and are NOT reversed by the opposite drive on the same port.
- Reproducible: same protocol from fresh draw → same final state (±0.01). Replay works.

## Port effects (drive 150-250 ticks)
- Port 0 (+0.5 or +1): flips latch A. Post-release: ch14→-0.31..-0.37, ch21→-0.27..-0.34,
  ch20→-0.03..-0.01, ch29→-0.17..-0.23. Threshold between 0.3 (no effect) and 0.5.
  Amplitude-dependent final state (0.5 vs 1.0 differ somewhat: ch2/ch24 latch at 0.5 not 1.0).
- Port 0 (-1): deep latch B. Post-release: ch8→-0.44, ch14→-0.77, ch20→-0.72, ch21→-0.65,
  ch29→+0.64 (sign flip). One-way (not reversed by +1 x250).
- Port 1 (-1): latch C. Post-release: ch0→-0.90, ch1→-0.43, ch10→-0.24, ch11→-0.48, ch24→-0.59.
  One-way (not reversed by +1 x250). Threshold between -0.75 (graded) and -1. Flip takes
  ~150-250 ticks at -1, with initial overshoot/oscillation before commitment.
  Graded reversible response below threshold: at -0.25: ch0 -0.065; -0.5: ch0 -0.11; -0.75: ch0 -0.19.
- Port 1 (+1): during drive ch0 +0.12, ch24 -0.15; latches ch24→-0.18..-0.20 (small partial latch).
- Port 2 (-1): latch D. Post-release: ch2→-0.55, ch13→-0.27, ch15→+0.62, ch16→-0.23, ch25→+0.45.
- Port 2 (+1): during drive ch2→+0.06 (from -0.17), ch15 +0.51, ch13 0.34, ch25 0.044; mostly
  reversible (ch2 relaxes to ~-0.10..-0.17), some small persistence.
- Port 3: INERT at ±1 (no visible effect, 150 ticks).
- Port 4: INERT at ±1.
- Port 5 (+1): during drive ch8→-0.05 (from 0.11), ch21→-0.34; after release ch8 stays ~-0.09 low-ish;
  at +0.5 ch8 latched to ~0.01.
- Port 5 (-1): ch20→-0.31, ch14→-0.16, ch29 wanders (slow quasi-oscillation, period ~100 ticks,
  amp ~0.1 on ch29/ch14/ch20). Elevated sd during drive.

## Dynamics
- Graded responses settle fast (<50-100 ticks). Latch flips take 100-250 ticks near threshold.
- Weak pushes (|u|<=0.3 on port 0) → near-zero response.
- After release, latched states are stable (no drift over 250+ ticks observed).

## Strategy for contracts
- PREDICTION: replay protocol on fresh draw (reset + run), read the requested channel; 2-3 reps
  where outcome may be stochastic (near-threshold). Intervals from rep spread + noise SE.
- PREPARATION: run_policy; CAUTION: one-way latches — cap |u| below flip thresholds unless flip
  desired; avoid integrator windup (a PI policy on port0 with gain 2 flipped the deep latch B
  instantly and could not recover).

## Final submissions (2026-08-12)
- 16 prediction answers submitted (see conversation); prep contracts 100/101: zero policies
  (baseline attractor already inside both bands: ch15=0.417 in [-0.043,0.863], ch21=-0.489 in [-0.883,-0.111]).
- Theory submitted: baseline + one-way latch deltas (A/B/C/Cp/D) with flip accumulators,
  amplitude-interpolated port0-positive latch, graded reversible terms, tau=25 relaxation.
- LESSON: physim_ready ends ALL experimentation (reset/run disabled) — unused 108k ticks lost.
  Replay-after-ready is NOT possible; must gather contract-relevant data before ready.
app/.vf-claude/c8d8aab04fbf4c65a39c8095b25f4aaf/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-12T18:32:38.784Z",
  "machineID": "e0fe24be1d443f1973f4c8832b8b1eabbbc77e90a525fb52a6468a44ff560004",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "d1b20d7d4facfbffd500a63636ee8817a0373e32b391bb31094f4ca81aa0f3af"
}
app/.vf-claude/c8d8aab04fbf4c65a39c8095b25f4aaf/tasks/8bc3ee11-615d-454f-ab4d-719a644eec7d/1.json (320 chars)
{
  "id": "1",
  "subject": "Probe step response of all 6 ports (±0.5) with latch check",
  "description": "For each port: step +0.5 200 ticks, release 200 ticks, record; reset. Same for -0.5 on interesting ports. Record which channels move and which latch.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}
app/.vf-claude/c8d8aab04fbf4c65a39c8095b25f4aaf/tasks/8bc3ee11-615d-454f-ab4d-719a644eec7d/2.json (251 chars)
{
  "id": "2",
  "subject": "Measure amplitude thresholds and time constants",
  "description": "Amplitude sweeps to find latch thresholds and saturation; series traces for time constants.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}
app/.vf-claude/c8d8aab04fbf4c65a39c8095b25f4aaf/tasks/8bc3ee11-615d-454f-ab4d-719a644eec7d/3.json (245 chars)
{
  "id": "3",
  "subject": "Identify latent structure and build quantitative model",
  "description": "PCA/regression on collected responses; fit model; simulate contract protocols.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}
app/.vf-claude/c8d8aab04fbf4c65a39c8095b25f4aaf/tasks/8bc3ee11-615d-454f-ab4d-719a644eec7d/4.json (232 chars)
{
  "id": "4",
  "subject": "Call ready, answer all contracts, submit theory",
  "description": "Reserve >20k ticks for contract-specific experiments after physim_ready.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}

Preparation contracts

idchannelbandsuccessreleased finals
10015[-0.04, +0.86]100%+0.40, +0.40, +0.40, +0.44
10121[-0.88, -0.11]100%-0.48, -0.48, -0.49, -0.49

Executable theory

accuracy 0.956 · per-stratum {'S1': 0.97, 'S2': 0.95, 'S3': 0.96, 'S4': 0.94} · 3,806 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.3010.2000.00.976
1S1+0.1150.2120.10.946
2S1+0.6660.2320.00.952
3S1+0.1440.1900.00.996
4S2-0.0660.2000.10.888
5S2+0.6580.2320.10.901
6S2-0.4820.2290.00.965
7S2-0.4860.2290.00.983
8S3-0.0320.2000.20.859
9S3-0.7680.2550.00.994
10S3-0.4350.2120.00.995
11S3-0.7580.2010.00.988
12S4+0.0800.2120.10.899
13S4+0.0950.2120.00.965
14S4-0.5130.2160.00.986
15S4-0.0580.2000.10.919
Verbatim log (130 entries)
physim.status({})
physim.status({})
{"budget_left": 120000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
I'll start by observing the baseline behavior with zero input, then probe each input port. Let me set up a workspace to record everything.
{"ticks_run": 300, "budget_left": 119700}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 6, 7, 16, 28], "series": true, "max_numbers": 360})
{"ticks_run": 400, "budget_left": 119300}
physim.run({"segments": [{"t": 250, "u": [0.5, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\"", "series": true, "max_numbers": 360})
{"error": "series observation limited to <=6 channels"}
physim.run({"segments": [{"t": 250, "u": [0.5, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 118550}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 118300}
physim.reset({})
{"budget_left": 118100}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 117850}
physim.run({"segments": [{"t": 200, "u": [0, 0.5, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 117650}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 117450}
physim.reset({})
Port 1 latches channel 24 (stays at -0.18 after release). Resetting and probing port 2.
{"budget_left": 117250}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0.5, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 117050}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 116850}
physim.reset({})
{"budget_left": 116650}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0.5, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 116450}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0.5, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 116250}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0.5]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 116050}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 115900}
physim.reset({})
{"budget_left": 115700}
physim.run({"segments": [{"t": 80, "u": [0, 0, 0, 0, 0, 0]}, {"t": 170, "u": [1, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 115450}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 115300}
physim.run({"segments": [{"t": 170, "u": [-1, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 320, "budget_left": 114980}
physim.reset({})
{"budget_left": 114780}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [-1, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 114480}
physim.reset({})
Reproducibility is excellent (matches to ~0.01 across different histories and fresh draws). Replay after `ready` will work. Now building a response library: each port at ±1.0, recording both during-drive and post-release states.
{"budget_left": 114280}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 1, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 114080}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, -1, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, -1, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 113830}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 120, "budget_left": 113710}
physim.reset({})
{"budget_left": 113510}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 1, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 113310}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, -1, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 113060}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 120, "budget_left": 112940}
physim.reset({})
{"budget_left": 112740}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 112540}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 112390}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 1, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 112240}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, -1, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, -1, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 112090}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 111940}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, -1]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 111690}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, -1]}], "channels": [8, 14, 20, 21, 29, 2], "series": true, "max_numbers": 360})
{"ticks_run": 300, "budget_left": 111390}
physim.reset({})
{"budget_left": 111190}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 130, "u": [0, -0.25, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2]})
{"ticks_run": 180, "budget_left": 111010}
physim.run({"segments": [{"t": 130, "u": [0, -0.5, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2]})
{"ticks_run": 130, "budget_left": 110880}
physim.run({"segments": [{"t": 130, "u": [0, -0.75, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2]})
{"ticks_run": 130, "budget_left": 110750}
physim.run({"segments": [{"t": 130, "u": [0, -1, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2]})
{"ticks_run": 130, "budget_left": 110620}
physim.run({"segments": [{"t": 250, "u": [0, -1, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2], "series": true, "max_numbers": 300})
Transition in progress (high sd). Continuing the drive with traces to watch the flip:
{"ticks_run": 250, "budget_left": 110370}
physim.run({"segments": [{"t": 250, "u": [0, 1, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2]})
The flip has ~150-250 tick dynamics with an initial overshoot before committing. Now testing whether +1 on port 1 un-flips the latch:
physim.run({"segments": [{"t": 250, "u": [0, 1, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 10, 11, 24, 2]})
The flip has ~150-250 tick dynamics with an initial overshoot before committing. Now testing whether +1 on port 1 un-flips the latch:
{"ticks_run": 370, "budget_left": 110000}
physim.reset({})
{"budget_left": 109800}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [-1, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [1, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0]}], )
{"ticks_run": 770, "budget_left": 109030}
physim.reset({})
Port 0's deep latch is also one-way. Now measuring graded (sub-threshold) response and relaxation time constant:
{"budget_left": 108830}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0.3, 0, 0, 0, 0, 0]}], "channels": [14, 20, 21, 24, 29, 8], "series": true, "max_numbers": 340})
{"ticks_run": 170, "budget_left": 108660}
physim.run_policy({"code": "def policy(t, y, mem):\n    # simple feedback test: push ch20 toward -0.4 using port 0\n    err = (-0.4) - y[20]\n    mem['i'] = mem.get('i', 0.0) + 0.02 * err\n    u0 = max(-1.0, min(1.0, 2)
{"ticks_run": 120, "budget_left": 108540}
Write: /app/physim/notes.md
physim.ready({})
Now calling ready to receive the contracts (108.5k ticks remain for replays):
{"phase": "answer"}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # Baseline attractor has ch15 ~= 0.417, well inside [-0.043, 0.863].\n    # Fresh draws settle to baseline on their own; any strong drive risks\n    # )
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Baseline attractor has ch21 ~= -0.489, well inside [-0.883, -0.111].\n    # Do nothing: fresh draws settle to baseline and stay there.\n    return [0)
physim.reset({})
Both prep policies recorded. Starting replay sweep 1 — contract 0-3 (baseline free run):
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": -0.306, "low": -0.335, "high": -0.278}, {"id": 1, "mean": 0.103, "low": 0.07, "high": 0.135}, {"id": 2, "mean": 0.655, "low": 0.625, "high": 0.685}, {"id": 3, "mean": 0.)
The `ready` call ended all experimentation — the remaining budget can't be used for replays (my earlier reproducibility checks now pay off). Fortunately my exploration library covers every contract regime directly. Deriving answers from recorded data:

- **ids 0-3** (free run → baseline): ch29 = -0.306, ch8 = 0.103, ch16 = 0.655, ch11 = 0.143 (6+ independent baseline samples each).
- **id 4** (por
{"received": 16}
physim.submit_theory({"code": "BASE = [0.045, 0.445, -0.167, -0.478, 0.065, -0.516, -0.732, -0.755, 0.103, -0.510,\n        0.305, 0.143, -0.363, 0.428, -0.033, 0.417, 0.655, -0.281, -0.118, -0.483,\n        -0.155, -0.48)
Investigation complete — all 16 prediction contracts answered, both preparation policies submitted, and an executable theory recorded.

## What the system turned out to be

A **multistable network with one-way (ratchet) latches**. Every fresh draw settles within ~250 ticks to a single common baseline attractor (30 sensors, noise sd ≈ 0.03). Strong drives flip discrete internal switches that persis
anthropic/claude-fable-5 · C0 seed 1 · tier tools · accuracy 0.91 · preparation 1.00 · theory 0.92 · budget 15%

S1=0.98 · S2=0.76 · S3=0.97 · S4=0.94 · coverage 0.94 · 174 nodes

Narrative experiment log

timeline
  1. 2× free run (600 ticks; 200 ticks, all inputs 0).
  2. 6× single-port probe (950 ticks; port 0 at +0.08, 200t).
  3. Free run (300 ticks; 300 ticks, all inputs 0).
  4. 2× single-port probe (750 ticks; port 2 at +0.05, 300t).
  5. Free run (1,200 ticks; 1200 ticks, all inputs 0).
  6. Reset to fresh initial conditions (−200 ticks).
  7. Free run (100 ticks; 100 ticks, all inputs 0).
  8. 3× single-port probe (360 ticks; port 0 at +0.17, 120t).
  9. 2× free run (200 ticks; 100 ticks, all inputs 0).
  10. Single-port probe (120 ticks; port 1 at -0.17, 120t) — ch14 +0.97→-0.08, ch6 -0.17→+0.52, ch5 -0.05→+0.59.
  11. Free run (100 ticks; 100 ticks, all inputs 0).
  12. 9× drive → release (2,080 ticks; drive +0.17 for 120t, release 100t).
  13. Reset to fresh initial conditions (−200 ticks).
  14. 3× single-port probe (420 ticks; port 4 at +0.17, 180t).
  15. 6× drive → release (1,680 ticks; drive -0.17 for 120t, release 60t) — ch8 +0.21→-0.88, ch22 +0.41→-0.44, ch0 +0.10→-0.57.
  16. Reset to fresh initial conditions (−200 ticks).
  17. 2× drive → release (490 ticks; drive -0.12 for 210t, release 100t) — ch8 +0.21→-0.89.
  18. Reset to fresh initial conditions (−200 ticks).
  19. Drive → release (350 ticks; drive -0.27 for 250t, release 100t).
  20. Reset to fresh initial conditions (−200 ticks).
  21. Reset to fresh initial conditions (−200 ticks).
  22. Drive → release (350 ticks; drive -0.22 for 250t, release 100t).
  23. Reset to fresh initial conditions (−200 ticks).
  24. 3× drive → release (1,370 ticks; drive +0.17 for 250t, release 100t) — ch13 -0.11→-0.32, ch2 +0.26→+0.09, ch14 +1.06→+0.90.
  25. Reset to fresh initial conditions (−200 ticks).
  26. 2× drive → release (1,200 ticks; drive +0.10 for 450t, release 100t).
  27. 2× multi-port probe (600 ticks; ports [1, 2] at -0.22, 300t).
  28. Reset to fresh initial conditions (−200 ticks).
  29. 2× multi-port probe (400 ticks; ports [1, 2] at -0.13, 190t).
  30. Drive → release (440 ticks; drive -0.22 for 360t, release 80t).
  31. Multi-port probe (840 ticks; ports [1, 2] at +0.33, 840t) — ch3 -0.60→+0.28, ch14 +1.03→+0.20, ch8 +0.18→-0.50.
  32. Free run (300 ticks; 300 ticks, all inputs 0) — ch27 +0.03→-0.17.
  33. Multi-port probe (700 ticks; ports [1, 2] at +0.33, 700t) — ch0 +0.06→-0.25, ch8 -0.49→-0.78, ch4 +0.23→-0.04.
  34. 2× free run (500 ticks; 250 ticks, all inputs 0).
  35. Reset to fresh initial conditions (−200 ticks).
  36. 2× multi-port probe (800 ticks; ports [0, 3, 4, 5] at +0.67, 200t) — ch14 +1.07→-0.10, ch8 +0.23→-0.89, ch22 +0.47→-0.44.
  37. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  38. Submitted 16 contract answers.
  39. Submitted preparation policy for contract 100 ("ch12 rests at -0.545 in every fresh draw, which is already inside the").
  40. Submitted preparation policy for contract 101 ("Latch subsystem S1 into its "down" attractor: ch2 then reads -0.48 +/- 0.03,").
  41. Submitted preparation policy for contract 101 ("Latch subsystem S1 into its "down" attractor: ch2 then reads -0.48 +/- 0.03,").
  42. Submitted an executable theory (2,856 chars).

Agent-written files (its instruments & theories)

app/physim/final_answers.md (1,418 chars)
# Final submissions (2026-08-12)

## Prediction contracts (id: mean [low, high] — rationale)
0: 0.005 [-0.032, 0.042] — ch0 baseline (zero input)
1: 0.543 [0.510, 0.576] — ch25 baseline
2: -0.542 [-0.575, -0.509] — ch12 baseline
3: 0.222 [0.185, 0.259] — ch8 baseline
4: 0.160 [0.070, 0.250] — ch0 during port2=+0.904 @339t (fast rise ~+0.22 eroded by slow adaptation)
5: 0.276 [0.240, 0.312] — ch4, port0 inert -> baseline
6: -0.280 [-0.345, -0.215] — ch27 during port2=+0.787 @286t (S1 channel, small S2-w coupling)
7: 0.005 [-0.032, 0.042] — ch0, port3 inert -> baseline
8: -0.830 [-0.862, -0.798] — ch13, S1 latched down by -1
9: -0.088 [-0.124, -0.052] — ch13, port0 inert -> baseline
10: -0.443 [-0.475, -0.411] — ch22, S2 latched down
11: 0.579 [0.547, 0.611] — ch5, S1 latched down
12: -0.168 [-0.220, -0.116] — ch6 after port1=+1 222t + ~670t rest (small persistent w-offset)
13: -0.471 [-0.503, -0.439] — ch16 never responds to anything
14: 0.276 [0.240, 0.312] — ch4, port0-only protocol -> baseline
15: -0.883 [-0.916, -0.850] — ch8, port2=-0.856 175t latches S2 (t_latch~75)

## Prep contracts
100 (ch12 in [-0.963,-0.118]): zero policy — baseline ch12=-0.545 already in band.
101 (ch2 in [-0.912,-0.049]): port1=-1 for 60 ticks -> S1 down, ch2=-0.48 permanent; feedback re-drive if y[2]>-0.25 at t=200.

## Theory
Two-unit bistable model (branch latch + fast v + slow w, linear 30-ch readout) submitted.
app/physim/model_notes.md (3,501 chars)
# System model (empirical)

## Architecture
Two independent excitable/bistable units: S1 driven by port1 (u[1]), S2 driven by port2 (u[2]).
Ports 0,3 inert. Ports 4,5 tiny positive coupling into S2-ish sensors (ch22 +0.07 at +1 combined, ch3 +0.06, ch0 +0.05) - mostly port5.
30 sensors = baseline + linear mix of unit states (v=fast bistable, w=slow adaptation) + noise sd~0.03.
Fresh draws (reset) always settle to the SAME baseline within ~50 ticks. Both units start "up", w=0.

## Baseline (settled, u=0), all channels
0: 0.007, 1: -0.401, 2: 0.279, 3: -0.547, 4: 0.272, 5: -0.155, 6: -0.185, 7: -0.420,
8: 0.219, 9: -0.300, 10: 0.473, 11: -0.400, 12: -0.545, 13: -0.088, 14: 1.053, 15: 0.407,
16: -0.470, 17: -0.635, 18: -0.445, 19: -0.235, 20: -0.219, 21: -0.492, 22: 0.398, 23: -0.220,
24: 0.315, 25: 0.542, 26: 0.357, 27: -0.305, 28: -0.092, 29: -0.652

## Attractor fingerprints (persistent at u=0)
S1 down (port1 neg latch) changes: ch2: -0.475, ch5: +0.580, ch6: +0.513, ch13: -0.830,
ch14: -0.088, ch19: -0.312, ch23: -0.300, ch27: -0.345 (others ~baseline)
S2 down (port2 neg latch) changes: ch0: -0.568, ch3: -0.758, ch4: -0.293, ch8: -0.882, ch22: -0.443
Both-down = union (independent, additive).
Down states are DEAD to further input (tested +/-1 all ports, feedthrough ~0) and stable >=600t.

## Negative drive on port1/port2 (from fresh baseline, per unit)
- |u| <= 0.45: graded shift, no/weak oscillation. At -0.4: ch8 0.13, ch0 -0.05, ch22 0.34, ch3 -0.58 (S2);
  ch14 0.97, ch13 -0.13, ch5 -0.09, ch6 -0.16 (S1). Relaxes back on release, no remanence.
- -0.5 to -0.65: limit-cycle oscillation, period ~47 ticks at -0.5, ~90+ at -0.65 (slows near latch boundary).
  Osc swings (approx): ch8 -0.37..+0.35, ch22 0.04..0.5, ch0 -0.26..+0.08, ch14 0.57..1.17, ch13 -0.43..+0.05, ch2 -0.0..0.4.
  Mean shifts down slightly. On release: returns to baseline, no remanence.
  At -0.65 FRESH: oscillated 300t, no latch. PRIMED with positive w: latched <300t.
- |u| >= 0.7: latches down. Time-to-latch: ~130t at 0.7, ~90t at 0.75, <=25t at 1.0 (10t pulse at -1 suffices;
  flip completes ballistically after pulse ends).

## Positive drive (per unit)
- Fast transient spike (e.g. ch14 +0.25 at u1=+1, settles ~100t), then SLOW adaptation creep (w) over hundreds of ticks.
- +0.25: negligible. +0.6 150t: modest (ch14 1.12 during, 0.99 after release).
- +1 200t: during ~1.0-1.1 ch14; release -> undershoot then persistent offset: ch14 0.90, ch13 -0.32, ch2 0.09, ch5 -0.01.
- +1 800t: still creeping: ch14 0.20, ch13 -0.76, ch8 -0.50, ch2 -0.37, ch3 +0.28(!), ch12 -0.26(!), ch27 +0.03(!)
- +1 1500t: ch14 -0.02, ch13 -0.82, ch8 -0.78, ch0 -0.25, ch3 +0.12, ch12 -0.18. Converging to a
  "adaptation-flipped" state, DISTINCT from down-down (ch3/ch12/ch27/ch0/ch4/ch22 differ).
  Released: stays (ch3 +0.10, ch12 -0.22, ch0 -0.23, ch8 -0.77, ch14 -0.005, ch13 -0.81, ch22 -0.34, ch4 -0.02, ch27 -0.17).
- w decays at rest VERY slowly (tau >~ 2000-5000; ~flat over 300-1200t windows).
- Negative subthreshold drive partially erases positive w.

## Noise
Per-tick sensor noise sd ~0.03; 20-tick tail mean sd ~0.007. Near-threshold latching is history-dependent
(w shifts boundary); away from threshold behavior is reproducible across draws.

## Strategy for contracts
Rehearse each contract protocol directly: reset -> run protocol -> read target sensor; repeat 2x where cheap.
Oscillating finals: wide intervals (phase aliasing of 20-tick window).
Budget left after exploration: ~102k ticks.
app/.vf-claude/a0279dded514448b998a8d20240c8e82/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-12T18:32:39.143Z",
  "machineID": "e13ef038880aae37b74a0a318b1fb6b5ab75da2ee55a6e6e062df34ce471ee20",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "f3f2c7e96e1807f2c483f5ca63fe8922624870e722aa9c7b01f6c0a62a26e03a"
}
app/physim/baseline.json (444 chars)
{"baseline": {"0": 0.0072, "1": -0.4012, "2": 0.2794, "3": -0.5473, "4": 0.2661, "5": -0.1547, "6": -0.1794, "7": -0.4133, "8": 0.2128, "9": -0.3005, "10": 0.4727, "11": -0.3958, "12": -0.5256, "13": -0.0777, "14": 1.0525, "15": 0.4063, "16": -0.4756, "17": -0.6401, "18": -0.4407, "19": -0.2432, "20": -0.2185, "21": -0.4954, "22": 0.3985, "23": -0.2166, "24": 0.3147, "25": 0.5392, "26": 0.3557, "27": -0.3128, "28": -0.0898, "29": -0.6649}}

Preparation contracts

idchannelbandsuccessreleased finals
10012[-0.96, -0.12]100%-0.55, -0.53, -0.54, -0.54
1012[-0.91, -0.05]100%-0.47, -0.48, -0.48, -0.48

Executable theory

accuracy 0.920 · per-stratum {'S1': 0.99, 'S2': 0.77, 'S3': 0.96, 'S4': 0.96} · 2,856 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.0110.1640.00.962
1S1+0.5400.2350.00.989
2S1-0.5410.2110.00.997
3S1+0.2190.2580.00.989
4S2+0.3290.1641.00.358
5S2+0.2450.2060.10.862
6S2-0.3070.2280.10.890
7S2+0.0170.1640.10.927
8S3-0.8230.1770.00.964
9S3-0.0990.1770.10.939
10S3-0.4400.1800.00.983
11S3+0.5790.2420.01.000
12S4-0.1420.1970.10.878
13S4-0.4700.2570.00.997
14S4+0.2960.2060.10.909
15S4-0.8790.2580.00.986
Verbatim log (159 entries)
physim.status({})
physim.status({})
{"budget_left": 120000, "phase": "explore"}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start by observing the baseline behavior with zero input, then probe each input port.
{"ticks_run": 200, "budget_left": 119800}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 119400}
Baseline is a stable fixed point (noise σ≈0.03). Now I'll set up a workspace log and probe each input port with steps.
physim.run({"segments": [{"t": 200, "u": [0.5, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 119200}
physim.run({"segments": [{"t": 150, "u": [1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 119050}
physim.run({"segments": [{"t": 150, "u": [0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 118900}
physim.run({"segments": [{"t": 150, "u": [0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 118750}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 1, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 118600}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 4, 5, 8, 13, 14], "series": true, "max_numbers": 360})
{"ticks_run": 300, "budget_left": 118300}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0.3, 0, 0, 0]}], "channels": [0, 3, 4, 8, 13, 22], "series": true})
{"ticks_run": 300, "budget_left": 118000}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, -0.3, 0, 0, 0]}], "channels": [0, 3, 4, 8, 13, 22], "series": true})
{"ticks_run": 450, "budget_left": 117550}
physim.run({"segments": [{"t": 1200, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 4, 8, 22, 3, 5], "series": true})
{"ticks_run": 1200, "budget_left": 116350}
physim.reset({})
{"budget_left": 116150}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 116050}
physim.run({"segments": [{"t": 120, "u": [1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 115930}
physim.run({"segments": [{"t": 120, "u": [-1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 115810}
physim.run({"segments": [{"t": 120, "u": [0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 115690}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 115590}
physim.run({"segments": [{"t": 120, "u": [0, -1, 0, 0, 0, 0]}], "channels": "all"})
Port 1 shows rebound/overshoot after release (adaptation-like). Continuing the map: port 1 negative, then ports 2–5.
{"ticks_run": 120, "budget_left": 115470}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 1 at −1 gives huge responses — strongly asymmetric nonlinearity. Checking release remanence.
{"ticks_run": 100, "budget_left": 115370}
physim.run({"segments": [{"t": 120, "u": [0, 1, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
Full remanence — the system latched into a different attractor! This is a bistable switch. Testing whether +1 flips it back.
{"ticks_run": 220, "budget_left": 115150}
physim.run({"segments": [{"t": 120, "u": [0, 0, 1, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 114950}
physim.run({"segments": [{"t": 120, "u": [0, 0, -1, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 114750}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, -1, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 114550}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -1, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -1, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 114350}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, -1]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 114150}
physim.run({"segments": [{"t": 250, "u": [0, 0, 1, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
Ports 3–5 don't latch anything. Testing flip-back with sustained positive drives on ports 2 and 1.
{"ticks_run": 330, "budget_left": 113820}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, -1, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 3, 4, 8, 22, 13], "series": true})
{"ticks_run": 330, "budget_left": 113490}
physim.reset({})
{"budget_left": 113290}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 180, "budget_left": 113110}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 112990}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, -1]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 112870}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -1, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 180, "budget_left": 112690}
physim.run({"segments": [{"t": 150, "u": [0, -0.5, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": [2, 5, 6, 13, 14, 27], "series": true})
physim.run({"segments": [{"t": 150, "u": [0, -0.5, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": [2, 5, 6, 13, 14, 27], "series": true})
{"ticks_run": 300, "budget_left": 112390}
physim.run({"segments": [{"t": 150, "u": [0, 0, -0.5, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 3, 4, 8, 22, 14], "series": true})
{"ticks_run": 300, "budget_left": 112090}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0.5, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 4, 8, 22, 3, 13], "series": true})
{"ticks_run": 350, "budget_left": 111740}
physim.run({"segments": [{"t": 150, "u": [0, 0, -0.75, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 4, 8, 22, 3, 14], "series": true})
{"ticks_run": 250, "budget_left": 111490}
physim.reset({})
S2 latched at −0.75 after ~2 oscillation cycles. Reset and bracket S1's threshold.
{"budget_left": 111290}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, -0.75, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": [13, 14, 6, 2, 5, 8], "series": true})
{"ticks_run": 310, "budget_left": 110980}
physim.run({"segments": [{"t": 25, "u": [0, 0, -1, 0, 0, 0]}, {"t": 155, "u": [0, 0, 0, 0, 0, 0]}], "channels": [0, 4, 8, 22, 3, 13], "series": true})
{"ticks_run": 180, "budget_left": 110800}
physim.reset({})
{"budget_left": 110600}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 10, "u": [0, -1, -0.6, 0, 0, 0]}, {"t": 190, "u": [0, 0, -0.6, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": [13, 14, 2, 0, 8, 22)
{"ticks_run": 350, "budget_left": 110250}
physim.reset({})
physim.reset({})
{"budget_left": 110050}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, -0.6, -0.7, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": [13, 14, 2, 0, 8, 22], "series": true})
{"ticks_run": 350, "budget_left": 109700}
physim.reset({})
{"budget_left": 109500}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 1, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}], "channels": [8, 0, 22, 13, 14, 4], "series": true})
{"ticks_run": 350, "budget_left": 109150}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -1, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [1, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 420, "budget_left": 108730}
physim.run({"segments": [{"t": 200, "u": [0, 1, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0]}], "channels": [13, 14, 2, 5, 6, 27], "series": true})
Confirmed: only ports 1 and 2 matter — two independent FHN-like units. Now measuring S1's positive-drive response and post-release rebound/remanence dynamics.
{"ticks_run": 600, "budget_left": 108130}
physim.reset({})
{"budget_left": 107930}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0.25, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0.6, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0])
{"ticks_run": 550, "budget_left": 107380}
physim.run({"segments": [{"t": 200, "u": [0, -0.2, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, -0.35, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0]}], "channels": [14, 13, 2, 5, 6, 2)
{"ticks_run": 650, "budget_left": 106730}
physim.run({"segments": [{"t": 300, "u": [0, -0.65, -0.65, 0, 0, 0]}], "channels": "all"})
Negative subthreshold drive partially erases positive remanence. Now testing −0.65 latch stochasticity on both ports simultaneously.
physim.run({"segments": [{"t": 300, "u": [0, -0.65, -0.65, 0, 0, 0]}], "channels": "all"})
Negative subthreshold drive partially erases positive remanence. Now testing −0.65 latch stochasticity on both ports simultaneously.
{"ticks_run": 300, "budget_left": 106430}
physim.reset({})
{"budget_left": 106230}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, -0.4, -0.4, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 190, "budget_left": 106040}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, -0.45, -0.45, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 210, "budget_left": 105830}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, -0.65, -0.65, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0]}], "channels": [14, 13, 8, 0, 22, 2], "series": true})
{"ticks_run": 440, "budget_left": 105390}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0]}, {"t": 800, "u": [0, 1, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 840, "budget_left": 104550}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 104250}
physim.run({"segments": [{"t": 700, "u": [0, 1, 1, 0, 0, 0]}], "channels": "all"})
Release from the long +1 drive: state stays shifted (huge persistent memory). Checking if the +1 asymptote has converged by driving another 700t.
{"ticks_run": 700, "budget_left": 103550}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 103300}
physim.reset({})
{"budget_left": 103100}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [1, 0, 0, 1, 1, 1]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 102900}
physim.run({"segments": [{"t": 600, "u": [0, -1, -1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 600, "budget_left": 102300}
Write: /app/physim/model_notes.md
physim.ready({})
{"phase": "answer"}
physim.reset({})
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": 0.005, "low": -0.032, "high": 0.042}, {"id": 1, "mean": 0.543, "low": 0.51, "high": 0.576}, {"id": 2, "mean": -0.542, "low": -0.575, "high": -0.509}, {"id": 3, "mean": 0)
Exploration is over — no more experiments allowed. My characterization covers every contract regime, so I'll answer from the model. Deriving each:

- **ids 0,1,2,3** (zero input): universal baseline values.
- **ids 5,7,9,14** (drives on ports 0/3, which are verified inert): baseline values.
- **ids 8,10,11** (port1/port2 = −1, then release): latched down-state fingerprints (deeply stable, measured
{"received": 16}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # ch12 rests at -0.545 in every fresh draw, which is already inside the\n    # target band [-0.963, -0.118]. Any input risks perturbing other latent\n )
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Latch subsystem S1 into its \"down\" attractor: ch2 then reads -0.48 +/- 0.03,\n    # comfortably inside the band [-0.912, -0.049], and the state is )
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Latch subsystem S1 into its \"down\" attractor: ch2 then reads -0.48 +/- 0.03,\n    # comfortably inside the band [-0.912, -0.049], and the state is )
physim.submit_theory({"code": "# Theory: two independent bistable/excitable units read out linearly by 30 sensors.\n# Unit 1 <- input port 1, Unit 2 <- input port 2. Ports 0,3,4,5 ~ inert.\n# Per unit: branch b (1=up base)
Write: /app/physim/final_answers.md
Done — all 16 prediction contracts answered, both preparation policies submitted, and an executable theory recorded.

## What the system turned out to be

Two **independent bistable/excitable units**, one driven by input port 1, the other by port 2 (ports 0, 3, 4, 5 are essentially inert). The 30 sensors are noisy linear mixtures of the two units' states. Key discovered physics:

- **Universal bas

openai--gpt-5.2--codex — C0 (2 rollouts, mean acc 0.683)

openai/gpt-5.2 · C0 seed 0 · tier tools · accuracy 0.82 · preparation 1.00 · budget 61%

S1=0.99 · S2=0.86 · S3=0.53 · S4=0.91 · coverage 0.88 · 371 nodes

Narrative experiment log

timeline
  1. Free run (200 ticks; 200 ticks, all inputs 0).
  2. Reset to fresh initial conditions (−200 ticks).
  3. Single-port probe (300 ticks; port 0 at +0.17, 300t).
  4. Reset to fresh initial conditions (−200 ticks).
  5. Single-port probe (120 ticks; port 0 at +0.17, 120t).
  6. Reset to fresh initial conditions (−200 ticks).
  7. Single-port probe (150 ticks; port 0 at +0.17, 150t).
  8. Reset to fresh initial conditions (−200 ticks).
  9. Single-port probe (200 ticks; port 0 at +0.17, 200t).
  10. Reset to fresh initial conditions (−200 ticks).
  11. Single-port probe (300 ticks; port 0 at +0.17, 300t).
  12. Reset to fresh initial conditions (−200 ticks).
  13. Single-port probe (500 ticks; port 0 at +0.17, 500t).
  14. Reset to fresh initial conditions (−200 ticks).
  15. Single-port probe (2,100 ticks; port 0 at +0.17, 2100t).
  16. Reset to fresh initial conditions (−200 ticks).
  17. Single-port probe (4,100 ticks; port 0 at +0.17, 4100t).
  18. Reset to fresh initial conditions (−200 ticks).
  19. Free run (200 ticks; 200 ticks, all inputs 0).
  20. 2× single-port probe (2,040 ticks; port 0 at +0.17, 40t) — ch29 -0.48→+0.56, ch14 +0.01→-0.77, ch8 +0.20→-0.41.
  21. Reset to fresh initial conditions (−200 ticks).
  22. Free run (200 ticks; 200 ticks, all inputs 0).
  23. 2× single-port probe (2,040 ticks; port 0 at -0.17, 40t) — ch29 +0.35→+0.64, ch14 -0.50→-0.79, ch8 -0.26→-0.44.
  24. Reset to fresh initial conditions (−200 ticks).
  25. Free run (200 ticks; 200 ticks, all inputs 0).
  26. 2× single-port probe (2,040 ticks; port 1 at +0.17, 40t) — ch0 +0.24→-0.81, ch1 +0.59→-0.40, ch11 +0.28→-0.47.
  27. Reset to fresh initial conditions (−200 ticks).
  28. Free run (200 ticks; 200 ticks, all inputs 0).
  29. 2× single-port probe (2,040 ticks; port 1 at -0.17, 40t) — ch0 -0.62→-0.91, ch1 -0.16→-0.43, ch11 -0.30→-0.49.
  30. Reset to fresh initial conditions (−200 ticks).
  31. Free run (200 ticks; 200 ticks, all inputs 0).
  32. 2× single-port probe (2,040 ticks; port 2 at +0.17, 40t) — ch16 +0.83→-0.24, ch13 +0.51→-0.28, ch25 -0.08→+0.46.
  33. Reset to fresh initial conditions (−200 ticks).
  34. Free run (200 ticks; 200 ticks, all inputs 0).
  35. 2× single-port probe (2,040 ticks; port 2 at -0.17, 40t) — ch16 -0.00→-0.25, ch13 -0.10→-0.27.
  36. Reset to fresh initial conditions (−200 ticks).
  37. Free run (200 ticks; 200 ticks, all inputs 0).
  38. 2× single-port probe (2,040 ticks; port 3 at +0.17, 40t).
  39. Reset to fresh initial conditions (−200 ticks).
  40. Free run (200 ticks; 200 ticks, all inputs 0).
  41. 2× single-port probe (2,040 ticks; port 3 at -0.17, 40t).
  42. Reset to fresh initial conditions (−200 ticks).
  43. Free run (200 ticks; 200 ticks, all inputs 0).
  44. 2× single-port probe (2,040 ticks; port 4 at +0.17, 40t).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Free run (200 ticks; 200 ticks, all inputs 0).
  47. 2× single-port probe (2,040 ticks; port 4 at -0.17, 40t).
  48. Reset to fresh initial conditions (−200 ticks).
  49. Free run (200 ticks; 200 ticks, all inputs 0).
  50. 2× single-port probe (2,040 ticks; port 5 at +0.17, 40t) — ch29 -0.44→+0.23, ch14 +0.07→-0.54, ch8 +0.13→-0.41.
  51. Reset to fresh initial conditions (−200 ticks).
  52. Free run (200 ticks; 200 ticks, all inputs 0).
  53. 2× single-port probe (2,040 ticks; port 5 at -0.17, 40t) — ch29 +0.01→+0.65, ch14 -0.26→-0.79, ch8 -0.03→-0.43.
  54. Reset to fresh initial conditions (−200 ticks).
  55. Free run (200 ticks; 200 ticks, all inputs 0).
  56. 2× single-port probe (2,040 ticks; port 0 at +0.08, 40t) — ch29 -0.42→+0.35, ch14 -0.00→-0.74, ch21 -0.46→+0.07.
  57. Reset to fresh initial conditions (−200 ticks).
  58. Free run (200 ticks; 200 ticks, all inputs 0).
  59. 2× single-port probe (2,040 ticks; port 0 at -0.08, 40t) — ch14 -0.13→+0.12, ch2 -0.16→-0.33.
  60. Reset to fresh initial conditions (−200 ticks).
  61. Free run (200 ticks; 200 ticks, all inputs 0).
  62. 2× single-port probe (2,040 ticks; port 1 at +0.08, 40t) — ch1 +0.54→-0.20, ch0 +0.15→-0.51, ch10 +0.37→-0.20.
  63. Reset to fresh initial conditions (−200 ticks).
  64. Free run (200 ticks; 200 ticks, all inputs 0).
  65. 2× single-port probe (2,040 ticks; port 1 at -0.08, 40t) — ch2 -0.15→-0.38, ch16 +0.66→+0.48, ch25 -0.01→-0.18.
  66. Reset to fresh initial conditions (−200 ticks).
  67. Free run (200 ticks; 200 ticks, all inputs 0).
  68. 2× single-port probe (2,040 ticks; port 5 at +0.08, 40t) — ch8 +0.13→-0.32, ch29 -0.39→-0.02, ch20 -0.12→-0.48.
  69. Reset to fresh initial conditions (−200 ticks).
  70. Free run (200 ticks; 200 ticks, all inputs 0).
  71. 2× single-port probe (2,040 ticks; port 5 at -0.08, 40t) — ch8 +0.07→+0.23, ch2 -0.15→-0.30.
  72. Reset to fresh initial conditions (−200 ticks).
  73. 2× single-port probe (4,200 ticks; port 0 at +0.17, 2200t) — ch21 -0.02→-0.38, ch20 -0.47→-0.71.
  74. Reset to fresh initial conditions (−200 ticks).
  75. 2× single-port probe (4,200 ticks; port 1 at +0.17, 2200t).
  76. Reset to fresh initial conditions (−200 ticks).
  77. 5× single-port probe (4,200 ticks; port 0 at +0.17, 2200t) — ch21 -0.22→-0.39.
  78. Reset to fresh initial conditions (−200 ticks).
  79. Free run (200 ticks; 200 ticks, all inputs 0).
  80. 4× single-port probe (2,000 ticks; port 0 at -0.17, 200t).
  81. Reset to fresh initial conditions (−200 ticks).
  82. 5× single-port probe (4,200 ticks; port 1 at +0.17, 2200t).
  83. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  84. Submitted preparation policy for contract 100 (65 chars).
  85. Submitted preparation policy for contract 101 (65 chars).
  86. Submitted 16 contract answers.

Agent-written files (its instruments & theories)

app/answers.json (1,914 chars)
[
  {
    "high": -0.11772145638489279,
    "id": 0,
    "low": -0.4827732804572124,
    "mean": -0.3002473684210526
  },
  {
    "high": 0.28723952904623773,
    "id": 1,
    "low": -0.05215531851992182,
    "mean": 0.11754210526315796
  },
  {
    "high": 0.7686851508093282,
    "id": 2,
    "low": 0.5638937965590931,
    "mean": 0.6662894736842107
  },
  {
    "high": 0.2680551747195472,
    "id": 3,
    "low": 0.029976404227821135,
    "mean": 0.14901578947368416
  },
  {
    "high": 0.009670071357409826,
    "id": 4,
    "low": -0.35065789480221865,
    "mean": -0.1704939117224044
  },
  {
    "high": 0.7251085566568792,
    "id": 5,
    "low": 0.5203172024066441,
    "mean": 0.6227128795317617
  },
  {
    "high": -0.38359529380551805,
    "id": 6,
    "low": -0.583595293805518,
    "mean": -0.483595293805518
  },
  {
    "high": -0.3857954979006232,
    "id": 7,
    "low": -0.5857954979006232,
    "mean": -0.4857954979006232
  },
  {
    "high": 0.14853777695197026,
    "id": 8,
    "low": -0.2117901892076582,
    "mean": -0.03162620612784397
  },
  {
    "high": 0.2609947110418557,
    "id": 9,
    "low": -0.22110693341703383,
    "mean": 0.019943888812410916
  },
  {
    "high": 0.3025016304356889,
    "id": 10,
    "low": -0.036893217130470696,
    "mean": 0.13280420665260909
  },
  {
    "high": -0.6576783280746763,
    "id": 11,
    "low": -0.8576783280746763,
    "mean": -0.7576783280746763
  },
  {
    "high": 0.2869281866269948,
    "id": 12,
    "low": -0.05246666093916477,
    "mean": 0.11723076284391501
  },
  {
    "high": 0.2869937243203825,
    "id": 13,
    "low": -0.05240112324577709,
    "mean": 0.1172963005373027
  },
  {
    "high": -0.4083348451690775,
    "id": 14,
    "low": -0.6083348451690774,
    "mean": -0.5083348451690775
  },
  {
    "high": 0.13507422301306982,
    "id": 15,
    "low": -0.22525374314655866,
    "mean": -0.04508976006674442
  }
]
app/contracts.json (2,177 chars)
[
  {"id": 0, "sensor": 29, "protocol": [{"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 1, "sensor": 8, "protocol": [{"t": 220, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 2, "sensor": 16, "protocol": [{"t": 231, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 3, "sensor": 11, "protocol": [{"t": 203, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 4, "sensor": 24, "protocol": [{"t": 323, "u": [0.885, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 5, "sensor": 16, "protocol": [{"t": 381, "u": [0.774, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 6, "sensor": 19, "protocol": [{"t": 305, "u": [-0.848, 0.0, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 7, "sensor": 19, "protocol": [{"t": 333, "u": [0.0, -0.891, 0.0, 0.0, 0.0, 0.0]}]},
  {"id": 8, "sensor": 24, "protocol": [
    {"t": 296, "u": [0.0, 0.0, -1.0, 0.0, 0.0, 0.0]},
    {"t": 330, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 9, "sensor": 14, "protocol": [
    {"t": 264, "u": [-1.0, 0.0, 0.0, 0.0, 0.0, 0.0]},
    {"t": 325, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 10, "sensor": 8, "protocol": [
    {"t": 285, "u": [-1.0, 0.0, 0.0, 0.0, 0.0, 0.0]},
    {"t": 475, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 11, "sensor": 7, "protocol": [
    {"t": 286, "u": [-1.0, 0.0, 0.0, 0.0, 0.0, 0.0]},
    {"t": 496, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 12, "sensor": 8, "protocol": [
    {"t": 262, "u": [0.0, 0.887, 0.0, 0.0, 0.0, 0.0]},
    {"t": 208, "u": [0.0, 0.0, -0.942, 0.0, 0.0, 0.0]},
    {"t": 560, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 13, "sensor": 8, "protocol": [
    {"t": 208, "u": [0.0, 0.0, 0.901, 0.0, 0.0, 0.0]},
    {"t": 193, "u": [0.0, 0.0, -0.869, 0.0, 0.0, 0.0]},
    {"t": 491, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 14, "sensor": 9, "protocol": [
    {"t": 234, "u": [0.0, 0.0, 0.833, 0.0, 0.0, 0.0]},
    {"t": 214, "u": [0.0, -0.919, 0.0, 0.0, 0.0, 0.0]},
    {"t": 554, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]},
  {"id": 15, "sensor": 24, "protocol": [
    {"t": 265, "u": [0.919, 0.0, 0.0, 0.0, 0.0, 0.0]},
    {"t": 226, "u": [0.0, 0.0, -0.986, 0.0, 0.0, 0.0]},
    {"t": 471, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}
  ]}
]
app/data/baseline_zero_200.json (767 chars)
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app/data/duration_u0_1_L100.json (784 chars)
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app/data/port_steps/u0_pos1_then_neg1_relax.json (2,614 chars)
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app/data/port_steps/u1_neg0.5.json (1,199 chars)
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app/data/port_steps/u1_neg1.json (1,203 chars)
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app/data/port_steps/u1_pos0.5.json (1,199 chars)
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app/data/port_steps/u1_pos1.json (1,198 chars)
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app/data/port_steps/u1_pos1_then_neg1.json (878 chars)
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app/data/port_steps/u1_pos1_then_neg1_relax.json (2,630 chars)
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app/data/port_steps/u2_neg1.json (1,199 chars)
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app/data/port_steps/u2_pos1.json (1,194 chars)
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app/data/port_steps/u3_neg1.json (1,195 chars)
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app/data/port_steps/u3_pos1.json (1,192 chars)
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app/data/port_steps/u4_neg1.json (1,193 chars)
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app/data/port_steps/u4_pos1.json (1,195 chars)
{"port":4,"amp":1,"warmup_t":200,"short_t":40,"long_t":2000,
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app/data/port_steps/u5_neg0.5.json (1,198 chars)
{"port":5,"amp":-0.5,"warmup_t":200,"short_t":40,"long_t":2000,
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app/data/port_steps/u5_neg1.json (1,197 chars)
{"port":5,"amp":-1,"warmup_t":200,"short_t":40,"long_t":2000,
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app/data/port_steps/u5_pos0.5.json (1,195 chars)
{"port":5,"amp":0.5,"warmup_t":200,"short_t":40,"long_t":2000,
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app/data/port_steps/u5_pos1.json (1,193 chars)
{"port":5,"amp":1,"warmup_t":200,"short_t":40,"long_t":2000,
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app/fit_model.py (7,095 chars)
from __future__ import annotations

import json
from pathlib import Path
from typing import Any, Dict, List, Tuple

import numpy as np

from model import Params, simulate_tail_mean


DATA_DIR = Path("data")
PORT_DIR = DATA_DIR / "port_steps"


def _load_json(path: Path) -> Dict[str, Any]:
    return json.loads(path.read_text())


def _dict_to_vec(d: Dict[str, float]) -> np.ndarray:
    v = np.zeros(30, dtype=float)
    for k, val in d.items():
        v[int(k)] = float(val)
    return v


def _mean_y0_from_port_steps() -> np.ndarray:
    y0s = []
    for p in sorted(PORT_DIR.glob("u*.json")):
        raw = _load_json(p)
        if "y0" in raw:
            y0s.append(_dict_to_vec(raw["y0"]))
    if not y0s:
        raise RuntimeError("no y0 entries found under data/port_steps")
    return np.mean(np.stack(y0s, axis=0), axis=0)


def _k(beta: float, T: int) -> float:
    return 1.0 - (1.0 - beta) ** T


def _fit_ABC_for_beta(beta: float) -> Tuple[np.ndarray, np.ndarray, np.ndarray, np.ndarray]:
    """
    Fit per-sensor bilinear model:
      delta = A*u + B*m + C*(u*m)
      m_T = k(T)*u  (for constant u from m0=0)

    Uses per-port step datasets in data/port_steps/*.json.
    Returns (b, A, B, C).
    """
    b = _mean_y0_from_port_steps()

    A = np.zeros((30, 6), dtype=float)
    B = np.zeros((30, 6), dtype=float)
    C = np.zeros((30, 6), dtype=float)

    # For each port, build regression across all amplitudes/signs and both durations
    for port in range(6):
        X_rows: List[List[float]] = []
        Y_rows: List[np.ndarray] = []

        for p in sorted(PORT_DIR.glob(f"u{port}_*.json")):
            raw = _load_json(p)
            if "amp" not in raw:
                continue
            amp = float(raw["amp"])
            y0 = _dict_to_vec(raw["y0"])

            # observation 1: after short segment (40 ticks)
            T_short = int(raw.get("short_t", 40))
            k_short = _k(beta, T_short)
            ys = _dict_to_vec(raw["y_short"])
            d_short = ys - y0
            m_short = k_short * amp
            X_rows.append([amp, m_short, amp * m_short])
            Y_rows.append(d_short)

            # observation 2: after long segment (short + long ticks total)
            T_long_total = int(raw.get("short_t", 40)) + int(raw.get("long_t", 2000))
            k_long = _k(beta, T_long_total)
            yl = _dict_to_vec(raw["y_long"])
            d_long = yl - y0
            m_long = k_long * amp
            X_rows.append([amp, m_long, amp * m_long])
            Y_rows.append(d_long)

        # Add sequence constraints (absolute y, referenced to mean baseline b)
        seq_path = PORT_DIR / f"u{port}_pos1_then_neg1.json"
        if seq_path.exists():
            raw = _load_json(seq_path)
            seq = raw["seq"]
            if len(seq) >= 3:
                T_pos = int(seq[1]["t"])
                T_neg = int(seq[2]["t"])
                a_pow_pos = (1.0 - beta) ** T_pos
                a_pow_neg = (1.0 - beta) ** T_neg

                m_pos_end = 1.0 - a_pow_pos  # starting from 0, driven by +1
                m_neg_end = -1.0 + (m_pos_end + 1.0) * a_pow_neg

                y_obs_pos = _dict_to_vec(raw["y_after_pos"]) - b
                y_obs_neg = _dict_to_vec(raw["y_after_neg"]) - b

                # pos observation
                X_rows.append([1.0, m_pos_end, 1.0 * m_pos_end])
                Y_rows.append(y_obs_pos)

                # neg observation (note u=-1)
                X_rows.append([-1.0, m_neg_end, (-1.0) * m_neg_end])
                Y_rows.append(y_obs_neg)

        # Add relaxation traces (absolute y, referenced to mean baseline b)
        neg_relax = PORT_DIR / f"u{port}_neg1_relax.json"
        if neg_relax.exists():
            raw = _load_json(neg_relax)
            for item in raw.get("y_after_neg", []):
                t_total = int(item["neg_t_total"])
                m_end = -_k(beta, t_total)  # starts from 0, driven by -1
                y_obs = _dict_to_vec(item["tail_mean"]) - b
                X_rows.append([-1.0, m_end, (-1.0) * m_end])
                Y_rows.append(y_obs)

        posneg_relax = PORT_DIR / f"u{port}_pos1_then_neg1_relax.json"
        if posneg_relax.exists():
            raw = _load_json(posneg_relax)
            T_pos = int(raw["pos"]["t"])
            a_pow_pos = (1.0 - beta) ** T_pos
            m_pos_end = 1.0 - a_pow_pos
            for item in raw.get("y_after_neg", []):
                t_total = int(item["neg_t_total"])
                a_pow = (1.0 - beta) ** t_total
                m_end = -1.0 + (m_pos_end + 1.0) * a_pow
                y_obs = _dict_to_vec(item["tail_mean"]) - b
                X_rows.append([-1.0, m_end, (-1.0) * m_end])
                Y_rows.append(y_obs)

        if len(X_rows) < 3:
            raise RuntimeError(f"not enough observations to fit port {port}: {len(X_rows)}")

        X = np.asarray(X_rows, dtype=float)  # (n,3)
        Y = np.stack(Y_rows, axis=0)  # (n,30)

        # Solve X * Theta ~= Y for Theta (3,30)
        Theta, *_ = np.linalg.lstsq(X, Y, rcond=None)
        A[:, port] = Theta[0, :]
        B[:, port] = Theta[1, :]
        C[:, port] = Theta[2, :]

    return b, A, B, C


def _score_beta(beta: float, params: Params) -> float:
    mse = 0.0
    n = 0

    # sequence validation: pos then neg
    for path in sorted(PORT_DIR.glob("u*_pos1_then_neg1.json")):
        raw = _load_json(path)
        segments = [{"t": int(s["t"]), "u": s["u"]} for s in raw["seq"]]

        y_pred_pos = simulate_tail_mean(params, segments[:2], tail=20)
        y_pred_neg = simulate_tail_mean(params, segments, tail=20)

        y_obs_pos = _dict_to_vec(raw["y_after_pos"])
        y_obs_neg = _dict_to_vec(raw["y_after_neg"])

        mse += float(np.mean((y_pred_pos - y_obs_pos) ** 2))
        mse += float(np.mean((y_pred_neg - y_obs_neg) ** 2))
        n += 2

    # long-hold validation: subset sensors from time-series run
    tail_path = DATA_DIR / "long_u0_1_4000_tail.json"
    if tail_path.exists():
        raw = _load_json(tail_path)
        y_pred = simulate_tail_mean(params, raw["protocol"], tail=20)
        for k, obs in raw["tail_mean"].items():
            idx = int(k)
            mse += float((y_pred[idx] - float(obs)) ** 2)
            n += 1

    if n == 0:
        return float("inf")
    return mse / n


def main() -> None:
    betas = np.logspace(-5.0, -2.2, 55)  # ~[1e-5, 6e-3]
    best = None

    for beta in betas:
        try:
            b, A, B, C = _fit_ABC_for_beta(float(beta))
            params = Params(beta=float(beta), b=b, A=A, B=B, C=C)
            score = _score_beta(float(beta), params)
        except Exception:
            continue

        if best is None or score < best[0]:
            best = (score, float(beta), params)

    if best is None:
        raise SystemExit("failed to fit any beta")

    score, beta, params = best
    out_path = Path("model_params.json")
    params.to_json(out_path)
    print(json.dumps({"beta": beta, "score": score, "out": str(out_path)}, indent=2))


if __name__ == "__main__":
    main()
app/model.py (2,823 chars)
from __future__ import annotations

import json
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Dict, List

import numpy as np


@dataclass(frozen=True)
class Params:
    beta: float
    b: np.ndarray  # (30,)
    A: np.ndarray  # (30,6) coefficient on u
    B: np.ndarray  # (30,6) coefficient on state m
    C: np.ndarray  # (30,6) coefficient on u*m (bilinear)

    @staticmethod
    def from_json(path: str | Path) -> "Params":
        raw = json.loads(Path(path).read_text())
        return Params(
            beta=float(raw["beta"]),
            b=np.asarray(raw["b"], dtype=float),
            A=np.asarray(raw["A"], dtype=float),
            B=np.asarray(raw["B"], dtype=float),
            C=np.asarray(raw["C"], dtype=float),
        )

    def to_json(self, path: str | Path) -> None:
        raw = {
            "beta": float(self.beta),
            "b": self.b.tolist(),
            "A": self.A.tolist(),
            "B": self.B.tolist(),
            "C": self.C.tolist(),
        }
        Path(path).write_text(json.dumps(raw, indent=2, sort_keys=True) + "\n")


def simulate_tail_mean(params: Params, segments: List[Dict[str, Any]], tail: int = 20) -> np.ndarray:
    """
    Simulate and return mean y over the final `tail` ticks.
    Supports hold segments (u) and linear ramps (u_start/u_end).
    """
    beta = float(params.beta)
    a = 1.0 - beta

    m = np.zeros(6, dtype=float)

    y_tail: List[np.ndarray] = []

    def tick(u: np.ndarray) -> np.ndarray:
        nonlocal m
        u = np.asarray(u, dtype=float)
        m = a * m + beta * u

        um = u * m
        y = params.b + params.A @ u + params.B @ m + params.C @ um
        return np.clip(y, -1.0, 1.0)

    total_ticks = sum(int(seg["t"]) for seg in segments)
    record_from = max(0, total_ticks - int(tail))

    t_now = 0
    for seg in segments:
        T = int(seg["t"])
        if "u" in seg:
            u = np.asarray(seg["u"], dtype=float)
            for _ in range(T):
                y = tick(u)
                if t_now >= record_from:
                    y_tail.append(y)
                t_now += 1
        else:
            u0 = np.asarray(seg["u_start"], dtype=float)
            u1 = np.asarray(seg["u_end"], dtype=float)
            if T <= 1:
                y = tick(u1)
                if t_now >= record_from:
                    y_tail.append(y)
                t_now += 1
            else:
                for k in range(T):
                    w = k / (T - 1)
                    u = (1 - w) * u0 + w * u1
                    y = tick(u)
                    if t_now >= record_from:
                        y_tail.append(y)
                    t_now += 1

    if not y_tail:
        return np.zeros(30, dtype=float)
    return np.mean(np.stack(y_tail, axis=0), axis=0)

app/model_params.json (17,219 chars)
{
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  "C": [
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  "beta": 0.00630957344480193
}
app/predict_contracts.py (4,545 chars)
from __future__ import annotations

import json
from pathlib import Path
from typing import Any, Dict, List, Tuple

import numpy as np

from model import Params, simulate_tail_mean


DATA_DIR = Path("data")
PORT_DIR = DATA_DIR / "port_steps"


def _load_json(path: Path) -> Dict[str, Any]:
    return json.loads(path.read_text())


def _dict_to_vec(d: Dict[str, float]) -> np.ndarray:
    v = np.zeros(30, dtype=float)
    for k, val in d.items():
        v[int(k)] = float(val)
    return v


def _build_step_protocol(port: int, amp: float, total_t: int) -> List[Dict[str, Any]]:
    u = [0.0] * 6
    u[port] = float(amp)
    return [{"t": 200, "u": [0.0] * 6}, {"t": int(total_t), "u": u}]


def _collect_validation_cases() -> List[Tuple[List[Dict[str, Any]], np.ndarray]]:
    cases: List[Tuple[List[Dict[str, Any]], np.ndarray]] = []

    # step cases
    for p in sorted(PORT_DIR.glob("u*_*.json")):
        raw = _load_json(p)
        if "amp" not in raw or "y0" not in raw:
            continue
        port = int(raw["port"])
        amp = float(raw["amp"])

        y_short = _dict_to_vec(raw["y_short"])
        T_short = int(raw.get("short_t", 40))
        cases.append((_build_step_protocol(port, amp, T_short), y_short))

        y_long = _dict_to_vec(raw["y_long"])
        T_long = int(raw.get("short_t", 40)) + int(raw.get("long_t", 2000))
        cases.append((_build_step_protocol(port, amp, T_long), y_long))

    # sequence + relax cases
    for p in sorted(PORT_DIR.glob("u*_pos1_then_neg1.json")):
        raw = _load_json(p)
        segs = [{"t": int(s["t"]), "u": s["u"]} for s in raw["seq"]]
        cases.append((segs[:2], _dict_to_vec(raw["y_after_pos"])))
        cases.append((segs, _dict_to_vec(raw["y_after_neg"])))

    for p in sorted(PORT_DIR.glob("u*_pos1_then_neg1_relax.json")):
        raw = _load_json(p)
        warm = {"t": int(raw["warmup"]["t"]), "u": raw["warmup"]["u"]}
        pos = {"t": int(raw["pos"]["t"]), "u": raw["pos"]["u"]}
        base = [warm, pos]
        cases.append((base, _dict_to_vec(raw["y_after_pos"])))
        for item in raw.get("y_after_neg", []):
            t_total = int(item["neg_t_total"])
            segs = base + [{"t": t_total, "u": raw["neg_stages"][0]["u"]}]
            cases.append((segs, _dict_to_vec(item["tail_mean"])))

    for p in sorted(PORT_DIR.glob("u*_neg1_relax.json")):
        raw = _load_json(p)
        warm = {"t": int(raw["warmup"]["t"]), "u": raw["warmup"]["u"]}
        base = [warm]
        for item in raw.get("y_after_neg", []):
            t_total = int(item["neg_t_total"])
            segs = base + [{"t": t_total, "u": raw["neg_stages"][0]["u"]}]
            cases.append((segs, _dict_to_vec(item["tail_mean"])))

    # long-series tail subset
    long_tail = DATA_DIR / "long_u0_1_4000_tail.json"
    if long_tail.exists():
        raw = _load_json(long_tail)
        y_obs = np.full(30, np.nan, dtype=float)
        for k, v in raw["tail_mean"].items():
            y_obs[int(k)] = float(v)
        cases.append((raw["protocol"], y_obs))

    return cases


def estimate_sensor_sigmas(params: Params) -> np.ndarray:
    cases = _collect_validation_cases()
    se = np.zeros(30, dtype=float)
    n = np.zeros(30, dtype=int)

    for protocol, y_obs in cases:
        y_pred = simulate_tail_mean(params, protocol, tail=20)
        mask = ~np.isnan(y_obs)
        err = (y_pred - y_obs)[mask]
        idxs = np.nonzero(mask)[0]
        se[idxs] += err**2
        n[idxs] += 1

    rmse = np.sqrt(np.where(n > 0, se / np.maximum(n, 1), 0.0))
    # floor uncertainty at typical sensor noise (~0.03) and add a bit for misspecification
    sigma = np.maximum(0.05, 1.25 * rmse)
    return sigma


def main() -> None:
    params = Params.from_json("model_params.json")
    sigmas = estimate_sensor_sigmas(params)

    contracts_path = Path("contracts.json")
    contracts = json.loads(contracts_path.read_text())

    answers = []
    for c in contracts:
        cid = int(c["id"])
        sensor = int(c["sensor"])
        protocol = c["protocol"]
        y_mean = float(simulate_tail_mean(params, protocol, tail=20)[sensor])

        s = float(sigmas[sensor])
        low = max(-1.0, y_mean - 2.0 * s)
        high = min(1.0, y_mean + 2.0 * s)
        answers.append({"id": cid, "mean": y_mean, "low": low, "high": high})

    Path("answers.json").write_text(json.dumps(answers, indent=2, sort_keys=True) + "\n")
    print(json.dumps({"n_contracts": len(answers), "out": "answers.json"}, indent=2))


if __name__ == "__main__":
    main()

Preparation contracts

idchannelbandsuccessreleased finals
10015[-0.04, +0.86]100%+0.40, +0.40, +0.40, +0.44
10121[-0.88, -0.11]100%-0.48, -0.48, -0.49, -0.49

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.3010.2000.00.996
1S1+0.1150.2120.00.987
2S1+0.6660.2320.00.999
3S1+0.1440.1900.00.973
4S2-0.0660.2000.50.594
5S2+0.6580.2320.20.858
6S2-0.4820.2290.00.992
7S2-0.4860.2290.00.999
8S3-0.0320.2000.01.000
9S3-0.7680.2553.10.045
10S3-0.4350.2122.70.069
11S3-0.7580.2010.00.996
12S4+0.0800.2120.20.841
13S4+0.0950.2120.10.902
14S4-0.5130.2160.00.978
15S4-0.0580.2000.10.937
Verbatim log (117 entries)
{"budget_left": 120000, "phase": "explore"}
{"ticks_run": 200, "budget_left": 119800}
{"budget_left": 119600}
{"ticks_run": 300, "budget_left": 119300}
{"budget_left": 119100}
{"ticks_run": 120, "budget_left": 118980}
{"budget_left": 118780}
{"ticks_run": 150, "budget_left": 118630}
{"budget_left": 118430}
{"ticks_run": 200, "budget_left": 118230}
{"budget_left": 118030}
{"ticks_run": 300, "budget_left": 117730}
{"budget_left": 117530}
{"ticks_run": 500, "budget_left": 117030}
{"budget_left": 116830}
{"ticks_run": 2100, "budget_left": 114730}
{"budget_left": 114530}
{"ticks_run": 4100, "budget_left": 110430}
{"budget_left": 110230}
{"ticks_run": 200, "budget_left": 110030}
{"ticks_run": 40, "budget_left": 109990}
{"ticks_run": 2000, "budget_left": 107990}
{"budget_left": 107790}
{"ticks_run": 200, "budget_left": 107590}
{"ticks_run": 40, "budget_left": 107550}
{"ticks_run": 2000, "budget_left": 105550}
{"budget_left": 105350}
{"ticks_run": 200, "budget_left": 105150}
{"ticks_run": 40, "budget_left": 105110}
{"ticks_run": 2000, "budget_left": 103110}
{"budget_left": 102910}
{"ticks_run": 200, "budget_left": 102710}
{"ticks_run": 40, "budget_left": 102670}
{"ticks_run": 2000, "budget_left": 100670}
{"budget_left": 100470}
{"ticks_run": 200, "budget_left": 100270}
{"ticks_run": 40, "budget_left": 100230}
{"ticks_run": 2000, "budget_left": 98230}
{"budget_left": 98030}
{"ticks_run": 200, "budget_left": 97830}
{"ticks_run": 40, "budget_left": 97790}
{"ticks_run": 2000, "budget_left": 95790}
{"budget_left": 95590}
{"ticks_run": 200, "budget_left": 95390}
{"ticks_run": 40, "budget_left": 95350}
{"ticks_run": 2000, "budget_left": 93350}
{"budget_left": 93150}
{"ticks_run": 200, "budget_left": 92950}
{"ticks_run": 40, "budget_left": 92910}
{"ticks_run": 2000, "budget_left": 90910}
{"budget_left": 90710}
{"ticks_run": 200, "budget_left": 90510}
{"ticks_run": 40, "budget_left": 90470}
{"ticks_run": 2000, "budget_left": 88470}
{"budget_left": 88270}
{"ticks_run": 200, "budget_left": 88070}
{"ticks_run": 40, "budget_left": 88030}
{"ticks_run": 2000, "budget_left": 86030}
{"budget_left": 85830}
{"ticks_run": 200, "budget_left": 85630}
{"ticks_run": 40, "budget_left": 85590}
{"ticks_run": 2000, "budget_left": 83590}
{"budget_left": 83390}
{"ticks_run": 200, "budget_left": 83190}
{"ticks_run": 40, "budget_left": 83150}
{"ticks_run": 2000, "budget_left": 81150}
{"budget_left": 80950}
{"ticks_run": 200, "budget_left": 80750}
{"ticks_run": 40, "budget_left": 80710}
{"ticks_run": 2000, "budget_left": 78710}
{"budget_left": 78510}
{"ticks_run": 200, "budget_left": 78310}
{"ticks_run": 40, "budget_left": 78270}
{"ticks_run": 2000, "budget_left": 76270}
{"budget_left": 76070}
{"ticks_run": 200, "budget_left": 75870}
{"ticks_run": 40, "budget_left": 75830}
{"ticks_run": 2000, "budget_left": 73830}
{"budget_left": 73630}
{"ticks_run": 200, "budget_left": 73430}
{"ticks_run": 40, "budget_left": 73390}
{"ticks_run": 2000, "budget_left": 71390}
{"budget_left": 71190}
{"ticks_run": 200, "budget_left": 70990}
{"ticks_run": 40, "budget_left": 70950}
{"ticks_run": 2000, "budget_left": 68950}
{"budget_left": 68750}
{"ticks_run": 200, "budget_left": 68550}
{"ticks_run": 40, "budget_left": 68510}
{"ticks_run": 2000, "budget_left": 66510}
{"budget_left": 66310}
{"ticks_run": 2200, "budget_left": 64110}
{"ticks_run": 2000, "budget_left": 62110}
{"budget_left": 61910}
{"ticks_run": 2200, "budget_left": 59710}
{"ticks_run": 2000, "budget_left": 57710}
{"budget_left": 57510}
{"ticks_run": 2200, "budget_left": 55310}
{"ticks_run": 200, "budget_left": 55110}
{"ticks_run": 300, "budget_left": 54810}
{"ticks_run": 500, "budget_left": 54310}
{"ticks_run": 1000, "budget_left": 53310}
{"budget_left": 53110}
{"ticks_run": 200, "budget_left": 52910}
{"ticks_run": 200, "budget_left": 52710}
{"ticks_run": 300, "budget_left": 52410}
{"ticks_run": 500, "budget_left": 51910}
{"ticks_run": 1000, "budget_left": 50910}
{"budget_left": 50710}
{"ticks_run": 2200, "budget_left": 48510}
{"ticks_run": 200, "budget_left": 48310}
{"ticks_run": 300, "budget_left": 48010}
{"ticks_run": 500, "budget_left": 47510}
{"ticks_run": 1000, "budget_left": 46510}
{"phase": "answer"}
{"received": 16}
Submitted predictions for all 16 contracts via `physim_answer` and submitted both preparation policies (`id` 100 and 101) via `physim_answer_prep`.

Artifacts saved in the workspace:
- `model_params.json` (fitted model parameters)
- `contracts.json` (parsed contracts)
- `answers.json` (generated predictions + intervals)
- `predict_contracts.py`, `fit_model.py`, `model.py` (model + tooling)
- `data
openai/gpt-5.2 · C0 seed 1 · tier tools · accuracy 0.54 · preparation 0.75 · budget 83%

S1=0.67 · S2=0.80 · S3=0.30 · S4=0.40 · coverage 0.75 · 265 nodes

Narrative experiment log

timeline
  1. ✗ free run rejected: series observation limited to <=6 channels.
  2. Free run (300 ticks; 300 ticks, all inputs 0).
  3. Reset to fresh initial conditions (−200 ticks).
  4. Single-port probe (1,000 ticks; port 0 at +0.17, 1000t).
  5. Free run (500 ticks; 500 ticks, all inputs 0).
  6. Single-port probe (500 ticks; port 0 at +0.17, 500t).
  7. Free run (500 ticks; 500 ticks, all inputs 0).
  8. Single-port probe (500 ticks; port 1 at +0.17, 500t) — ch14 +1.02→+0.41, ch13 -0.14→-0.69, ch27 -0.28→+0.19.
  9. Free run (500 ticks; 500 ticks, all inputs 0).
  10. Reset to fresh initial conditions (−200 ticks).
  11. Free run (500 ticks; 500 ticks, all inputs 0).
  12. Reset to fresh initial conditions (−200 ticks).
  13. 2× single-port probe (3,000 ticks; port 1 at +0.17, 1000t) — ch14 +0.16→-0.07, ch27 -0.09→-0.26.
  14. Free run (2,000 ticks; 2000 ticks, all inputs 0).
  15. Single-port probe (2,000 ticks; port 1 at -0.17, 2000t) — ch12 -0.26→-0.45.
  16. Reset to fresh initial conditions (−200 ticks).
  17. Drive → release (750 ticks; drive +0.17 for 250t, release 500t).
  18. Reset to fresh initial conditions (−200 ticks).
  19. Drive → release (800 ticks; drive +0.17 for 300t, release 500t).
  20. Reset to fresh initial conditions (−200 ticks).
  21. Drive → release (900 ticks; drive +0.17 for 400t, release 500t).
  22. Reset to fresh initial conditions (−200 ticks).
  23. Drive → release (1,100 ticks; drive +0.17 for 600t, release 500t).
  24. Reset to fresh initial conditions (−200 ticks).
  25. Drive → release (1,500 ticks; drive +0.17 for 1000t, release 500t).
  26. Reset to fresh initial conditions (−200 ticks).
  27. Drive → release (1,300 ticks; drive +0.17 for 800t, release 500t).
  28. Free run (1,000 ticks; 1000 ticks, all inputs 0).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Free run (3,000 ticks; 3000 ticks, all inputs 0).
  31. Reset to fresh initial conditions (−200 ticks).
  32. Free run (3,000 ticks; 3000 ticks, all inputs 0).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Free run (500 ticks; 500 ticks, all inputs 0).
  35. Single-port probe (1,500 ticks; port 0 at +0.17, 1500t) — ch5 -0.17→+0.08, ch2 +0.26→+0.48, ch22 +0.39→+0.20.
  36. Free run (500 ticks; 500 ticks, all inputs 0).
  37. Reset to fresh initial conditions (−200 ticks).
  38. Free run (500 ticks; 500 ticks, all inputs 0).
  39. Single-port probe (1,500 ticks; port 0 at -0.17, 1500t) — ch2 +0.26→+0.02, ch6 -0.18→+0.02, ch5 -0.19→-0.39.
  40. Free run (500 ticks; 500 ticks, all inputs 0).
  41. Reset to fresh initial conditions (−200 ticks).
  42. Free run (500 ticks; 500 ticks, all inputs 0).
  43. 2× single-port probe (4,000 ticks; port 1 at +0.17, 2000t) — ch27 +0.47→-0.20, ch12 -0.11→-0.48.
  44. Free run (500 ticks; 500 ticks, all inputs 0).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Drive → release (3,000 ticks; drive -0.17 for 2500t, release 500t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. Free run (500 ticks; 500 ticks, all inputs 0).
  49. Single-port probe (20 ticks; port 1 at +0.17, 20t).
  50. Reset to fresh initial conditions (−200 ticks).
  51. Drive → release (2,000 ticks; drive +0.17 for 1200t, release 800t).
  52. Reset to fresh initial conditions (−200 ticks).
  53. Drive → release (2,000 ticks; drive +0.17 for 1500t, release 500t).
  54. Reset to fresh initial conditions (−200 ticks).
  55. Drive → release (2,000 ticks; drive +0.08 for 1100t, release 900t).
  56. Reset to fresh initial conditions (−200 ticks).
  57. Multi-port probe (2,000 ticks; ports [0, 2, 5] at -0.17, 2000t).
  58. Reset to fresh initial conditions (−200 ticks).
  59. Ramp sweep (2,000 ticks; 2000 ticks, peak mean drive +0.17).
  60. Reset to fresh initial conditions (−200 ticks).
  61. Ramp sweep (2,000 ticks; 2000 ticks, peak mean drive -0.17).
  62. Reset to fresh initial conditions (−200 ticks).
  63. Single-port probe (2,000 ticks; port 3 at +0.17, 2000t).
  64. Reset to fresh initial conditions (−200 ticks).
  65. Single-port probe (2,000 ticks; port 4 at +0.17, 2000t).
  66. Reset to fresh initial conditions (−200 ticks).
  67. Single-port probe (2,000 ticks; port 5 at +0.17, 2000t).
  68. Reset to fresh initial conditions (−200 ticks).
  69. Drive → release (2,000 ticks; drive +0.08 for 1400t, release 600t).
  70. Reset to fresh initial conditions (−200 ticks).
  71. Multi-port probe (2,000 ticks; ports [0, 1, 2] at +0.17, 2000t).
  72. Reset to fresh initial conditions (−200 ticks).
  73. Multi-port probe (2,000 ticks; ports [0, 1] at +0.17, 2000t).
  74. Reset to fresh initial conditions (−200 ticks).
  75. Drive → release (2,000 ticks; drive +0.17 for 1500t, release 500t).
  76. Reset to fresh initial conditions (−200 ticks).
  77. Drive → release (2,000 ticks; drive +0.17 for 900t, release 1100t).
  78. Reset to fresh initial conditions (−200 ticks).
  79. Free run (500 ticks; 500 ticks, all inputs 0).
  80. Reset to fresh initial conditions (−200 ticks).
  81. Free run (500 ticks; 500 ticks, all inputs 0).
  82. Reset to fresh initial conditions (−200 ticks).
  83. Free run (500 ticks; 500 ticks, all inputs 0).
  84. Reset to fresh initial conditions (−200 ticks).
  85. Free run (500 ticks; 500 ticks, all inputs 0).
  86. Reset to fresh initial conditions (−200 ticks).
  87. Free run (500 ticks; 500 ticks, all inputs 0).
  88. Reset to fresh initial conditions (−200 ticks).
  89. Drive → release (2,000 ticks; drive +0.50 for 1400t, release 600t).
  90. Reset to fresh initial conditions (−200 ticks).
  91. Multi-port probe (2,000 ticks; ports [0, 1] at -0.33, 2000t).
  92. Reset to fresh initial conditions (−200 ticks).
  93. Drive → release (2,000 ticks; drive +0.17 for 800t, release 1200t).
  94. Reset to fresh initial conditions (−200 ticks).
  95. Drive → release (2,000 ticks; drive +0.17 for 800t, release 1200t).
  96. Reset to fresh initial conditions (−200 ticks).
  97. Drive → release (2,000 ticks; drive +0.17 for 800t, release 1200t).
  98. Reset to fresh initial conditions (−200 ticks).
  99. Drive → release (2,000 ticks; drive +0.17 for 800t, release 1200t).
  100. Reset to fresh initial conditions (−200 ticks).
  101. Ramp sweep (2,000 ticks; 2000 ticks, peak mean drive +0.17).
  102. Reset to fresh initial conditions (−200 ticks).
  103. Ramp sweep (2,000 ticks; 2000 ticks, peak mean drive +0.17).
  104. Reset to fresh initial conditions (−200 ticks).
  105. Multi-port probe (2,000 ticks; ports [2, 3] at -0.17, 2000t).
  106. Reset to fresh initial conditions (−200 ticks).
  107. Drive → release (2,000 ticks; drive +0.33 for 1500t, release 500t).
  108. Reset to fresh initial conditions (−200 ticks).
  109. Single-port probe (2,000 ticks; port 1 at +0.05, 2000t).
  110. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  111. Submitted preparation policy for contract 100 ("Goal: after release + 285-tick free run (u=0), y[12] mean stays in [-0.963, -0.118].").
  112. Submitted preparation policy for contract 101 ("Goal: after release + 276-tick free run (u=0), y[2] mean stays in [-0.912, -0.049].").
  113. Submitted 16 contract answers.

Agent-written files (its instruments & theories)

app/physim/dataset.py (27,824 chars)
EXPERIMENTS = [
    {
        "id": "E1",
        "segments": [
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            {"t": 200, "u": [0, 1, 0, 0, 0, 0]},
            {"t": 400, "u": [0, 0, 0.5, 0, 0, 0]},
            {"t": 100, "u": [0, 0, 0, 0, -1, 0]},
            {"t": 800, "u": [0, 0, 0, 0, 0, 0]},
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        "y": [
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    {
        "id": "E2",
        "segments": [
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            {"t": 400, "u": [1, 0, 0, 0, 0, 0]},
            {"t": 200, "u": [0, 0, 0, 1, 0, 0]},
            {"t": 400, "u": [0, -1, 0, 0, 0, 0]},
            {"t": 500, "u": [0, 0, 0, 0, 0.5, -0.5]},
        ],
        "y": [
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    {
        "id": "E3",
        "segments": [
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            {"t": 200, "u": [0, 0.5, 0, 0, 0, 0]},
            {"t": 200, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 200, "u": [0, -0.5, 0, 0, 0, 0]},
            {"t": 900, "u": [0, 0, 0, 0, 0, 0]},
        ],
        "y": [
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    {
        "id": "E4",
        "segments": [
            {"t": 500, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 800, "u": [-1, 0, 0, 0, 0, 0]},
            {"t": 200, "u": [0, 0, 1, 0, 0, 0]},
            {"t": 200, "u": [0, 0, 0, 0, 0, 1]},
            {"t": 300, "u": [0, 0, 0, 0, 0, 0.5]},
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        "y": [
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    },
    {
        "id": "E5",
        "segments": [
            {"t": 500, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 500, "u_start": [0, 0, 0, 0, 0, 0], "u_end": [0, 1, 0, 0, 0, 0]},
            {"t": 500, "u": [0, 1, 0, 0, 0, 0]},
            {"t": 500, "u_start": [0, 1, 0, 0, 0, 0], "u_end": [0, 0, 0, 0, 0, 0]},
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        "y": [
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    {
        "id": "E6",
        "segments": [
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            {"t": 500, "u_start": [0, 0, 0, 0, 0, 0], "u_end": [0, -1, 0, 0, 0, 0]},
            {"t": 500, "u": [0, -1, 0, 0, 0, 0]},
            {"t": 500, "u_start": [0, -1, 0, 0, 0, 0], "u_end": [0, 0, 0, 0, 0, 0]},
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        "y": [
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    {
        "id": "E7",
        "segments": [
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            {"t": 500, "u": [0, 0, 0, -1, 0, 0]},
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        "y": [
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    {
        "id": "E8",
        "segments": [
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            {"t": 600, "u": [0, 0, 0, 0, 1, 0]},
            {"t": 400, "u": [0, 0, 0, 0, -1, 0]},
            {"t": 500, "u": [0, 0, 0, 0, 1, 0]},
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        "y": [
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    {
        "id": "E9",
        "segments": [
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            {"t": 1000, "u": [0, 0, 0, 0, 0, 1]},
            {"t": 500, "u": [0, 0, 0, 0, 0, -1]},
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        "y": [
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    },
    {
        "id": "E10",
        "segments": [
            {"t": 500, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 300, "u": [1, -1, 0.5, 0, 0, 0]},
            {"t": 300, "u": [-0.5, 1, -1, 0.5, 0, 0]},
            {"t": 300, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 600, "u": [0.2, -0.2, 0.2, -0.2, 0.2, -0.2]},
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        "y": [
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    {
        "id": "E11",
        "segments": [
            {"t": 500, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 700, "u": [0.5, 0, 0, 0, 0, 0]},
            {"t": 300, "u": [0, 0.5, 0, 0, 0, 0]},
            {"t": 480, "u": [0, 0, 0, 0, 0, 0]},
            {"t": 20, "u": [0, 0, 1, 0, 0, 0]},
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        "y": [
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        "id": "E12",
        "segments": [
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        "y": [
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    {
        "id": "E13",
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        "y": [
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    {
        "id": "E14",
        "segments": [
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    },
    {
        "id": "B1",
        "segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0]}],
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    },
    {
        "id": "B2",
        "segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0]}],
        "y": [
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    },
    {
        "id": "B3",
        "segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0]}],
        "y": [
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app/physim/features.py (2,922 chars)
from __future__ import annotations

from dataclasses import dataclass

import numpy as np


def _as_u_vec(x: list[float]) -> np.ndarray:
    v = np.asarray(x, dtype=float)
    if v.shape != (6,):
        raise ValueError(f"expected 6-vector, got shape {v.shape}")
    return v


def segments_to_u(segments: list[dict]) -> np.ndarray:
    """
    Returns u[t, j] for t=0..T-1, j=0..5.
    Hold segments: {"t": N, "u": [...]}
    Ramp segments: {"t": N, "u_start":[...], "u_end":[...]}
    """
    chunks: list[np.ndarray] = []
    for seg in segments:
        n = int(seg["t"])
        if n <= 0:
            continue
        if "u" in seg:
            u = _as_u_vec(seg["u"])
            chunks.append(np.broadcast_to(u[None, :], (n, 6)).copy())
            continue
        if "u_start" in seg and "u_end" in seg:
            u0 = _as_u_vec(seg["u_start"])
            u1 = _as_u_vec(seg["u_end"])
            if n == 1:
                chunks.append(u1[None, :].copy())
            else:
                # Linear interpolation across ticks. Exact convention unknown; this is close enough for features.
                frac = np.linspace(0.0, 1.0, n, endpoint=True, dtype=float)[:, None]
                chunks.append((u0[None, :] + frac * (u1 - u0)[None, :]).astype(float))
            continue
        raise ValueError(f"unrecognized segment format: {seg}")
    if not chunks:
        return np.zeros((0, 6), dtype=float)
    return np.vstack(chunks)


@dataclass(frozen=True)
class FeatureSpec:
    recent_ticks: int = 100


def compute_features(segments: list[dict], spec: FeatureSpec | None = None) -> np.ndarray:
    """
    Feature vector for a protocol.

    Per input channel j:
      - pos_total, neg_total
      - tv_total
      - last_u
      - pos_recent, neg_recent
      - tv_recent
      - max_u, min_u
    """
    if spec is None:
        spec = FeatureSpec()

    u = segments_to_u(segments)
    if u.shape[0] == 0:
        # Bias only + zeros for the rest.
        return np.zeros((1 + 6 * 9,), dtype=float)

    pos = np.maximum(u, 0.0)
    neg = np.maximum(-u, 0.0)

    pos_total = pos.sum(axis=0)
    neg_total = neg.sum(axis=0)

    du = np.diff(u, axis=0, prepend=u[:1])
    tv_total = np.abs(du).sum(axis=0)

    last_u = u[-1]

    recent = min(int(spec.recent_ticks), u.shape[0])
    u_recent = u[-recent:]
    pos_recent = np.maximum(u_recent, 0.0).sum(axis=0)
    neg_recent = np.maximum(-u_recent, 0.0).sum(axis=0)

    du_recent = np.diff(u_recent, axis=0, prepend=u_recent[:1])
    tv_recent = np.abs(du_recent).sum(axis=0)

    max_u = u.max(axis=0)
    min_u = u.min(axis=0)

    parts = [
        np.array([1.0], dtype=float),
        pos_total,
        neg_total,
        tv_total,
        last_u,
        pos_recent,
        neg_recent,
        tv_recent,
        max_u,
        min_u,
    ]
    return np.concatenate(parts, axis=0)


def feature_dim() -> int:
    return 1 + 6 * 9

app/physim/fit.py (2,529 chars)
from __future__ import annotations

import json
from dataclasses import asdict

import numpy as np

from physim.dataset import EXPERIMENTS
from physim.features import FeatureSpec, compute_features, feature_dim


def _ridge_fit(X: np.ndarray, Y: np.ndarray, lam: float) -> np.ndarray:
    # Solve (X^T X + lam I) W = X^T Y
    n_feat = X.shape[1]
    a = X.T @ X
    a.flat[:: n_feat + 1] += lam
    b = X.T @ Y
    return np.linalg.solve(a, b)


def main() -> None:
    spec = FeatureSpec(recent_ticks=100)
    X = np.stack([compute_features(e["segments"], spec=spec) for e in EXPERIMENTS], axis=0)
    if X.shape[1] != feature_dim():
        raise RuntimeError(f"feature dim mismatch: {X.shape}")

    Y = np.stack([np.asarray(e["y"], dtype=float) for e in EXPERIMENTS], axis=0)
    if Y.shape[1] != 30:
        raise RuntimeError(f"expected 30 sensors, got {Y.shape}")

    rng = np.random.default_rng(0)
    idx = np.arange(X.shape[0])
    rng.shuffle(idx)
    split = int(0.8 * len(idx))
    train_idx = idx[:split]
    val_idx = idx[split:]

    Xtr, Ytr = X[train_idx], Y[train_idx]
    Xva, Yva = X[val_idx], Y[val_idx]

    # Standardize non-bias features using training statistics.
    mu = Xtr[:, 1:].mean(axis=0)
    std = Xtr[:, 1:].std(axis=0)
    std = np.where(std <= 1e-12, 1.0, std)

    def xform(Z: np.ndarray) -> np.ndarray:
        Zs = Z.copy()
        Zs[:, 1:] = (Zs[:, 1:] - mu[None, :]) / std[None, :]
        return Zs

    Xtr_s = xform(Xtr)
    Xva_s = xform(Xva)

    lam = 10.0
    W = _ridge_fit(Xtr_s, Ytr, lam=lam)

    Yhat_tr = Xtr_s @ W
    Yhat_va = Xva_s @ W

    rmse_tr = np.sqrt(np.mean((Yhat_tr - Ytr) ** 2, axis=0))
    rmse_va = np.sqrt(np.mean((Yhat_va - Yva) ** 2, axis=0))

    # Conservative interval scale: combine validation residual with an assumed observation noise floor.
    noise_floor = 0.03
    sigma = np.sqrt(rmse_va**2 + noise_floor**2)

    out = {
        "n_experiments": int(X.shape[0]),
        "n_train": int(Xtr.shape[0]),
        "n_val": int(Xva.shape[0]),
        "lambda": lam,
        "feature_spec": asdict(spec),
        "feature_mu": mu.tolist(),
        "feature_std": std.tolist(),
        "rmse_train": rmse_tr.tolist(),
        "rmse_val": rmse_va.tolist(),
        "sigma": sigma.tolist(),
        "val_ids": [EXPERIMENTS[i]["id"] for i in val_idx.tolist()],
    }

    np.savez("physim/model.npz", W=W, sigma=sigma, mu=mu, std=std, meta=json.dumps(out))
    print(json.dumps(out, indent=2, sort_keys=True))


if __name__ == "__main__":
    main()
app/physim/predict.py (1,600 chars)
from __future__ import annotations

import json
from dataclasses import asdict

import numpy as np

from physim.features import FeatureSpec, compute_features


def load_model(path: str = "physim/model.npz") -> tuple[np.ndarray, np.ndarray, dict]:
    data = np.load(path, allow_pickle=False)
    w = data["W"].astype(float)
    sigma = data["sigma"].astype(float)
    mu = data["mu"].astype(float)
    std = data["std"].astype(float)
    meta = json.loads(str(data["meta"]))
    meta["feature_mu"] = mu.tolist()
    meta["feature_std"] = std.tolist()
    return w, sigma, meta


def predict_protocol(
    segments: list[dict],
    w: np.ndarray,
    sigma: np.ndarray,
    spec: FeatureSpec,
    feature_mu: np.ndarray,
    feature_std: np.ndarray,
    z: float = 2.0,
) -> tuple[np.ndarray, np.ndarray, np.ndarray]:
    x = compute_features(segments, spec=spec)
    x = x.copy()
    x[1:] = (x[1:] - feature_mu) / feature_std
    yhat = x @ w
    low = yhat - z * sigma
    high = yhat + z * sigma
    return yhat, low, high


def main() -> None:
    w, sigma, meta = load_model()
    spec = FeatureSpec(**meta["feature_spec"])
    mu = np.asarray(meta["feature_mu"], dtype=float)
    std = np.asarray(meta["feature_std"], dtype=float)
    # Simple smoke test: predict baseline.
    yhat, low, high = predict_protocol(
        [{"t": 500, "u": [0, 0, 0, 0, 0, 0]}],
        w=w,
        sigma=sigma,
        spec=spec,
        feature_mu=mu,
        feature_std=std,
    )
    print(json.dumps({"feature_spec": asdict(spec), "baseline_mean": yhat.tolist()}))


if __name__ == "__main__":
    main()

Preparation contracts

idchannelbandsuccessreleased finals
10012[-0.96, -0.12]100%-0.55, -0.53, -0.54, -0.54
1012[-0.91, -0.05]50%-0.05, -0.04, -0.05, -0.07

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.0110.1640.10.865
1S1+0.5400.2350.70.515
2S1-0.5410.2110.70.477
3S1+0.2190.2580.20.839
4S2+0.3290.1640.50.631
5S2+0.2450.2060.00.996
6S2-0.3070.2280.50.612
7S2+0.0170.1640.10.948
8S3-0.8230.1772.90.054
9S3-0.0990.1770.10.933
10S3-0.4400.1802.60.071
11S3+0.5790.2421.90.147
12S4-0.1420.1971.20.296
13S4-0.4700.2570.50.585
14S4+0.2960.2060.40.665
15S4-0.8790.2583.00.048
Verbatim log (115 entries)
{"budget_left": 120000, "phase": "explore"}
{"error": "series observation limited to <=6 channels"}
{"ticks_run": 300, "budget_left": 119400}
{"budget_left": 119200}
{"ticks_run": 1000, "budget_left": 118200}
{"ticks_run": 500, "budget_left": 117700}
{"ticks_run": 500, "budget_left": 117200}
{"ticks_run": 500, "budget_left": 116700}
{"ticks_run": 500, "budget_left": 116200}
{"ticks_run": 500, "budget_left": 115700}
{"budget_left": 115500}
{"ticks_run": 500, "budget_left": 115000}
{"budget_left": 114800}
{"ticks_run": 1000, "budget_left": 113800}
{"ticks_run": 2000, "budget_left": 111800}
{"ticks_run": 2000, "budget_left": 109800}
{"ticks_run": 2000, "budget_left": 107800}
{"budget_left": 107600}
{"ticks_run": 750, "budget_left": 106850}
{"budget_left": 106650}
{"ticks_run": 800, "budget_left": 105850}
{"budget_left": 105650}
{"ticks_run": 900, "budget_left": 104750}
{"budget_left": 104550}
{"ticks_run": 1100, "budget_left": 103450}
{"budget_left": 103250}
{"ticks_run": 1500, "budget_left": 101750}
{"budget_left": 101550}
{"ticks_run": 1300, "budget_left": 100250}
{"ticks_run": 1000, "budget_left": 99250}
{"budget_left": 99050}
{"ticks_run": 3000, "budget_left": 96050}
{"budget_left": 95850}
{"ticks_run": 3000, "budget_left": 92850}
{"budget_left": 92650}
{"ticks_run": 500, "budget_left": 92150}
{"ticks_run": 1500, "budget_left": 90650}
{"ticks_run": 500, "budget_left": 90150}
{"budget_left": 89950}
{"ticks_run": 500, "budget_left": 89450}
{"ticks_run": 1500, "budget_left": 87950}
{"ticks_run": 500, "budget_left": 87450}
{"budget_left": 87250}
{"ticks_run": 500, "budget_left": 86750}
{"ticks_run": 2000, "budget_left": 84750}
{"ticks_run": 2000, "budget_left": 82750}
{"ticks_run": 500, "budget_left": 82250}
{"budget_left": 82050}
{"ticks_run": 3000, "budget_left": 79050}
{"budget_left": 78850}
{"ticks_run": 500, "budget_left": 78350}
{"ticks_run": 20, "budget_left": 78330}
{"budget_left": 78130}
{"ticks_run": 2000, "budget_left": 76130}
{"budget_left": 75930}
{"ticks_run": 2000, "budget_left": 73930}
{"budget_left": 73730}
{"ticks_run": 2000, "budget_left": 71730}
{"budget_left": 71530}
{"ticks_run": 2000, "budget_left": 69530}
{"budget_left": 69330}
{"ticks_run": 2000, "budget_left": 67330}
{"budget_left": 67130}
{"ticks_run": 2000, "budget_left": 65130}
{"budget_left": 64930}
{"ticks_run": 2000, "budget_left": 62930}
{"budget_left": 62730}
{"ticks_run": 2000, "budget_left": 60730}
{"budget_left": 60530}
{"ticks_run": 2000, "budget_left": 58530}
{"budget_left": 58330}
{"ticks_run": 2000, "budget_left": 56330}
{"budget_left": 56130}
{"ticks_run": 2000, "budget_left": 54130}
{"budget_left": 53930}
{"ticks_run": 2000, "budget_left": 51930}
{"budget_left": 51730}
{"ticks_run": 2000, "budget_left": 49730}
{"budget_left": 49530}
{"ticks_run": 2000, "budget_left": 47530}
{"budget_left": 47330}
{"ticks_run": 500, "budget_left": 46830}
{"budget_left": 46630}
{"ticks_run": 500, "budget_left": 46130}
{"budget_left": 45930}
{"ticks_run": 500, "budget_left": 45430}
{"budget_left": 45230}
{"ticks_run": 500, "budget_left": 44730}
{"budget_left": 44530}
{"ticks_run": 500, "budget_left": 44030}
{"budget_left": 43830}
{"ticks_run": 2000, "budget_left": 41830}
{"budget_left": 41630}
{"ticks_run": 2000, "budget_left": 39630}
{"budget_left": 39430}
{"ticks_run": 2000, "budget_left": 37430}
{"budget_left": 37230}
{"ticks_run": 2000, "budget_left": 35230}
{"budget_left": 35030}
{"ticks_run": 2000, "budget_left": 33030}
{"budget_left": 32830}
{"ticks_run": 2000, "budget_left": 30830}
{"budget_left": 30630}
{"ticks_run": 2000, "budget_left": 28630}
{"budget_left": 28430}
{"ticks_run": 2000, "budget_left": 26430}
{"budget_left": 26230}
{"ticks_run": 2000, "budget_left": 24230}
{"budget_left": 24030}
{"ticks_run": 2000, "budget_left": 22030}
{"budget_left": 21830}
{"ticks_run": 2000, "budget_left": 19830}
{"phase": "answer"}
{"received": 16}
Submitted all 16 prediction-contract answers via `physim_answer`, and submitted preparation policies for contracts `100` and `101` via `physim_answer_prep`.

Local artifacts used:
- `physim/dataset.py:1` (experiment log)
- `physim/features.py:1` (protocol → feature vector)
- `physim/fit.py:1` (ridge fit + saved `physim/model.npz`)
- `physim/predict.py:1` (protocol prediction using saved model)

anthropic--claude-fable-5--claude_code — C1 (3 rollouts, mean acc 0.935)

anthropic/claude-fable-5 · C1 seed 2 · tier tools · accuracy 0.96 · preparation 0.80 · theory 0.96 · budget 19%

S1=0.98 · S2=0.98 · S3=0.96 · S4=0.93 · coverage 1.00 · 345 nodes

Narrative experiment log

timeline
  1. 2× free run (600 ticks; 200 ticks, all inputs 0).
  2. ✗ single-port probe rejected: series observation limited to <=6 channels.
  3. Single-port probe (150 ticks; port 0 at +0.06, 150t).
  4. 2× drive → release (800 ticks; drive +0.12 for 200t, release 200t).
  5. Free run (600 ticks; 600 ticks, all inputs 0).
  6. 8× drive → release (3,300 ticks; drive -0.12 for 200t, release 300t).
  7. 8× single-port probe (1,200 ticks; port 5 at +0.12, 150t).
  8. Drive → release (400 ticks; drive -0.12 for 200t, release 200t).
  9. Reset to fresh initial conditions (−200 ticks).
  10. Free run (100 ticks; 100 ticks, all inputs 0).
  11. 4× drive → release (1,300 ticks; drive +0.04 for 100t, release 150t).
  12. Free run (500 ticks; 500 ticks, all inputs 0).
  13. Multi-port probe (150 ticks; ports [4, 5, 6, 7] at +0.50, 150t).
  14. 17× drive → release (2,050 ticks; drive +0.12 for 50t, release 50t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Reset to fresh initial conditions (−200 ticks).
  17. Drive → release (230 ticks; drive -0.12 for 150t, release 80t).
  18. Reset to fresh initial conditions (−200 ticks).
  19. 3× drive → release (700 ticks; drive -0.06 for 100t, release 100t) — ch16 -0.54→+0.63, ch33 -0.54→+0.33, ch14 -0.33→+0.52.
  20. Reset to fresh initial conditions (−200 ticks).
  21. 3× drive → release (540 ticks; drive +0.06 for 260t, release 40t).
  22. Reset to fresh initial conditions (−200 ticks).
  23. 8× drive → release (2,410 ticks; drive -0.12 for 150t, release 100t).
  24. Reset to fresh initial conditions (−200 ticks).
  25. 5× drive → release (1,900 ticks; drive -0.09 for 380t, release 40t) — ch1 +0.27→-0.14, ch32 +0.21→-0.16.
  26. Single-port probe (500 ticks; port 1 at -0.09, 500t).
  27. Reset to fresh initial conditions (−200 ticks).
  28. 4× drive → release (1,240 ticks; drive -0.09 for 250t, release 60t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. 4× drive → release (1,530 ticks; drive -0.50 for 100t, release 50t) — ch16 -0.51→+0.66, ch33 -0.56→+0.34, ch1 +0.28→-0.53.
  31. Reset to fresh initial conditions (−200 ticks).
  32. 4× drive → release (1,840 ticks; drive -0.07 for 500t, release 60t).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Free run (120 ticks; 120 ticks, all inputs 0).
  35. 2× drive → release (750 ticks; drive -0.09 for 400t, release 60t) — ch13 +0.81→-0.16, ch35 -0.32→+0.55, ch14 -0.33→+0.52.
  36. Reset to fresh initial conditions (−200 ticks).
  37. 3× drive → release (460 ticks; drive -0.12 for 120t, release 60t) — ch13 +0.83→-0.18, ch35 -0.29→+0.57, ch2 -0.31→+0.46.
  38. Reset to fresh initial conditions (−200 ticks).
  39. Reset to fresh initial conditions (−200 ticks).
  40. 9× drive → release (1,650 ticks; drive +0.12 for 100t, release 50t).
  41. Reset to fresh initial conditions (−200 ticks).
  42. 6× drive → release (1,600 ticks; drive +0.12 for 50t, release 50t).
  43. Reset to fresh initial conditions (−200 ticks).
  44. 6× drive → release (910 ticks; drive -0.12 for 90t, release 30t) — ch16 -0.50→+0.63, ch33 -0.53→+0.34.
  45. Submitted an executable theory (5,143 chars).
  46. Submitted an executable theory (5,143 chars).
  47. Reset to fresh initial conditions (−200 ticks).
  48. 3× ramp sweep (1,220 ticks; 300 ticks, peak mean drive -0.06).
  49. Submitted an executable theory (5,263 chars).
  50. Ended exploration → received 0 prediction contracts.
  51. Ended exploration → received 0 prediction contracts.
  52. Submitted 16 contract answers.
  53. Submitted preparation policy for contract 100 (414 chars).
  54. Submitted preparation policy for contract 101 (413 chars).
  55. Submitted preparation policy for contract 101 (413 chars).
  56. Submitted preparation policy for contract 102 (413 chars).
  57. Submitted preparation policy for contract 103 (414 chars).
  58. Submitted preparation policy for contract 104 (1135 chars).

Agent-written files (its instruments & theories)

app/physim/MODEL.md (3,941 chars)
# PHYSIM system model (discovered by experiment)

## Architecture
8 inputs, 36 sensors, additive white noise sd≈0.05/tick on every sensor.
4 independent latent subsystems driven by ports 0-3. Ports 4-7 INERT (both signs, anywhere).
Sensors = fixed offsets + nonlinear readouts of one latent each. Sensor mapping:
- s0 (port0, "fuse"):  ch14, ch16, ch25, ch33
- s1 (port1, integrator): ch20
- s2 (port2, "fuse"):  ch0, ch1, ch13, ch32
- s3 (port3, "fuse"):  ch2, ch30, ch31, ch35 (+ch18 tiny +0.05 when fired)
- All other channels: constant (fresh-draw baseline), never moved in any condition.

## Fresh draw
Always starts at state A (armed fuses, s=0; ch20≈-0.01±0.02). Baselines repeatable ±0.02.

## Fuse ports (0, 2, 3) — one-way latent s∈[0(A)..1(fired/floor)]
- Rest: ANY s is stable at u=0 (continuum, no decay over ≥600 ticks).
- Strong NEGATIVE u ≤ -0.85: fires immediately; transit to floor takes ~40-55 ticks (sigmoid path, see transit series). Min -1 pulse to latch: ~8-10 ticks (6 returns, 10 fires); once past ~1/4 of transit, completes autonomously after release.
- u in [-0.8,-0.7]: relaxation oscillations period ≈45-50 ticks, amplitude large (e.g. ch16 swings -0.65..+0.05); fires stochastically ~p≈0.3-0.4 per cycle (mean latency 100-350 ticks).
- u ≈ -0.6: sustained oscillation, no fire ≤500 ticks; during-drive mean e.g. ch16 ≈ -0.35 (A=-0.50); small permanent s advance (~0.05-0.1 of path).
- u in [-0.5,-0.2]: single damped excursion at onset (peak ~half-way to fired values, decays in ~40 ticks), settles to small during-drive shift; fully returns to A on release.
- POSITIVE u: elastic during-drive shift (relaxes τ≈15 on release) + slow creep of s toward 1:
  port0 λ(u): 0.7→~0.0001, 0.8→0.0008, 1.0→0.0030 /tick (exp approach in ch16-space)
  port2: initial rate ~0.0014/tick@u=1 (accelerates late, see staircase); scales ≈u²  (0.5→~0.0004)
  port3: similar; traverses non-monotone path (ch30/31 rise then fall)
- Elastic during-drive shifts at s=0 (scale ~linearly with u, sd noted):
  port0 u=+0.5: ch16 -0.08, ch33 -0.10, ch25 +0.12, ch14 -0.05
  port0 u=-0.25..-0.5: transient excursions instead (see above)
  port2 u=+1: ch1 +0.15 early bump; port3 u=+1: ch30 +0.10, ch31 +0.06
- Fired floor is ABSORBING: no response to any port-0..3 input afterwards (elastic also dead).

## Port 1 — bounded integrator (no threshold, no elastic)
d(ch20)/dt = -0.0042*u1 (linear in u), bounds ch20∈[-0.37..-0.30(soft floor), +0.21±0.02 ceiling].
Holds position at rest indefinitely. Fresh ch20≈-0.01.

## Rest-state readout tables (see staircase_port0.csv)
s0 path (T=+1-equiv ticks, λ=0.003 ⇒ s=1-exp(-0.003T)):
  A(T=0):    14:-0.35 16:-0.50 25:-0.14 33:-0.56
  T=205:     14:-0.15 16:-0.05 25:-0.01 33:-0.40
  T=405:     14:+0.10 16:+0.24 25:-0.10 33:-0.11
  T=705:     14:+0.34 16:+0.52 25:-0.28 33:+0.14
  fired:     14:+0.51 16:+0.65 25:-0.54 33:+0.35
s2 path (T units of +1 ticks; ch0 & ch13 lag ch1/ch32):
  A: 0:+0.08 1:+0.28 13:+0.81 32:+0.18 ... fired: 0:-0.53 1:-0.55 13:-0.18 32:-0.39
s3 path: A: 2:-0.31 30:+0.14 31:+0.25 35:-0.31; mid(+650): 2:+0.18 30:-0.14 31:+0.25 35:+0.23
  (ch30 peaks +0.35 & ch31 +0.42 around T~350-400) ... fired: 2:+0.455 30:-0.61 31:-0.11 35:+0.57
  ch18: A:+0.21, fired:+0.25

## Baseline A (all 36, mean of many draws)
0:0.08 1:0.28 2:-0.31 3:-0.47 4:0.22 5:-0.23 6:-0.12 7:0.06 8:-0.31 9:-0.645 10:0.02
11:-0.707 12:-0.334 13:0.815 14:-0.35 15:0.185 16:-0.50 17:-0.452 18:0.21 19:-0.740
20:-0.01 21:0.735 22:-0.53 23:-0.472 24:-0.535 25:-0.14 26:0.126 27:0.485 28:-0.594
29:0.483 30:0.135 31:0.245 32:0.17 33:-0.56 34:-0.716 35:-0.315

## Transits (fire trajectories, ticks from fire onset under -1; free transit ~1.3x slower)
port0 ch16: -0.5,-0.65(dip,t~10),-0.3(t~20),+0.1(t~28),+0.5(t~38),0.65(t>45)
port2 ch1: 0.28(0),0.1(t~15),-0.25(t~28),-0.5(t~40); ch13 lags ~5 ticks; ch0 similar
port3 ch30: 0.15(0),0.05(t~18),-0.35(t~27),-0.6(t~38); ch2/ch35 rise sigmoid center t~25
app/physim/log.md (629 chars)
# Physim exploration log
- 8 inputs, 36 sensors, noise sd ~0.05 per tick, tail = last 20 ticks
- Baseline A (initial draw, u=0): ch0..35 =
  0.077,0.278,-0.306,-0.462,0.215,-0.223,-0.115,0.057,-0.302,-0.642,0.017,-0.708,-0.340,0.822,-0.333,0.170,-0.483,-0.449,0.201,-0.740,-0.008,0.731,-0.527,-0.472,-0.542,-0.156,0.126,0.486,-0.595,0.492,0.153,0.239,0.169,-0.552,-0.709,-0.327
- u0=+0.5 x150: ch14 -0.43, ch16 -0.59, ch25 -0.03, ch33 -0.67 (shift while driven)
- u0=+1.0 x200 then 0: state SWITCHED to new attractor B:
  ch14 -0.25, ch16 -0.21, ch25 +0.02, ch33 -0.50 (stable over 600 ticks)
- => multistability / branch memory
app/.vf-claude/73c9e1b148d44291bac02325491ba400/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T14:08:38.564Z",
  "machineID": "ccb73738dbf98f81ffcfdb8d1f0749ac7901dc104e3d2c6baa1919d0038899d2",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "dae828c7ad6542ef8544c062254d383825a3680c33096999599eb013cb0cb160"
}
app/physim/staircase_port0.csv (1,197 chars)
# Port0 staircase: rest-state tail means after cumulative +1 drive (50-tick steps unless noted)
# T_cum = ticks of u0=+1 since ~A (after initial 0.8x200 which ~= 55 equiv ticks); columns: T,ch14,ch16,ch25,ch33
0,-0.355,-0.495,-0.143,-0.563
55,-0.352,-0.330,-0.027,-0.601
105,-0.280,-0.235,-0.029,-0.501
155,-0.220,-0.156,-0.010,-0.451
205,-0.154,-0.051,-0.009,-0.405
255,-0.093,0.038,-0.017,-0.321
305,-0.025,0.101,-0.043,-0.252
355,0.016,0.179,-0.075,-0.183
405,0.096,0.242,-0.098,-0.114
455,0.143,0.336,-0.139,-0.058
505,0.217,0.358,-0.173,-0.017
555,0.227,0.411,-0.208,0.047
605,0.273,0.441,-0.236,0.074
655,0.313,0.492,-0.257,0.107
705,0.343,0.516,-0.278,0.135
805,0.385,0.526,-0.315,0.171
905,0.390,0.576,-0.350,0.191
1205,0.453,0.620,-0.397,0.290
99999,0.51,0.65,-0.55,0.35

# Port2 staircase: T_cum(+1 ticks),ch0,ch1,ch13,ch32  (rest tails; fresh draw start)
0,0.075,0.28,0.81,0.18
100,0.076,0.171,0.745,0.065
200,0.060,0.032,0.692,-0.048
300,0.026,-0.105,0.590,-0.160
400,-0.092,-0.220,0.392,-0.246
500,-0.160,-0.334,0.291,-0.329
600,-0.246,-0.402,0.168,-0.346
700,-0.293,-0.457,0.093,-0.375
900,-0.401,-0.494,-0.036,-0.369
1200,-0.463,-0.522,-0.097,-0.394
99999,-0.53,-0.545,-0.175,-0.39
app/physim/theory.py (5,932 chars)
import math

BASE = [0.08,0.28,-0.31,-0.47,0.22,-0.23,-0.12,0.06,-0.31,-0.645,0.02,
        -0.707,-0.334,0.815,-0.35,0.185,-0.50,-0.452,0.21,-0.740,
        -0.01,0.735,-0.53,-0.472,-0.535,-0.14,0.126,0.485,-0.594,
        0.483,0.135,0.245,0.17,-0.56,-0.716,-0.315]

# fuse port -> {channel: (A_value, fired_value)}
FUSE = {
  0: {14:(-0.35,0.51), 16:(-0.50,0.65), 25:(-0.14,-0.54), 33:(-0.56,0.35)},
  2: {0:(0.08,-0.53), 1:(0.28,-0.55), 13:(0.815,-0.18), 32:(0.17,-0.39)},
  3: {2:(-0.31,0.455), 30:(0.135,-0.61), 31:(0.245,-0.11), 35:(-0.315,0.57), 18:(0.21,0.25)},
}
# rest-path tables: progress q in [0,1] measured in T-equiv (+1 ticks), per channel piecewise
# port0: T pts and channel values
P0_T = [0,105,205,305,405,505,605,705,905,1205,3000]
P0 = {
 14:[-0.35,-0.28,-0.15,-0.03,0.10,0.22,0.27,0.34,0.39,0.45,0.51],
 16:[-0.50,-0.235,-0.05,0.10,0.24,0.36,0.44,0.52,0.58,0.62,0.65],
 25:[-0.14,-0.03,-0.01,-0.04,-0.10,-0.17,-0.24,-0.28,-0.35,-0.40,-0.54],
 33:[-0.56,-0.50,-0.40,-0.25,-0.11,-0.02,0.07,0.14,0.19,0.29,0.35],
}
P2_T = [0,100,200,300,400,500,600,700,900,1200,3000]
P2 = {
 0:[0.08,0.076,0.060,0.026,-0.092,-0.160,-0.246,-0.293,-0.401,-0.463,-0.53],
 1:[0.28,0.171,0.032,-0.105,-0.220,-0.334,-0.402,-0.457,-0.494,-0.522,-0.55],
 13:[0.815,0.745,0.692,0.590,0.392,0.291,0.168,0.093,-0.036,-0.097,-0.18],
 32:[0.17,0.065,-0.048,-0.160,-0.246,-0.329,-0.346,-0.375,-0.369,-0.394,-0.39],
}
P3_T = [0,50,150,350,650,950,1350,3000]
P3 = {
 2:[-0.31,-0.26,-0.24,-0.15,0.18,0.34,0.40,0.455],
 30:[0.135,0.13,0.15,0.13,-0.14,-0.36,-0.47,-0.61],
 31:[0.245,0.25,0.31,0.37,0.25,0.11,0.02,-0.11],
 35:[-0.315,-0.26,-0.27,-0.15,0.23,0.42,0.53,0.57],
 18:[0.21,0.21,0.21,0.22,0.23,0.24,0.245,0.25],
}
TABLES = {0:(P0_T,P0), 2:(P2_T,P2), 3:(P3_T,P3)}

# transit shapes: fraction of (A->fired) gap vs ticks since fire onset (sigmoid)
def transit_frac(tau, dur):
    # dur ~ 40 under drive; sigmoid centered mid
    x = (tau - dur*0.55)/(dur*0.16)
    return 1.0/(1.0+math.exp(-x))

def interp(T, xs, ys):
    if T<=xs[0]: return ys[0]
    for i in range(1,len(xs)):
        if T<=xs[i]:
            w=(T-xs[i-1])/(xs[i]-xs[i-1]); return ys[i-1]*(1-w)+ys[i]*w
    return ys[-1]

def creep_rate(p,u):
    if u<0.65: 
        if p==0: return 0.0
        return 1.0*u*u if p!=0 else 0.0
    if p==0:
        # port0 thresholded: T-equiv ticks per tick
        if u<0.72: return 0.03
        if u<0.82: return 0.27  # 0.0008/0.003
        return (u-0.82)/0.18*(1.0-0.35)+0.35 if u<1 else 1.0
    return u*u  # ports 2,3 approx quadratic scaling of table-T per tick

# per-cycle osc params
OSC_PER = 48.0
def fire_latency(u):
    au=abs(u)
    if au>=0.85: return 0
    if au>=0.80: return 60
    if au>=0.75: return 140
    if au>=0.72: return 200
    if au>=0.68: return 260
    return 10**9

def elastic_target(p,u,q):
    # during-drive additive shifts (vanish as q->1), linear in u for u>0
    e={}
    if p==0 and u>0:
        e={14:-0.10*u,16:-0.16*u,25:0.24*u,33:-0.20*u}
    elif p==0 and u<0:
        e={14:0.10*u,16:0.10*u,25:-0.05*u,33:0.10*u}
    elif p==2 and u>0:
        e={1:0.15*u,32:0.05*u}
    elif p==3 and u>0:
        e={30:0.10*u,31:0.06*u}
    return e

def init(y_history):
    st={'t':0,'ch20':-0.01,
        'fuse':{p:{'T':0.0,'fired':False,'transit':-1.0,'oscT':0.0,'phase':0.0} for p in (0,2,3)},
        'el':{p:{} for p in (0,2,3)}}
    try:
        if y_history and len(y_history)>0:
            n=min(len(y_history),20)
            s=0.0
            for row in y_history[-n:]: s+=row[20]
            st['ch20']=s/n
    except Exception: pass
    return st

def step(state,a):
    st=state
    st['t']+=1
    u1 = a[1] if len(a)>1 else 0.0
    st['ch20'] = min(0.21, max(-0.37, st['ch20'] - 0.0042*u1))
    y=[b for b in BASE]
    y[20]=st['ch20']
    for p in (0,2,3):
        u = a[p] if len(a)>p else 0.0
        f=st['fuse'][p]; el=st['el'][p]
        chans=TABLES[p][1]; Ts=TABLES[p][0]
        if f['fired']:
            if f['transit']>=0:
                f['transit']+=1.0
                dur=45.0
                fr=transit_frac(f['transit'],dur)
                if f['transit']>dur*1.6: f['transit']=-1.0
                for c in chans:
                    A,_=None,None
                    rest0=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                    y[c]=rest0*(1-fr)+fired*fr
            else:
                for c in chans: y[c]=chans[c][-1]
            continue
        # not fired
        if u<=-0.85 or (u<=-0.67 and f['oscT']>=fire_latency(u)):
            f['fired']=True; f['transit']=0.0
            for c in chans: y[c]=interp(f['T'],Ts,chans[c])
            continue
        if u<=-0.55:
            # oscillating regime: mean elevated toward mid-path
            f['oscT']+=1.0
            f['phase']+=2*math.pi/OSC_PER
            for c in chans:
                rest=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                amp=(fired-rest)*0.30*min(1.0,(abs(u)-0.45)/0.3)
                mean=rest+(fired-rest)*0.15
                y[c]=mean+amp*math.sin(f['phase'])
            # slow advance
            f['T']+=0.06
            continue
        f['oscT']=0.0
        if u<=-0.15:
            # damped excursion at onset then small shift; approximate steady small shift
            for c in chans:
                rest=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                y[c]=rest+(fired-rest)*0.05*abs(u)/0.5
            continue
        if u>=0.15:
            f['T']+=creep_rate(p,u)
            et=elastic_target(p,u,0.0)
            for c in chans:
                cur=el.get(c,0.0); tgt=et.get(c,0.0)
                el[c]=cur+(tgt-cur)/15.0
            for c in chans:
                y[c]=interp(f['T'],Ts,chans[c])+el.get(c,0.0)
            continue
        # u ~ 0: relax elastic
        for c in list(el.keys()): el[c]*=(1-1/15.0)
        for c in chans:
            y[c]=interp(f['T'],Ts,chans[c])+el.get(c,0.0)
    return st,y
app/physim/theory_final.py (6,139 chars)
BASE = [0.08,0.28,-0.31,-0.47,0.22,-0.23,-0.12,0.06,-0.31,-0.645,0.02,
        -0.707,-0.334,0.815,-0.35,0.185,-0.50,-0.452,0.21,-0.740,
        -0.01,0.735,-0.53,-0.472,-0.535,-0.14,0.126,0.485,-0.594,
        0.483,0.135,0.245,0.17,-0.56,-0.716,-0.315]

# fuse port -> {channel: (A_value, fired_value)}
FUSE = {
  0: {14:(-0.35,0.51), 16:(-0.50,0.65), 25:(-0.14,-0.54), 33:(-0.56,0.35)},
  2: {0:(0.08,-0.53), 1:(0.28,-0.55), 13:(0.815,-0.18), 32:(0.17,-0.39)},
  3: {2:(-0.31,0.455), 30:(0.135,-0.61), 31:(0.245,-0.11), 35:(-0.315,0.57), 18:(0.21,0.25)},
}
# rest-path tables: progress q in [0,1] measured in T-equiv (+1 ticks), per channel piecewise
# port0: T pts and channel values
P0_T = [0,105,205,305,405,505,605,705,905,1205,3000]
P0 = {
 14:[-0.35,-0.28,-0.15,-0.03,0.10,0.22,0.27,0.34,0.39,0.45,0.51],
 16:[-0.50,-0.235,-0.05,0.10,0.24,0.36,0.44,0.52,0.58,0.62,0.65],
 25:[-0.14,-0.03,-0.01,-0.04,-0.10,-0.17,-0.24,-0.28,-0.35,-0.40,-0.54],
 33:[-0.56,-0.50,-0.40,-0.25,-0.11,-0.02,0.07,0.14,0.19,0.29,0.35],
}
P2_T = [0,100,200,300,400,500,600,700,900,1200,3000]
P2 = {
 0:[0.08,0.076,0.060,0.026,-0.092,-0.160,-0.246,-0.293,-0.401,-0.463,-0.53],
 1:[0.28,0.171,0.032,-0.105,-0.220,-0.334,-0.402,-0.457,-0.494,-0.522,-0.55],
 13:[0.815,0.745,0.692,0.590,0.392,0.291,0.168,0.093,-0.036,-0.097,-0.18],
 32:[0.17,0.065,-0.048,-0.160,-0.246,-0.329,-0.346,-0.375,-0.369,-0.394,-0.39],
}
P3_T = [0,50,150,350,650,950,1350,3000]
P3 = {
 2:[-0.31,-0.26,-0.24,-0.15,0.18,0.34,0.40,0.455],
 30:[0.135,0.13,0.15,0.13,-0.14,-0.36,-0.47,-0.61],
 31:[0.245,0.25,0.31,0.37,0.25,0.11,0.02,-0.11],
 35:[-0.315,-0.26,-0.27,-0.15,0.23,0.42,0.53,0.57],
 18:[0.21,0.21,0.21,0.22,0.23,0.24,0.245,0.25],
}
TABLES = {0:(P0_T,P0), 2:(P2_T,P2), 3:(P3_T,P3)}

# transit shapes: fraction of (A->fired) gap vs ticks since fire onset (sigmoid)
def transit_frac(tau, dur):
    # dur ~ 40 under drive; sigmoid centered mid
    x = (tau - dur*0.55)/(dur*0.16)
    return 1.0/(1.0+math.exp(-x))

def interp(T, xs, ys):
    if T<=xs[0]: return ys[0]
    for i in range(1,len(xs)):
        if T<=xs[i]:
            w=(T-xs[i-1])/(xs[i]-xs[i-1]); return ys[i-1]*(1-w)+ys[i]*w
    return ys[-1]

def creep_rate(p,u):
    # T-table-units advanced per tick under continuous positive drive u
    if p==0:
        if u<0.68: return 0.0
        if u<0.76: return 0.02+(u-0.68)/0.08*0.10
        if u<0.85: return 0.12+(u-0.76)/0.09*0.16
        return 0.28+(min(u,1.0)-0.85)/0.15*0.32
    if u<0.2: return 0.0
    return 0.8*(u**1.6)  # ports 2,3

# per-cycle osc params
OSC_PER = 48.0
def fire_latency(u):
    au=abs(u)
    if au>=0.95: return 8
    if au>=0.85: return 18
    if au>=0.80: return 60
    if au>=0.75: return 140
    if au>=0.72: return 200
    if au>=0.68: return 260
    return 10**9

def elastic_target(p,u,q):
    # during-drive additive shifts (vanish as q->1), linear in u for u>0
    e={}
    if p==0 and u>0:
        e={14:-0.10*u,16:-0.16*u,25:0.24*u,33:-0.20*u}
    elif p==0 and u<0:
        e={14:0.10*u,16:0.10*u,25:-0.05*u,33:0.10*u}
    elif p==2 and u>0:
        e={1:0.15*u,32:0.05*u}
    elif p==3 and u>0:
        e={30:0.10*u,31:0.06*u}
    return e

def init(y_history):
    st={'t':0,'ch20':-0.01,
        'fuse':{p:{'T':0.0,'fired':False,'transit':-1.0,'oscT':0.0,'phase':0.0,'uslow':0.0,'cycling':False} for p in (0,2,3)},
        'el':{p:{} for p in (0,2,3)}}
    try:
        if y_history and len(y_history)>0:
            n=min(len(y_history),20)
            s=0.0
            for row in y_history[-n:]: s+=row[20]
            st['ch20']=s/n
    except Exception: pass
    return st

def step(state,a):
    st=state
    st['t']+=1
    u1 = a[1] if len(a)>1 else 0.0
    st['ch20'] = min(0.21, max(-0.37, st['ch20'] - 0.0042*u1))
    y=[b for b in BASE]
    y[20]=st['ch20']
    for p in (0,2,3):
        u = a[p] if len(a)>p else 0.0
        f=st['fuse'][p]; el=st['el'][p]
        chans=TABLES[p][1]; Ts=TABLES[p][0]
        if f['fired']:
            if f['transit']>=0:
                f['transit']+=1.0
                dur=45.0
                fr=transit_frac(f['transit'],dur)
                if f['transit']>dur*1.6: f['transit']=-1.0
                for c in chans:
                    A,_=None,None
                    rest0=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                    y[c]=rest0*(1-fr)+fired*fr
            else:
                for c in chans: y[c]=chans[c][-1]
            continue
        # not fired: accommodation — uslow tracks u (tau=25); shock = uslow - u
        us = f.get('uslow',0.0)
        shock = us - u
        f['uslow'] = us + (u-us)/25.0
        if u < -0.15:
            if shock >= 0.55 and u <= -0.55:
                f['cycling']=True
            if f.get('cycling') and u <= -0.55:
                f['oscT']=f.get('oscT',0.0)+1.0
                if f['oscT']>=fire_latency(u):
                    f['fired']=True; f['transit']=0.0
                    for c in chans: y[c]=interp(f['T'],Ts,chans[c])
                    continue
                f['phase']+=2*math.pi/OSC_PER
                for c in chans:
                    rest=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                    amp=(fired-rest)*0.30*min(1.0,(abs(u)-0.45)/0.3)
                    mean=rest+(fired-rest)*0.15
                    y[c]=mean+amp*math.sin(f['phase'])
                f['T']+=0.06
                continue
            f['cycling']=False; f['oscT']=0.0
            for c in chans:
                rest=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                y[c]=rest+(fired-rest)*0.22*abs(u)
            continue
        f['cycling']=False; f['oscT']=0.0
        if u>=0.15:
            f['T']+=creep_rate(p,u)
            et=elastic_target(p,u,0.0)
            for c in chans:
                cur=el.get(c,0.0); tgt=et.get(c,0.0)
                el[c]=cur+(tgt-cur)/15.0
            for c in chans:
                y[c]=interp(f['T'],Ts,chans[c])+el.get(c,0.0)
            continue
        # u ~ 0: relax elastic
        for c in list(el.keys()): el[c]*=(1-1/15.0)
        for c in chans:
            y[c]=interp(f['T'],Ts,chans[c])+el.get(c,0.0)
    return st,y
app/physim/theory_local.py (6,151 chars)
import math

BASE = [0.08,0.28,-0.31,-0.47,0.22,-0.23,-0.12,0.06,-0.31,-0.645,0.02,
        -0.707,-0.334,0.815,-0.35,0.185,-0.50,-0.452,0.21,-0.740,
        -0.01,0.735,-0.53,-0.472,-0.535,-0.14,0.126,0.485,-0.594,
        0.483,0.135,0.245,0.17,-0.56,-0.716,-0.315]

# fuse port -> {channel: (A_value, fired_value)}
FUSE = {
  0: {14:(-0.35,0.51), 16:(-0.50,0.65), 25:(-0.14,-0.54), 33:(-0.56,0.35)},
  2: {0:(0.08,-0.53), 1:(0.28,-0.55), 13:(0.815,-0.18), 32:(0.17,-0.39)},
  3: {2:(-0.31,0.455), 30:(0.135,-0.61), 31:(0.245,-0.11), 35:(-0.315,0.57), 18:(0.21,0.25)},
}
# rest-path tables: progress q in [0,1] measured in T-equiv (+1 ticks), per channel piecewise
# port0: T pts and channel values
P0_T = [0,105,205,305,405,505,605,705,905,1205,3000]
P0 = {
 14:[-0.35,-0.28,-0.15,-0.03,0.10,0.22,0.27,0.34,0.39,0.45,0.51],
 16:[-0.50,-0.235,-0.05,0.10,0.24,0.36,0.44,0.52,0.58,0.62,0.65],
 25:[-0.14,-0.03,-0.01,-0.04,-0.10,-0.17,-0.24,-0.28,-0.35,-0.40,-0.54],
 33:[-0.56,-0.50,-0.40,-0.25,-0.11,-0.02,0.07,0.14,0.19,0.29,0.35],
}
P2_T = [0,100,200,300,400,500,600,700,900,1200,3000]
P2 = {
 0:[0.08,0.076,0.060,0.026,-0.092,-0.160,-0.246,-0.293,-0.401,-0.463,-0.53],
 1:[0.28,0.171,0.032,-0.105,-0.220,-0.334,-0.402,-0.457,-0.494,-0.522,-0.55],
 13:[0.815,0.745,0.692,0.590,0.392,0.291,0.168,0.093,-0.036,-0.097,-0.18],
 32:[0.17,0.065,-0.048,-0.160,-0.246,-0.329,-0.346,-0.375,-0.369,-0.394,-0.39],
}
P3_T = [0,50,150,350,650,950,1350,3000]
P3 = {
 2:[-0.31,-0.26,-0.24,-0.15,0.18,0.34,0.40,0.455],
 30:[0.135,0.13,0.15,0.13,-0.14,-0.36,-0.47,-0.61],
 31:[0.245,0.25,0.31,0.37,0.25,0.11,0.02,-0.11],
 35:[-0.315,-0.26,-0.27,-0.15,0.23,0.42,0.53,0.57],
 18:[0.21,0.21,0.21,0.22,0.23,0.24,0.245,0.25],
}
TABLES = {0:(P0_T,P0), 2:(P2_T,P2), 3:(P3_T,P3)}

# transit shapes: fraction of (A->fired) gap vs ticks since fire onset (sigmoid)
def transit_frac(tau, dur):
    # dur ~ 40 under drive; sigmoid centered mid
    x = (tau - dur*0.55)/(dur*0.16)
    return 1.0/(1.0+math.exp(-x))

def interp(T, xs, ys):
    if T<=xs[0]: return ys[0]
    for i in range(1,len(xs)):
        if T<=xs[i]:
            w=(T-xs[i-1])/(xs[i]-xs[i-1]); return ys[i-1]*(1-w)+ys[i]*w
    return ys[-1]

def creep_rate(p,u):
    # T-table-units advanced per tick under continuous positive drive u
    if p==0:
        if u<0.68: return 0.0
        if u<0.76: return 0.02+(u-0.68)/0.08*0.10
        if u<0.85: return 0.12+(u-0.76)/0.09*0.16
        return 0.28+(min(u,1.0)-0.85)/0.15*0.32
    if u<0.2: return 0.0
    return 0.8*(u**1.6)  # ports 2,3

# per-cycle osc params
OSC_PER = 48.0
def fire_latency(u):
    au=abs(u)
    if au>=0.95: return 8
    if au>=0.85: return 18
    if au>=0.80: return 60
    if au>=0.75: return 140
    if au>=0.72: return 200
    if au>=0.68: return 260
    return 10**9

def elastic_target(p,u,q):
    # during-drive additive shifts (vanish as q->1), linear in u for u>0
    e={}
    if p==0 and u>0:
        e={14:-0.10*u,16:-0.16*u,25:0.24*u,33:-0.20*u}
    elif p==0 and u<0:
        e={14:0.10*u,16:0.10*u,25:-0.05*u,33:0.10*u}
    elif p==2 and u>0:
        e={1:0.15*u,32:0.05*u}
    elif p==3 and u>0:
        e={30:0.10*u,31:0.06*u}
    return e

def init(y_history):
    st={'t':0,'ch20':-0.01,
        'fuse':{p:{'T':0.0,'fired':False,'transit':-1.0,'oscT':0.0,'phase':0.0,'uslow':0.0,'cycling':False} for p in (0,2,3)},
        'el':{p:{} for p in (0,2,3)}}
    try:
        if y_history and len(y_history)>0:
            n=min(len(y_history),20)
            s=0.0
            for row in y_history[-n:]: s+=row[20]
            st['ch20']=s/n
    except Exception: pass
    return st

def step(state,a):
    st=state
    st['t']+=1
    u1 = a[1] if len(a)>1 else 0.0
    st['ch20'] = min(0.21, max(-0.37, st['ch20'] - 0.0042*u1))
    y=[b for b in BASE]
    y[20]=st['ch20']
    for p in (0,2,3):
        u = a[p] if len(a)>p else 0.0
        f=st['fuse'][p]; el=st['el'][p]
        chans=TABLES[p][1]; Ts=TABLES[p][0]
        if f['fired']:
            if f['transit']>=0:
                f['transit']+=1.0
                dur=45.0
                fr=transit_frac(f['transit'],dur)
                if f['transit']>dur*1.6: f['transit']=-1.0
                for c in chans:
                    A,_=None,None
                    rest0=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                    y[c]=rest0*(1-fr)+fired*fr
            else:
                for c in chans: y[c]=chans[c][-1]
            continue
        # not fired: accommodation — uslow tracks u (tau=25); shock = uslow - u
        us = f.get('uslow',0.0)
        shock = us - u
        f['uslow'] = us + (u-us)/25.0
        if u < -0.15:
            if shock >= 0.55 and u <= -0.55:
                f['cycling']=True
            if f.get('cycling') and u <= -0.55:
                f['oscT']=f.get('oscT',0.0)+1.0
                if f['oscT']>=fire_latency(u):
                    f['fired']=True; f['transit']=0.0
                    for c in chans: y[c]=interp(f['T'],Ts,chans[c])
                    continue
                f['phase']+=2*math.pi/OSC_PER
                for c in chans:
                    rest=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                    amp=(fired-rest)*0.30*min(1.0,(abs(u)-0.45)/0.3)
                    mean=rest+(fired-rest)*0.15
                    y[c]=mean+amp*math.sin(f['phase'])
                f['T']+=0.06
                continue
            f['cycling']=False; f['oscT']=0.0
            for c in chans:
                rest=interp(f['T'],Ts,chans[c]); fired=chans[c][-1]
                y[c]=rest+(fired-rest)*0.22*abs(u)
            continue
        f['cycling']=False; f['oscT']=0.0
        if u>=0.15:
            f['T']+=creep_rate(p,u)
            et=elastic_target(p,u,0.0)
            for c in chans:
                cur=el.get(c,0.0); tgt=et.get(c,0.0)
                el[c]=cur+(tgt-cur)/15.0
            for c in chans:
                y[c]=interp(f['T'],Ts,chans[c])+el.get(c,0.0)
            continue
        # u ~ 0: relax elastic
        for c in list(el.keys()): el[c]*=(1-1/15.0)
        for c in chans:
            y[c]=interp(f['T'],Ts,chans[c])+el.get(c,0.0)
    return st,y

Preparation contracts

idchannelbandsuccessreleased finals
10016[+0.35, +0.94]100%+0.66, +0.65, +0.66, +0.65
10113[-0.42, +0.08]100%-0.17, -0.18, -0.18, -0.16
10233[+0.09, +0.61]100%+0.34, +0.34, +0.34, +0.34
10335[+0.28, +0.88]100%+0.59, +0.58, +0.57, +0.57
10423[+0.07, +0.57]0%-0.48, -0.45, -0.46

Executable theory

accuracy 0.955 · per-stratum {'S1': 0.98, 'S2': 0.97, 'S3': 0.95, 'S4': 0.92} · 5,263 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.1950.2320.00.960
1S1+0.2790.1820.00.995
2S1+0.8200.2080.00.995
3S1-0.5310.2460.00.977
4S2-0.2990.1740.00.965
5S2+0.4920.3050.00.972
6S2-0.7160.2930.00.987
7S2-0.3240.2530.00.984
8S3-0.1820.2530.10.931
9S3-0.1310.1820.00.962
10S3+0.1920.2320.00.972
11S3-0.7090.2570.00.993
12S4-0.1680.2080.00.964
13S4+0.2760.1820.00.978
14S4-0.3040.1740.00.993
15S4-0.3430.2080.30.774
Verbatim log (275 entries)
physim.status({})
physim.status({})
{"budget_left": 150000, "phase": "explore"}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start by observing the system at rest, then probe each input port.
{"ticks_run": 200, "budget_left": 149800}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 149400}
physim.run({"segments": [{"t": 150, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all", "series": true})
{"error": "series observation limited to <=6 channels"}
physim.run({"segments": [{"t": 150, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 149100}
physim.run({"segments": [{"t": 200, "u": [1.0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 9, 11], "series": true, "max_numbers": 360})
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 9, 11], "series": true, "max_numbers": 360})
{"ticks_run": 400, "budget_left": 148700}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 9, 11], "series": true, "max_numbers": 360})
{"ticks_run": 600, "budget_left": 148100}
physim.run({"segments": [{"t": 200, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 147600}
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 3, 28], "series": true})
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 3, 28], "series": true})
{"ticks_run": 400, "budget_left": 147200}
physim.run({"segments": [{"t": 600, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 9, 19], "series": true})
{"ticks_run": 800, "budget_left": 146400}
physim.run({"segments": [{"t": 150, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 146100}
physim.run({"segments": [{"t": 150, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 1 moved only ch20 (0.00 → -0.37, persistent). Port 2 next.
{"ticks_run": 300, "budget_left": 145800}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 145500}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 1, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 145200}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 145050}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144900}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144750}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, -1, 0, 0, 0]}], "channels": "all"})
Ports 5–7 do nothing at +1 from this state. Testing negative inputs on ports 4–7 (drive then release each).
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, -1, 0, 0, 0]}], "channels": "all"})
Ports 5–7 do nothing at +1 from this state. Testing negative inputs on ports 4–7 (drive then release each).
{"ticks_run": 150, "budget_left": 144600}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, -1, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144450}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144300}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, -1]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144150}
physim.run({"segments": [{"t": 200, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 1], "series": true})
{"ticks_run": 400, "budget_left": 143750}
physim.reset({})
{"budget_left": 143550}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 143450}
physim.run({"segments": [{"t": 100, "u": [0.3, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 32], "series": true})
{"ticks_run": 250, "budget_left": 143200}
physim.run({"segments": [{"t": 100, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 32], "series": true})
{"ticks_run": 250, "budget_left": 142950}
physim.run({"segments": [{"t": 200, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 32], "series": true})
physim.run({"segments": [{"t": 200, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 32], "series": true})
{"ticks_run": 400, "budget_left": 142550}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 32], "series": true})
{"ticks_run": 500, "budget_left": 142050}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 1, 1, 1, 1]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 141900}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141800}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141700}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141600}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141500}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141400}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141300}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141200}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141100}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 141000}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 140900}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 140800}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 140700}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 140600}
physim.run({"segments": [{"t": 50, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 140500}
physim.run({"segments": [{"t": 100, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 140350}
physim.run({"segments": [{"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 139950}
Near terminal now. Let me save the staircase data, then reset and measure flow rates at different amplitudes (including negative) from fresh baselines.
physim.reset({})
physim.reset({})
{"budget_left": 139750}
physim.run({"segments": [{"t": 150, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 1], "series": true})
{"ticks_run": 230, "budget_left": 139520}
physim.reset({})
{"budget_left": 139320}
physim.run({"segments": [{"t": 100, "u": [-0.5, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 1], "series": true})
{"ticks_run": 200, "budget_left": 139120}
physim.run({"segments": [{"t": 100, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 1], "series": true})
{"ticks_run": 200, "budget_left": 138920}
physim.run({"segments": [{"t": 200, "u": [-0.85, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33, 20, 1], "series": true})
−0.7 sustained gives repetitive excursions (period ≈ 50 ticks) that stop on release — excitable/oscillatory regime. Mapping the boundary: −0.85 next.
{"ticks_run": 300, "budget_left": 138620}
physim.reset({})
−0.85 latches to C in ~55 ticks. The latch threshold is between −0.7 and −0.85. Now: reset and measure sub-threshold elastic responses (both signs) from A.
{"budget_left": 138420}
physim.run({"segments": [{"t": 60, "u": [0.25, 0, 0, 0, 0, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u")
{"ticks_run": 300, "budget_left": 138120}
physim.run({"segments": [{"t": 15, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 105, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33], "series": true})
physim.run({"segments": [{"t": 15, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 105, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 16, 25, 33], "series": true})
{"ticks_run": 120, "budget_left": 138000}
physim.reset({})
A 15-tick −1 pulse fires an irreversible transit that completes on its own after release (point of no return within 15 ticks). Port 0 is a one-shot switch: A → C, with C absorbing. Now characterizing port 1 the same way.
{"budget_left": 137800}
physim.run({"segments": [{"t": 150, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 1, 30, 31, 32, 16], "series": true})
{"ticks_run": 250, "budget_left": 137550}
physim.run({"segments": [{"t": 300, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20], "series": true, "max_numbers": 360})
{"ticks_run": 400, "budget_left": 137150}
physim.run({"segments": [{"t": 200, "u": [0, -0.5, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20], "series": true, "max_numbers": 360})
{"ticks_run": 260, "budget_left": 136890}
physim.run({"segments": [{"t": 200, "u": [0, 0, -1, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 32, 20, 30], "series": true, "max_numbers": 360})
{"ticks_run": 260, "budget_left": 136630}
physim.run({"segments": [{"t": 200, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 32], "series": true, "max_numbers": 360})
{"ticks_run": 260, "budget_left": 136370}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 360})
Port 2 is another one-way switch (fast at −1, slow creep at +1, floor absorbing at ch1 ≈ −0.55, ch32 ≈ −0.40). Port 3 now.
{"ticks_run": 260, "budget_left": 136110}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 360})
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 360})
{"ticks_run": 360, "budget_left": 135750}
physim.reset({})
{"budget_left": 135550}
physim.run({"segments": [{"t": 100, "u": [0, 0, -0.3, 0, 0, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, -0.5, 0, 0, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100,)
{"ticks_run": 420, "budget_left": 135130}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, -0.7, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels)
{"ticks_run": 300, "budget_left": 134830}
physim.run({"segments": [{"t": 400, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 32], "series": true, "max_numbers": 360})
{"ticks_run": 460, "budget_left": 134370}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 360})
{"ticks_run": 460, "budget_left": 133910}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 360})
{"ticks_run": 260, "budget_left": 133650}
physim.run({"segments": [{"t": 250, "u": [0, 0.25, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, -0.7, 0, 0, 0, 0, 0, 0]}], "channels": [20], "series": true, "max_numbers": 360, "stride": 2})
Good — port 3's upper section is reversible with gentle drive. Now efficient parameter sweeps. Port 1 rate linearity first.
{"ticks_run": 500, "budget_left": 133150}
physim.reset({})
{"budget_left": 132950}
physim.run({"segments": [{"t": 250, "u": [-0.75, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 360})
physim.run({"segments": [{"t": 250, "u": [-0.75, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 360})
{"ticks_run": 310, "budget_left": 132640}
physim.run({"segments": [{"t": 250, "u": [0, 0, -0.75, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 32], "series": true, "max_numbers": 360})
{"ticks_run": 310, "budget_left": 132330}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, -0.75, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 360})
{"ticks_run": 310, "budget_left": 132020}
physim.reset({})
{"budget_left": 131820}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, -1, -1, -1, -1]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 131670}
physim.run({"segments": [{"t": 400, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 360})
{"ticks_run": 460, "budget_left": 131210}
physim.run({"segments": [{"t": 400, "u": [0, 0, -0.7, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 32], "series": true, "max_numbers": 240})
{"ticks_run": 460, "budget_left": 130750}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, -0.7, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31], "series": true, "max_numbers": 240})
{"ticks_run": 460, "budget_left": 130290}
physim.reset({})
{"budget_left": 130090}
physim.run({"segments": [{"t": 500, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 280})
{"ticks_run": 560, "budget_left": 129530}
physim.run({"segments": [{"t": 400, "u": [0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 200})
physim.run({"segments": [{"t": 400, "u": [0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 200})
{"ticks_run": 460, "budget_left": 129070}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0.5, 0.5, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 32, 30, 31], "series": true, "max_numbers": 240})
{"ticks_run": 360, "budget_left": 128710}
physim.reset({})
{"budget_left": 128510}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 128390}
physim.run({"segments": [{"t": 400, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 160})
{"ticks_run": 460, "budget_left": 127930}
physim.run({"segments": [{"t": 80, "u": [0, 0, -1, -1, 0, 0, 0, 0]}, {"t": 150, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 290, "budget_left": 127640}
physim.reset({})
{"budget_left": 127440}
physim.run({"segments": [{"t": 120, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 13, 35, 20, 18]})
{"ticks_run": 180, "budget_left": 127260}
physim.run({"segments": [{"t": 80, "u": [0, 0, -1, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 13, 35, 1, 32]})
{"ticks_run": 140, "budget_left": 127120}
physim.run({"segments": [{"t": 80, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 35, 30, 31, 18, 27]})
{"ticks_run": 140, "budget_left": 126980}
physim.reset({})
physim.reset({})
{"budget_left": 126780}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 126630}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 126480}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 126330}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 126180}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 126030}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 125880}
physim.run({"segments": [{"t": 100, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 150, "budget_left": 125730}
physim.run({"segments": [{"t": 200, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 250, "budget_left": 125480}
physim.run({"segments": [{"t": 300, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 13, 32]})
{"ticks_run": 350, "budget_left": 125130}
physim.reset({})
{"budget_left": 124930}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 30, 31, 35, 18]})
{"ticks_run": 100, "budget_left": 124830}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 30, 31, 35, 18]})
{"ticks_run": 150, "budget_left": 124680}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 30, 31, 35, 18]})
{"ticks_run": 200, "budget_left": 124480}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 30, 31, 35, 18]})
{"ticks_run": 350, "budget_left": 124130}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 30, 31, 35, 18]})
{"ticks_run": 350, "budget_left": 123780}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 30, 31, 35, 18]})
{"ticks_run": 450, "budget_left": 123330}
physim.reset({})
{"budget_left": 123130}
physim.run({"segments": [{"t": 90, "u": [0, 0, -1, 0, 0, 0, 0, 0]}, {"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 1, 32], "series": true, "max_numbers": 240})
{"ticks_run": 120, "budget_left": 123010}
physim.run({"segments": [{"t": 90, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 35, 30, 31], "series": true, "max_numbers": 240})
physim.run({"segments": [{"t": 90, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 35, 30, 31], "series": true, "max_numbers": 240})
{"ticks_run": 120, "budget_left": 122890}
physim.run({"segments": [{"t": 250, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20]})
{"ticks_run": 310, "budget_left": 122580}
physim.run({"segments": [{"t": 6, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 114, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 240})
{"ticks_run": 120, "budget_left": 122460}
physim.run({"segments": [{"t": 10, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 110, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 120})
{"ticks_run": 120, "budget_left": 122340}
physim.submit_theory({"code": "\nBASE = [0.08,0.28,-0.31,-0.47,0.22,-0.23,-0.12,0.06,-0.31,-0.645,0.02,\n        -0.707,-0.334,0.815,-0.35,0.185,-0.50,-0.452,0.21,-0.740,\n        -0.01,0.735,-0.53,-0.472,-0.535,-0.14,0.1)
physim.submit_theory({"code": "\nBASE = [0.08,0.28,-0.31,-0.47,0.22,-0.23,-0.12,0.06,-0.31,-0.645,0.02,\n        -0.707,-0.334,0.815,-0.35,0.185,-0.50,-0.452,0.21,-0.740,\n        -0.01,0.735,-0.53,-0.472,-0.535,-0.14,0.1)
physim.reset({})
{"budget_left": 122140}
physim.run({"segments": [{"t": 200, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [16, 33], "series": true, "max_numbers": 200})
{"ticks_run": 300, "budget_left": 121840}
physim.run({"segments": [{"t": 200, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1)
{"ticks_run": 460, "budget_left": 121380}
physim.run({"segments": [{"t": 150, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels")
{"ticks_run": 460, "budget_left": 120920}
All regimes reproduce correctly. Resubmitting the theory with accommodation.
physim.submit_theory({"code": "\nBASE = [0.08,0.28,-0.31,-0.47,0.22,-0.23,-0.12,0.06,-0.31,-0.645,0.02,\n        -0.707,-0.334,0.815,-0.35,0.185,-0.50,-0.452,0.21,-0.740,\n        -0.01,0.735,-0.53,-0.472,-0.535,-0.14,0.1)
physim.ready({})
physim.ready({})
physim.status({})
{"error": "exploration is over; reply with the answers object"}
Exploration phase has closed and I have 16 prediction contracts plus 5 preparation contracts. My model covers every one — most target either constant channels or well-characterized fuse/integrator behaviors. Computing answers:
physim.answer({"answers": [{"id": 0, "mean": 0.185, "low": 0.13, "high": 0.24}, {"id": 1, "mean": 0.28, "low": 0.225, "high": 0.335}, {"id": 2, "mean": 0.821, "low": 0.765, "high": 0.875}, {"id": 3, "mean": -0.537,)
{"received": 16}
physim.answer_prep({"id": 100, "code": "\ndef policy(t, y, mem):\n    u = [0.0]*8\n    try:\n        v = y[16]\n        e = mem.get('e')\n        e = v if e is None else 0.9*e + 0.1*v\n        mem['e'] = e\n    except E)
physim.answer_prep({"id": 101, "code": "\ndef policy(t, y, mem):\n    u = [0.0]*8\n    try:\n        v = y[13]\n        e = mem.get('e')\n        e = v if e is None else 0.9*e + 0.1*v\n        mem['e'] = e\n    except E)
physim.answer_prep({"id": 101, "code": "\ndef policy(t, y, mem):\n    u = [0.0]*8\n    try:\n        v = y[13]\n        e = mem.get('e')\n        e = v if e is None else 0.9*e + 0.1*v\n        mem['e'] = e\n    except E)
physim.answer_prep({"id": 102, "code": "\ndef policy(t, y, mem):\n    u = [0.0]*8\n    try:\n        v = y[33]\n        e = mem.get('e')\n        e = v if e is None else 0.9*e + 0.1*v\n        mem['e'] = e\n    except E)
physim.answer_prep({"id": 103, "code": "\ndef policy(t, y, mem):\n    u = [0.0]*8\n    try:\n        v = y[35]\n        e = mem.get('e')\n        e = v if e is None else 0.9*e + 0.1*v\n        mem['e'] = e\n    except E)
physim.answer_prep({"id": 104, "code": "\nCANDS = [\n [0,0,0,0, 1, 1, 1, 1],\n [0,0,0,0,-1,-1,-1,-1],\n [0,0,0,0, 1,-1, 1,-1],\n [0,0,0,0,-1, 1,-1, 1],\n [0,0,0,0, 1, 1,-1,-1],\n [0,0,0,0,-1,-1, 1, 1],\n [0,0,0,0, 1,-1,)
All contracts are answered. Here's a summary of the investigation and what was submitted.

## What the system turned out to be

36 sensors read four independent hidden latents, driven one-per-port by ports 0–3 (ports 4–7 are completely inert; the remaining ~23 sensors are constants + noise, sd ≈ 0.05):

- **Ports 0, 2, 3 are one-way "fuses"** (readouts: port 0 → ch{14,16,25,33}, port 2 → ch{0,1,13
anthropic/claude-fable-5 · C1 seed 0 · tier tools · accuracy 0.93 · preparation 1.00 · theory 0.88 · budget 6%

S1=0.97 · S2=0.94 · S3=0.92 · S4=0.88 · coverage 1.00 · 182 nodes

Narrative experiment log

timeline
  1. 2× free run (600 ticks; 300 ticks, all inputs 0).
  2. 10× single-port probe (1,550 ticks; port 0 at +0.06, 150t).
  3. Free run (600 ticks; 600 ticks, all inputs 0).
  4. Reset to fresh initial conditions (−200 ticks).
  5. Free run (60 ticks; 60 ticks, all inputs 0).
  6. 2× single-port probe (240 ticks; port 0 at +0.12, 120t).
  7. Free run (120 ticks; 120 ticks, all inputs 0).
  8. Single-port probe (120 ticks; port 0 at -0.12, 120t) — ch33 +0.57→-0.59, ch17 -0.24→+0.60, ch1 +0.36→-0.14.
  9. Free run (120 ticks; 120 ticks, all inputs 0).
  10. Drive → release (240 ticks; drive +0.12 for 120t, release 120t).
  11. Single-port probe (400 ticks; port 0 at +0.12, 400t).
  12. Reset to fresh initial conditions (−200 ticks).
  13. Single-port probe (120 ticks; port 1 at -0.12, 120t).
  14. Free run (120 ticks; 120 ticks, all inputs 0).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Reset to fresh initial conditions (−200 ticks).
  17. 3× single-port probe (360 ticks; port 2 at -0.12, 120t) — ch6 +0.46→-0.63, ch0 +0.04→+0.78, ch10 -0.06→-0.79.
  18. Free run (120 ticks; 120 ticks, all inputs 0).
  19. Reset to fresh initial conditions (−200 ticks).
  20. Single-port probe (120 ticks; port 4 at -0.12, 120t).
  21. Free run (120 ticks; 120 ticks, all inputs 0).
  22. Reset to fresh initial conditions (−200 ticks).
  23. Reset to fresh initial conditions (−200 ticks).
  24. 12× single-port probe (1,620 ticks; port 4 at +0.12, 120t) — ch33 +0.36→-0.59, ch17 -0.13→+0.62, ch1 +0.25→-0.15.
  25. Reset to fresh initial conditions (−200 ticks).
  26. Drive → release (120 ticks; drive -0.12 for 30t, release 90t).
  27. Reset to fresh initial conditions (−200 ticks).
  28. Drive → release (120 ticks; drive -0.12 for 10t, release 110t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Single-port probe (120 ticks; port 1 at +0.12, 120t).
  31. 2× free run (300 ticks; 150 ticks, all inputs 0).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Single-port probe (120 ticks; port 3 at +0.12, 120t).
  34. Free run (120 ticks; 120 ticks, all inputs 0) — ch6 +0.73→+0.57.
  35. Single-port probe (120 ticks; port 0 at +0.12, 120t) — ch33 +0.49→+0.66.
  36. Free run (120 ticks; 120 ticks, all inputs 0).
  37. 2× multi-port probe (300 ticks; ports [0, 2] at +0.05, 150t).
  38. 4× free run (520 ticks; 100 ticks, all inputs 0).
  39. Ended exploration → received 0 prediction contracts.
  40. ✗ free run rejected: exploration is over; reply with the answers object.
  41. Submitted 16 contract answers.
  42. Submitted preparation policy for contract 100 ("Flip bistable unit U3 (read by ch6: baseline +0.47, flipped -0.64) via port3 = -1.").
  43. Submitted preparation policy for contract 101 ("Flip bistable unit U0 (read by ch33: baseline +0.52, flipped -0.59) via port0 = -1.").
  44. Submitted preparation policy for contract 102 ("Flip bistable unit U1 (read by ch22: baseline +0.44, flipped -0.52) via port1 = -1.").
  45. Submitted an executable theory (3,331 chars).
  46. Submitted an executable theory (3,331 chars).
  47. Submitted an executable theory (3,330 chars).

Agent-written files (its instruments & theories)

app/physim/notes.md (4,963 chars)
# Physim findings
- 8 inputs, 36 sensors, noise sd ~0.05 per tick (iid-ish). obs window = final 20 ticks.
- Fresh draws start at canonical baseline (reproducible across resets).
- System = network of BISTABLE latching units. Strong input flips units; they stay flipped at u=0 (no relaxation over 600+ ticks).
- Settling fast (<60 ticks).

## Canonical fresh baseline (tail_mean)
0:0.035 1:0.334 2:0.365 3:-0.004 4:-0.021 5:0.121 6:0.467 7:-0.607 8:-0.379 9:0.172 10:-0.053
11:0.438 12:-0.444 13:0.489 14:-0.565 15:-0.293 16:-0.912 17:-0.257 18:0.592 19:-0.624 20:0.424
21:-0.533 22:0.444 23:0.453 24:-0.150 25:-0.585 26:0.357 27:-0.276(-0.30) 28:-0.448 29:0.049 30:-0.193
31:-0.332 32:-0.051 33:0.51(0.53) 34:0.169 35:-0.272

## Port 0
- +1 (from fresh): small shifts: ch33 +0.14 (0.53->0.675), ch1 +0.075 (0.324->0.399), ch17 -0.08, ch27 +0.11 (-0.30->-0.20), ch9 +0.02. Release: mostly returns (ch33 0.57, ch27 -0.24 slight retention).
- -1: FLIPS: ch1 0.36->-0.15, ch17 -0.24->+0.61, ch33 0.57->-0.59, ch27 ->-0.49. All stay latched after release.
- +1 x400 ticks does NOT flip back (one-way sticky). In flipped branch +1 barely moves sensors.

## Port sweep at +1 (old draw, confounded by persistence)
- port1+1: ch22 0.44->0.735 (driven), release->0.59 latched; ch13 +0.13 transient; ch28 -0.45->-0.30; ch17 +0.10; ch21 +0.07
- port2+1: ch28 ->-0.21 latch, ch21 ->-0.39 latch
- port3+1: ch0 -0.24 (driven), ch6 +0.28 (driven); both relax slowly (~150+ ticks, partial)
- port4+1: ch10 -0.15, ch32 -0.09 (persistent-ish)
- port5,6,7 +1: weak/nothing obvious

## Clean fresh-state port map (hold 120 ticks, then release 120)
- Port0 -1: FLIP group U0: ch1 0.33->-0.15, ch17 -0.26->+0.60, ch27 -0.30->-0.47, ch33 0.52->-0.59. Latched. +1 weak transient (ch33 +0.14 driven, release ~+0.04 retention). NOT reversible by +1 (even 400 ticks).
- Port1 -1: FLIP group U1: ch13 0.49->-0.27, ch21 -0.53->+0.32, ch22 0.44->-0.52, ch28 -0.45->+0.42. Latched. +1: drives ch22 to 0.735, latches ~0.59 (old sweep, ch28 -0.30, ch17 -0.15, ch21 -0.47 partial: DIFFERENT pattern => port1+ flips separate weak unit U1b?)
- Port2: inert alone (both signs).
- Port3 -1: FLIP group U3: ch0 0.03->0.77, ch6 0.47->-0.64, ch10 -0.05->-0.78, ch32 -0.05->-0.51. Latched. +1: ch0 -0.24, ch6 +0.28 driven; old sweep ch6 stayed ~0.58 elevated => partial latch up-branch?
- Port4 -1: FLIP ch25 -0.585->-0.13. Latched. +1: nothing (ch11 -0.04?).
- Port5 +1: ch35 -0.27->-0.36 driven, latches ~-0.33/-0.35; ch29 small down. -1: nothing.
- Port6, Port7: inert alone (both signs).

## Quantitative details
- Unit relaxation fast: tau ~10-15 ticks. Sub-threshold pushes decay within ~30-50 ticks of release.
- U0 flip via port0: stochastic escape. -0.4/-0.6: no flip @120-300 ticks (graded shift only); -0.8: flipped ~350 ticks; -1.0: flips in <10-30 ticks. One-way (port0+1 x400 does not unflip).
- 10-tick pulse at -1 on port0 suffices to flip U0.
- port4 -0.5 flips ch25 quickly (threshold <=0.5).
- B-units (+ side small latches):
  - B0 (port0 +1): ch33 +0.05, ch27 +0.06, ch1 +0.03 after release
  - B1 (port1 +1): ch22 +0.11, ch28 +0.19, ch21 +0.12, ch13 +0.05; at +0.5: ch22 +0.09, ch28 +0.07, ch13 +0.06 (graded/partial)
  - B3 (port3 +1): ch6 +0.10, ch0 -0.04
- Driven (while held) approx linear gains (excl. latch): port0->ch33 ~0.15u, ch17 ~-0.11u, ch1 ~0.08u; port1->ch22 ~0.14u, ch13 ~0.11u, ch28 ~0.10u; port3->ch0 ~-0.16u, ch6 ~+0.17u; in flipped well drive adds ~nothing (saturation).
- In-flip driven values ~= latched values (saturated).
- Port2 modulation of port0 threshold: none obvious (maybe tiny stabilizing at -1, within noise).
- Flip latched values (sensor absolute):
  U0 flipped: ch1 -0.15, ch17 +0.61, ch27 -0.47, ch33 -0.59 (also ch24 ~-0.19?)
  U1 flipped: ch13 -0.27, ch21 +0.32, ch22 -0.52, ch28 +0.42
  U3 flipped: ch0 +0.77, ch6 -0.64, ch10 -0.77, ch32 -0.51
  U4 flipped: ch25 -0.13
  U5 (port5+1): ch35 -0.35 vs baseline -0.27, ch29 ~0.0 vs 0.05

## FINAL SUBMISSION (2026-08-13)
Prediction answers: id0 ch35 -0.278 | id1/3 ch13 0.508 | id2 ch24 -0.158 | id4 ch29 0.03 (port0 +0.885 drive)
| id5 ch27 -0.212 (port0 +0.774) | id6 ch21 +0.31 (port1 -0.848 305t, ASSUMED FLIPPED, wide interval)
| id7 ch22 -0.53 (port1 -0.891 333t, assumed flipped) | id8 ch32 -0.51 (U3 latch) | id9 ch24 -0.168 (U0)
| id10 ch10 -0.042 (U0, ch10 unaffected) | id11 ch8 -0.371 | id12 ch10 -0.053 (port2 inert)
| id13 ch13 0.508 (U3 flip irrelevant) | id14 ch10 -0.08 (B3 latch) | id15 ch28 -0.435 (U3 ~no effect on ch28)
Prep policies: 100 flip U3 (port3=-1 until y6<-0.45 x60) -> ch6=-0.64 in [-1,-0.297];
101 flip U0 (port0=-1, y33<-0.40) -> ch33=-0.59 in [-0.878,-0.259]; 102 flip U1 (port1=-1, y22<-0.35) -> ch22=-0.52 in [-0.805,-0.21].
Theory: binary latch simulator submitted (BASE + unit deltas + drive gains + escape-rate flip progress).
Lesson: run/reset are DISABLED after physim_ready — 140k ticks unspent. Front-load all stochastic-threshold calibration next time.
app/.vf-claude/c8c15ed113cc4a99a81761ad9b511d15/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T02:10:51.336Z",
  "machineID": "67d41472ba67ec77d23daf6c60da1caa6731b06b7ef4377c92e52f5859c3033f",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "191570aeff2084bf9f26bc755fc88f61fb6407b8511537448b08a6579cc11bb3"
}
app/physim/baseline.json (627 chars)
{"baseline_tail_mean": {"0": 0.035, "1": 0.3338, "2": 0.3649, "3": -0.0042, "4": -0.0208, "5": 0.1211, "6": 0.4672, "7": -0.6066, "8": -0.3794, "9": 0.1719, "10": -0.0528, "11": 0.4384, "12": -0.444, "13": 0.4894, "14": -0.5647, "15": -0.2925, "16": -0.9121, "17": -0.2568, "18": 0.5922, "19": -0.6239, "20": 0.4244, "21": -0.5332, "22": 0.4436, "23": 0.4534, "24": -0.1501, "25": -0.585, "26": 0.3571, "27": -0.2757, "28": -0.448, "29": 0.0493, "30": -0.1927, "31": -0.3315, "32": -0.0507, "33": 0.51, "34": 0.1693, "35": -0.2723},
"baseline2": {"0": 0.0419, "1": 0.3422, "2": 0.3685, "6": 0.4765, "16": -0.93, "18": 0.5807}}

Preparation contracts

idchannelbandsuccessreleased finals
1006[-1.00, -0.30]100%-0.64, -0.64, -0.64, -0.63
10133[-0.88, -0.26]100%-0.57, -0.55, -0.59, -0.58
10222[-0.80, -0.21]100%-0.53, -0.51, -0.51, -0.51

Executable theory

accuracy 0.880 · per-stratum {'S1': 0.97, 'S2': 0.71, 'S3': 0.94, 'S4': 0.9} · 3,330 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.2860.3160.00.976
1S1+0.5110.1640.00.983
2S1-0.1500.1750.00.955
3S1+0.5140.1640.00.966
4S2+0.0410.2320.00.955
5S2-0.1640.2250.20.807
6S2+0.3090.2020.00.996
7S2-0.5280.2480.00.991
8S3-0.4950.1300.10.890
9S3-0.1550.1750.10.926
10S3-0.0630.1860.10.895
11S3-0.3790.2440.00.967
12S4-0.0650.1860.10.937
13S4+0.5140.1640.00.961
14S4-0.1480.1860.40.695
15S4-0.4470.2150.10.946
Verbatim log (154 entries)
physim.status({})
I'll start by checking the interface and budget, then run initial probing experiments.
physim.status({})
I'll start by checking the interface and budget, then run initial probing experiments.
{"budget_left": 150000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 149700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 2, 6, 16, 18], "series": true, "max_numbers": 360})
The system settles to non-zero baselines with noise SD ~0.05. Let me examine time series at rest and then probe each input port.
{"ticks_run": 300, "budget_left": 149400}
physim.run({"segments": [{"t": 150, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 149250}
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [33, 1, 17, 9, 0, 27], "series": true, "max_numbers": 360})
{"ticks_run": 200, "budget_left": 149050}
physim.run({"segments": [{"t": 150, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Responses settle quickly (<60 ticks) with modest gains. Let me probe each port at +1.0 sequentially.
{"ticks_run": 150, "budget_left": 148900}
physim.run({"segments": [{"t": 150, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148750}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148600}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148450}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148300}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148150}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148000}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22, 28, 17, 21, 10, 32], "series": true, "max_numbers": 360})
Now let me watch relaxation at zero input to measure the slow decay of the persistent channels.
{"ticks_run": 600, "budget_left": 147400}
physim.reset({})
{"budget_left": 147200}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 60, "budget_left": 147140}
physim.run({"segments": [{"t": 120, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 120, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 147020}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 146900}
physim.run({"segments": [{"t": 120, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 146780}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 146660}
physim.run({"segments": [{"t": 120, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 240, "budget_left": 146420}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 33, 27], "series": true, "max_numbers": 360})
{"ticks_run": 400, "budget_left": 146020}
physim.reset({})
{"budget_left": 145820}
physim.run({"segments": [{"t": 120, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 145700}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 145580}
physim.reset({})
physim.reset({})
{"budget_left": 145380}
physim.run({"segments": [{"t": 120, "u": [0, 0, -1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 145260}
physim.run({"segments": [{"t": 120, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 2 = -1 does nothing. Testing +1 directly (state is still at baseline).
{"ticks_run": 120, "budget_left": 145140}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, -1, 0, 0, 0, 0]}], "channels": "all"})
Port 2 does nothing alone in either direction. Moving to port 3 (state still at baseline).
{"ticks_run": 120, "budget_left": 145020}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 144900}
physim.reset({})
{"budget_left": 144700}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 144580}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 144460}
physim.reset({})
physim.reset({})
{"budget_left": 144260}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 144140}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, -1, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 144020}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 143900}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 143780}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 143660}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, -1]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 143540}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 143420}
physim.run({"segments": [{"t": 120, "u": [-0.4, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24]})
{"ticks_run": 120, "budget_left": 143300}
physim.run({"segments": [{"t": 120, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24]})
physim.run({"segments": [{"t": 120, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24]})
{"ticks_run": 120, "budget_left": 143180}
physim.run({"segments": [{"t": 120, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24]})
{"ticks_run": 120, "budget_left": 143060}
physim.run({"segments": [{"t": 300, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24], "series": true})
Graded response up to -0.8 with no flip — threshold is between -0.8 and -1.0. Near-threshold escape may be slow; let me hold -0.8 longer.
{"ticks_run": 300, "budget_left": 142760}
physim.reset({})
{"budget_left": 142560}
physim.run({"segments": [{"t": 30, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 90, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33], "series": true})
{"ticks_run": 120, "budget_left": 142440}
physim.reset({})
{"budget_left": 142240}
physim.run({"segments": [{"t": 10, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 110, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33], "series": true})
{"ticks_run": 120, "budget_left": 142120}
physim.reset({})
{"budget_left": 141920}
physim.run({"segments": [{"t": 120, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": [13, 21, 22, 28, 17, 25]})
{"ticks_run": 120, "budget_left": 141800}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 21, 22, 28, 17, 25], "series": true})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 21, 22, 28, 17, 25], "series": true})
{"ticks_run": 150, "budget_left": 141650}
physim.reset({})
{"budget_left": 141450}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": [0, 6, 10, 32, 33, 25]})
{"ticks_run": 120, "budget_left": 141330}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 6, 10, 32, 33, 25]})
{"ticks_run": 120, "budget_left": 141210}
physim.run({"segments": [{"t": 120, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24]})
{"ticks_run": 120, "budget_left": 141090}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 9, 24]})
{"ticks_run": 120, "budget_left": 140970}
physim.run({"segments": [{"t": 150, "u": [-0.6, 0, 1, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 22, 6]})
Both ports 0 and 3 have small positive-side latches too. Now testing whether "inert" port 2 modulates port 0's effect (combination test).
{"ticks_run": 150, "budget_left": 140820}
physim.run({"segments": [{"t": 150, "u": [-0.6, 0, -1, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 22, 6]})
{"ticks_run": 150, "budget_left": 140670}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [33, 17, 1], "series": true, "stride": 2})
No strong modulation from port 2. Now watching relaxation after releasing this sub-threshold push (key for weak-push contracts).
{"ticks_run": 100, "budget_left": 140570}
physim.run({"segments": [{"t": 150, "u": [0, 0.5, 0, 0, -0.5, 0, 0, 0]}], "channels": [13, 21, 22, 28, 25, 11]})
physim.run({"segments": [{"t": 150, "u": [0, 0.5, 0, 0, -0.5, 0, 0, 0]}], "channels": [13, 21, 22, 28, 25, 11]})
{"ticks_run": 150, "budget_left": 140420}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 21, 22, 28, 25, 11]})
{"ticks_run": 120, "budget_left": 140300}
physim.ready({})
physim.status({})
{"error": "exploration is over; reply with the answers object"}
physim.run({"segments": [{"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [35, 13, 24]})
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": -0.278, "low": -0.345, "high": -0.21}, {"id": 1, "mean": 0.508, "low": 0.445, "high": 0.57}, {"id": 2, "mean": -0.158, "low": -0.225, "high": -0.095}, {"id": 3, "mean": )
{"received": 16}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # Flip bistable unit U3 (read by ch6: baseline +0.47, flipped -0.64) via port3 = -1.\n    # Latch persists at u=0, so after confirmation hold zero and )
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Flip bistable unit U0 (read by ch33: baseline +0.52, flipped -0.59) via port0 = -1.\n    ok = mem.get('ok', 0)\n    if y[33] < -0.40:\n        ok += )
physim.answer_prep({"id": 102, "code": "def policy(t, y, mem):\n    # Flip bistable unit U1 (read by ch22: baseline +0.44, flipped -0.52) via port1 = -1.\n    ok = mem.get('ok', 0)\n    if y[22] < -0.35:\n        ok += )
physim.submit_theory({"code": "eBASE = [0.033, 0.332, 0.365, -0.014, -0.033, 0.131, 0.470, -0.607, -0.379, 0.203, -0.053,\n        0.443, -0.426, 0.508, -0.556, -0.281, -0.917, -0.257, 0.597, -0.619, 0.445,\n        -0.53)
physim.submit_theory({"code": "eBASE = [0.033, 0.332, 0.365, -0.014, -0.033, 0.131, 0.470, -0.607, -0.379, 0.203, -0.053,\n        0.443, -0.426, 0.508, -0.556, -0.281, -0.917, -0.257, 0.597, -0.619, 0.445,\n        -0.53)
physim.submit_theory({"code": "BASE = [0.033, 0.332, 0.365, -0.014, -0.033, 0.131, 0.470, -0.607, -0.379, 0.203, -0.053,\n        0.443, -0.426, 0.508, -0.556, -0.281, -0.917, -0.257, 0.597, -0.619, 0.445,\n        -0.530)
All contracts are answered and every submission is recorded. Here's the summary of the investigation:

## What the system turned out to be

A network of **bistable latching units** behind 36 noisy sensors (noise SD ~0.05, fast settling τ ≈ 10–15 ticks). Fresh draws always start at one canonical baseline. Strong **negative** drive on a port kicks its unit over a barrier into a second attractor, whe
anthropic/claude-fable-5 · C1 seed 3 · tier tools · accuracy 0.91 · preparation 1.00 · theory 0.93 · budget 23%

S1=0.98 · S2=0.96 · S3=0.79 · S4=0.92 · coverage 0.94 · 441 nodes

Narrative experiment log

timeline
  1. 2× free run (700 ticks; 300 ticks, all inputs 0).
  2. 9× single-port probe (1,350 ticks; port 0 at +0.10, 150t) — ch22 +0.77→-0.40, ch29 -0.90→-0.75.
  3. Free run (600 ticks; 600 ticks, all inputs 0).
  4. Reset to fresh initial conditions (−200 ticks).
  5. Free run (100 ticks; 100 ticks, all inputs 0).
  6. Reset to fresh initial conditions (−200 ticks).
  7. Free run (100 ticks; 100 ticks, all inputs 0).
  8. 2× single-port probe (240 ticks; port 7 at +0.10, 120t).
  9. Free run (120 ticks; 120 ticks, all inputs 0).
  10. Drive → release (240 ticks; drive -0.10 for 120t, release 120t) — ch22 -0.37→+0.67.
  11. Single-port probe (150 ticks; port 0 at +0.10, 150t).
  12. Free run (150 ticks; 150 ticks, all inputs 0) — ch29 -0.89→-0.73.
  13. Drive → release (350 ticks; drive -0.10 for 200t, release 150t) — ch29 -0.73→+0.65, ch0 +0.00→-0.84, ch2 -0.28→-0.61.
  14. Free run (60 ticks; 60 ticks, all inputs 0) — ch22 +0.63→-0.39.
  15. Drive → release (250 ticks; drive +0.10 for 150t, release 100t).
  16. Reset to fresh initial conditions (−200 ticks).
  17. 2× single-port probe (300 ticks; port 1 at +0.10, 150t).
  18. 2× free run (350 ticks; 150 ticks, all inputs 0).
  19. Single-port probe (200 ticks; port 1 at -0.10, 200t) — ch11 +0.24→-0.54, ch32 +0.33→-0.33, ch6 -0.26→-0.88.
  20. Free run (150 ticks; 150 ticks, all inputs 0).
  21. Reset to fresh initial conditions (−200 ticks).
  22. 2× drive → release (600 ticks; drive +0.10 for 150t, release 150t) — ch20 +0.68→-0.71, ch31 -0.28→+0.99, ch26 -0.35→+0.71.
  23. Reset to fresh initial conditions (−200 ticks).
  24. 3× drive → release (900 ticks; drive +0.10 for 150t, release 150t).
  25. Reset to fresh initial conditions (−200 ticks).
  26. 2× drive → release (600 ticks; drive +0.10 for 150t, release 150t) — ch14 -0.37→-0.04.
  27. Reset to fresh initial conditions (−200 ticks).
  28. 5× drive → release (1,500 ticks; drive +0.10 for 150t, release 150t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Single-port probe (100 ticks; port 0 at -0.03, 100t).
  31. Free run (60 ticks; 60 ticks, all inputs 0).
  32. Single-port probe (100 ticks; port 0 at -0.05, 100t).
  33. Free run (60 ticks; 60 ticks, all inputs 0).
  34. Single-port probe (100 ticks; port 0 at -0.07, 100t).
  35. Free run (80 ticks; 80 ticks, all inputs 0) — ch29 -0.62→-0.79.
  36. Drive → release (180 ticks; drive -0.09 for 100t, release 80t) — ch29 -0.79→+0.64, ch22 +0.68→-0.37, ch0 +0.20→-0.83.
  37. Reset to fresh initial conditions (−200 ticks).
  38. 2× drive → release (440 ticks; drive +0.05 for 120t, release 100t).
  39. Free run (200 ticks; 200 ticks, all inputs 0).
  40. Drive → release (300 ticks; drive +0.07 for 150t, release 150t).
  41. Free run (150 ticks; 150 ticks, all inputs 0).
  42. Reset to fresh initial conditions (−200 ticks).
  43. 4× drive → release (1,060 ticks; drive +0.04 for 100t, release 80t).
  44. Reset to fresh initial conditions (−200 ticks).
  45. 2× free run (320 ticks; 160 ticks, all inputs 0).
  46. Drive → release (230 ticks; drive +0.10 for 150t, release 80t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. 3× drive → release (570 ticks; drive -0.04 for 120t, release 70t) — ch11 +0.26→-0.57, ch6 -0.18→-0.87, ch32 +0.27→-0.32.
  49. Reset to fresh initial conditions (−200 ticks).
  50. 2× drive → release (540 ticks; drive +0.05 for 120t, release 120t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. 3× drive → release (570 ticks; drive -0.06 for 120t, release 70t) — ch20 +0.68→-0.70, ch31 -0.32→+0.97, ch26 -0.21→+0.72.
  53. Reset to fresh initial conditions (−200 ticks).
  54. 4× drive → release (950 ticks; drive +0.05 for 150t, release 120t) — ch24 -0.43→+0.46, ch13 +0.26→-0.51, ch18 -0.06→+0.59.
  55. Reset to fresh initial conditions (−200 ticks).
  56. 8× drive → release (1,980 ticks; drive +0.06 for 150t, release 150t).
  57. Free run (200 ticks; 200 ticks, all inputs 0).
  58. Drive → release (250 ticks; drive -0.12 for 150t, release 100t).
  59. Reset to fresh initial conditions (−200 ticks).
  60. 4× drive → release (980 ticks; drive -0.06 for 120t, release 70t).
  61. Reset to fresh initial conditions (−200 ticks).
  62. 11× single-port probe (1,280 ticks; port 0 at +0.04, 80t).
  63. 2× free run (300 ticks; 120 ticks, all inputs 0).
  64. Reset to fresh initial conditions (−200 ticks).
  65. Free run (100 ticks; 100 ticks, all inputs 0).
  66. Drive → release (200 ticks; drive -0.10 for 120t, release 80t) — ch29 -0.74→+0.63, ch22 +0.68→-0.38, ch0 +0.15→-0.83.
  67. Reset to fresh initial conditions (−200 ticks).
  68. 2× drive → release (240 ticks; drive -0.10 for 20t, release 100t).
  69. Reset to fresh initial conditions (−200 ticks).
  70. 4× drive → release (1,168 ticks; drive -0.10 for 8t, release 100t).
  71. Free run (60 ticks; 60 ticks, all inputs 0).
  72. Reset to fresh initial conditions (−200 ticks).
  73. Ramp sweep (350 ticks; 350 ticks, peak mean drive +0.12).
  74. 6× drive → release (1,090 ticks; drive -0.10 for 30t, release 80t) — ch22 +0.66→-0.38, ch14 -0.02→-0.36, ch3 -0.06→-0.24.
  75. Reset to fresh initial conditions (−200 ticks).
  76. Free run (300 ticks; 300 ticks, all inputs 0).
  77. 2× drive → release (710 ticks; drive +0.04 for 50t, release 300t) — ch29 -0.81→+0.66, ch0 +0.14→-0.86, ch2 -0.26→-0.61.
  78. Reset to fresh initial conditions (−200 ticks).
  79. 6× drive → release (2,250 ticks; drive -0.10 for 60t, release 300t) — ch14 -0.36→-0.03.
  80. Reset to fresh initial conditions (−200 ticks).
  81. Reset to fresh initial conditions (−200 ticks).
  82. Drive → release (600 ticks; drive +0.10 for 200t, release 400t).
  83. Reset to fresh initial conditions (−200 ticks).
  84. 4× drive → release (1,170 ticks; drive +0.12 for 150t, release 300t) — ch22 +0.68→+0.00.
  85. Free run (300 ticks; 300 ticks, all inputs 0).
  86. 4× drive → release (720 ticks; drive -0.10 for 120t, release 60t).
  87. Reset to fresh initial conditions (−200 ticks).
  88. 3× drive → release (570 ticks; drive -0.07 for 120t, release 70t).
  89. Free run (150 ticks; 150 ticks, all inputs 0).
  90. 2× drive → release (680 ticks; drive -0.07 for 120t, release 100t) — ch11 +0.34→-0.55, ch6 -0.22→-0.89, ch32 +0.31→-0.32.
  91. Reset to fresh initial conditions (−200 ticks).
  92. 15× single-port probe (2,160 ticks; port 0 at +0.06, 100t) — ch29 -0.73→+0.65, ch20 +0.66→-0.70, ch31 -0.28→+0.99.
  93. Drive → release (270 ticks; drive +0.12 for 120t, release 150t).
  94. Submitted an executable theory (4,266 chars).
  95. Ended exploration → received 0 prediction contracts.
  96. Submitted 16 contract answers.
  97. Submitted 16 contract answers.
  98. Submitted preparation policy for contract 100 ("Goal: ch20 in [-1.046, -0.348] after free run.").
  99. Submitted preparation policy for contract 101 ("Goal: ch29 in [0.268, 1.028] after free run.").
  100. Submitted preparation policy for contract 102 ("Goal: ch31 in [0.621, 1.333] after free run.").
  101. Submitted preparation policy for contract 103 ("Goal: ch22 in [-0.666, -0.096] after free run.").

Agent-written files (its instruments & theories)

app/physim/answers.md (1,253 chars)
# Final submissions (2026-08-13)
## Prediction contracts (mean [low, high])
0: ch2 zero-input baseline -> -0.302 [-0.365,-0.24]
1: ch0 baseline -> 0.153 [0.095,0.21]
2,3: ch31 baseline -> -0.386 [-0.44,-0.33]
4: ch31 during port0=-0.986 (C state) -> -0.355 [-0.43,-0.28]
5: ch18 during port2=+0.776 (other family) -> -0.09 [-0.15,-0.03]
6: ch25 during port3=-0.777 (other family) -> -0.11 [-0.18,-0.045]
7: ch22 during port3=+0.729 (untouched, up) -> 0.69 [0.61,0.78]
8: ch6 after port1=+1.0 x389 + release (E2 well) -> -0.34 [-0.48,-0.19]
9: ch34 after port0=+1.0 x379 + release (B well + drift) -> 0.10 [0.01,0.19]
10: ch31 after port1=+1.0 (other family) -> -0.382 [-0.45,-0.31]
11: ch14 after port3=+1.0 (other family) -> -0.375 [-0.43,-0.32]
12: ch29 after B then H flips, long release -> -0.755 [-0.86,-0.66]
13: ch26 after B then F flips -> -0.25 [-0.32,-0.185]
14: ch15 static channel -> 0.951 [0.90,1.00]
15: ch29 after E then H flips -> -0.785 [-0.87,-0.705]
## Prep policies (all target absorbing attractors)
100: H via port2=-1 (ch20 -0.69 in band) | 101: C via port0=-1 (ch29 +0.65 in band)
102: H via port2=-1 (ch31 +0.985 in band) | 103: A-deep via port7=+0.8 (ch22 -0.38 in band)
## Theory: submitted state-machine simulator (theory.py)
app/physim/log.md (350 chars)
# Physim exploration log
36 sensors, 8 inputs. Noise sd ~0.05/tick. Tail = last 20 ticks.
Multistable: after port7=0.8 x150 then zero x600, ch0/3/22/31 shifted persistently.
Baseline draw1 (zero, settled): see data.json run1/run2
Port steps +0.8 x150 sequential (no zero between): runs p0..p7
Key: port7 flips ch22 (+0.78 -> -0.40, persists at zero)
app/physim/model.md (4,011 chars)
# PHYSIM EMPIRICAL MODEL (final)
36 sensors = readouts of ~6 independent multiwell latent families + N(0,0.05) noise/tick.
Tail(20) SE ~0.011. Transients settle in 15-40 ticks. NO direct input feedthrough to sensors
(during-drive value = current well readout + small sub-threshold shift).
Fresh draws ALWAYS start in canonical state S0. Big negative wells are ABSORBING (except K via port4+).

## Canonical S0 (fresh draw, settled; avg of many)
ch: 0:0.155 1:0.79 2:-0.295 3:-0.095 4:-0.062 5:-0.797 6:-0.163 7:-0.692 8:0.938 9:-0.706
10:0.091 11:0.293 12:0.729 13:0.318 14:-0.375 15:0.951 16:-0.492 17:-0.644 18:-0.090 19:0.024
20:0.741 21:0.252 22:0.695 23:-0.338 24:-0.477 25:-0.098 26:-0.252 27:0.091 28:-0.555 29:-0.774
30:0.231 31:-0.381 32:0.318 33:-0.582 34:0.05 35:-0.655
Static channels (immune to all drives): 1,4,5,7,8,9,10,12,15,16,17,19,21,23,27,28,30,33,35

## Families: ports -> sensors (well values)
alpha (p0,p6; p5 inert): 
  S0: ch0 0.155, ch2 -0.295, ch29 -0.774
  C(deep,absorbing): ch0 -0.85, ch2 -0.61, ch29 +0.66, forces ch22 -0.38. Trigger: u0<=-0.7 (>=15t; -0.6 never flips even 400t, oscillates), u6<=-0.65, or u0+u6 sum <=-0.8. -0.8 x20 flips, x8 no.
  B: ch0 0.005, ch29 -0.72, ch34 +0.08. Trigger: u0>=+0.5..0.6 sustained >=120t (80t NO, 150t yes). ramp->+1 hold: yes.
  L: ch29 -0.67, ch2 -0.37, ch0 ~0.13. Trigger: u6=+0.8 x150.
  M-ish: ch0 +0.1..0.2, ch29 -0.86, ch2 -0.20, ch22 0.60. Trigger: repeated port0+ pulses (uncertain, widen intervals).
beta (p1): F(absorbing): ch6 -0.875, ch11 -0.555, ch25 +0.49, ch32 -0.325. Trigger u1<=-0.65 (-0.6 no).
  E: ch6 -0.25(-0.36 @u=1.0), ch11 0.22(0.14@1.0), ch25 -0.03, ch32 0.33. Trigger u1>=+0.6 x>=150 slow (+0.4 no).
gamma (p2): H(absorbing): ch20 -0.70, ch26 +0.71, ch31 +0.985, ch34 -0.79. Trigger u2<=-0.65 (-0.6 no).
  G: ch20 0.69, ch26 -0.31, ch31 -0.30, ch34 -0.07. Trigger u2>=+0.6 slow (+0.4 no/partial).
delta (p3): J(absorbing): ch3 -0.60, ch13 -0.515, ch18 +0.595, ch24 +0.45. Trigger u3<=-0.65 (-0.6 no).
  I: ch3 -0.15..-0.24, ch13 0.34, ch18 -0.07, ch24 -0.49. Trigger u3>=+0.5 x150.
eps (p4): K: ch14 -0.375 -> -0.025 (+ch34 +0.05). Trigger u4<=-0.3 AND >=~100t (x60 no at -0.4; -0.3 x120 yes; -0.15 never).
  REVERSIBLE: u4>=+0.5 x80 restores ch14 -0.37 (+0.3 no).
A (p7): ch22. up 0.695 (canonical). ANY |u7|>=0.15 x~40+ kills up. Landing: weak/brief (0.15-0.3, <=50t) -> mid ~0.0 or -0.25; 
  0.3 x100 or stronger -> -0.38. C-flip forces -0.38. Under sustained u7=-0.8 state hops up rarely (~1/5 runs), freezes up only if released mid-hop. Down effectively absorbing; predict -0.37, widen high side if protocol ends right after long negative u7.

## During-drive sub-threshold shifts (add to current well readout)
p0 -0.2: ch0-.046 ch29+.049 ch22-.072 | -0.4: ch0-.053 ch29+.071 ch22-.095 | -0.5: ch0-.075 ch29+.08 ch22-.06 (osc sd.13)
   +0.3: ch0+.02 ch29-.045 ch22+.05 | +0.5: ch0+.03 ch29-.09 ch22+.09
p1 +0.3: ch11+.03 ch32+.03 | +0.5: ch6+.04 ch11+.05 ch25-.03 ch32+.07 | -0.3: ch6-.06 ch11-.06 ch25+.05 ch32-.03 | -0.5: ch6-.08 ch11-.06 ch25+.05 ch32-.05
p2 +0.3: ch20+.06 ch26-.05 ch31-.04 ch34+.05 | +0.5: ch20+.09 ch26-.05 ch31-.055 | -0.3: ch20-.08 ch26+.06 ch31+.09 ch34-.03 | -0.5: ch20-.08 ch26+.11 ch31+.11 (osc sd.09-.10)
p3 +0.3: ch13+.06 ch24-.035 | +0.5: ch13+.075 ch24-.08 ch18-.04 ch3+.04 | -0.3: ch13-.04 ch18+.05 ch24+.05 | -0.5: ch13-.08 ch18+.04 ch24+.075 ch3-.045 (osc)
p6 +0.3: ch0+.05 ch29-.10 ch2+.05 | +0.5: ch29-.13 ch2+.04 | -0.3: ch0-.04 ch22-.11 | -0.5: ch0-.12 ch22-.14 ch29+.04 (osc)
p4,p5,p7: no visible sub-threshold sensor shifts beyond flips.

## Near-threshold negative drive (-0.5..-0.6 on p0/p2/p3/p6): limit-cycle oscillation, no flip ever;
   tail mean = shifted value above, sd 0.08-0.17 -> widen interval.
## ch34: slow upward drift +0.05..+0.12 with any sustained activity; baseline fresh 0.01-0.06. WIDE intervals unless H (-0.79) or G (-0.07).
## Multi-port: same-family inputs ADD on latent (p0 -0.4 + p6 -0.4 => C). Cross-family independent; flips coexist.
app/.vf-claude/2e485a4bd0404bb79eb12020e6b00b53/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T14:08:48.773Z",
  "machineID": "1a114e54ced1c0ad21874d1972bcd2bef423a5d80572a54430c94b83b7209bb2",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "d1f8ee1fcc2c57335aadd00bd7fb8943a625bfee61f0542aa76bb94e4f8495d3"
}
app/physim/data.py (2,345 chars)
import numpy as np
# canonical baseline S0 (average of several settled zero-input tails, fresh draws)
S0 = {0:0.156,1:0.785,2:-0.314,3:-0.092,4:-0.057,5:-0.793,6:-0.160,7:-0.695,8:0.930,9:-0.700,
10:0.092,11:0.293,12:0.727,13:0.320,14:-0.372,15:0.955,16:-0.499,17:-0.651,18:-0.093,19:0.030,
20:0.744,21:0.249,22:0.699,23:-0.338,24:-0.474,25:-0.101,26:-0.271,27:0.090,28:-0.559,29:-0.774,
30:0.233,31:-0.390,32:0.322,33:-0.578,34:0.052,35:-0.652}
# Unit A flip (port7+ from S0, fast ~15 ticks): ch22 0.70 -> -0.37..-0.39. reverse: port7- (slow ~100 ticks)
# Port0 +0.8: slow flip unit B: ch0 0.155 -> 0.00 (continues after release); drive transients: ch29 -0.89 (-0.12), ch2 -0.24 (+0.075), ch34 +0.03, ch22 +0.07?
# Port0 -0.8: flips big unit C (fast ~30-60 ticks): ch0 -> -0.84, ch2 -> -0.60, ch29 -> +0.65; ALSO flips A (ch22 -> -0.39)
# State S2 after port0-: ch0 -0.836, ch2 -0.605, ch22 -0.385, ch29 +0.655, rest ~ S0
# === Persistent flip map at +/-0.8, 150 ticks, from canonical S0 (post-release deltas) ===
# port0 +: unit B slow (>150t): ch0 -0.16 (0.155->0.0); maybe ch34 +0.03
# port0 -: unit C fast: ch0 -0.99, ch2 -0.29, ch29 +1.42, ch22 -1.08 (locks ch22; port7- cannot unflip in C state)
# port1 +: unit E slow: ch6 -0.10, ch11 -0.06, ch24 -0.04, ch3 -0.03
# port1 -: unit F: ch6 -0.715, ch11 -0.86, ch25 +0.59, ch32 -0.65, ch34 +0.06
# port2 +: unit G: ch34 -0.16, ch31 +0.11, ch26 -0.075, ch20 -0.067
# port2 -: unit H: ch20 -1.39(!0.68->-0.71), ch26 +1.06(->+0.71), ch31 +1.27(->+0.99), ch34 -0.70(->-0.81) [from G-state]
# port3 +: unit I: ch3 -0.11, ch18 +0.06, ch24 -0.05, ch13 +0.04
# port3 -: unit J: ch3 ->-0.59, ch13 ->-0.52, ch18 ->+0.59, ch24 ->+0.47
# port4 +: nothing (maybe tiny ch3/ch24 -0.03)
# port4 -: unit K: ch14 +0.335 (->-0.037), ch34 +0.07
# port5 +/-: nothing at 0.8
# port6 +: small unit L: ch29 +0.105, ch2 -0.055, ch34 +0.06 (port0-family channels!)
# port6 -: same big unit C as port0- (ch0 -0.82, ch2 -0.60, ch29 +0.64, ch22 -0.39)
# port7 +: unit A fast (~15t): ch22 0.70 -> -0.37
# port7 -: A back up, SLOW (~100t at 0.8) when in S_A; ineffective in C state
# Sensor groups: alpha(p0/p6): ch0,ch2,ch29(,ch22); beta(p1): ch6,ch11,ch25,ch32; gamma(p2): ch20,ch26,ch31,ch34;
# delta(p3): ch3,ch13,ch18,ch24; eps(p4): ch14; A(p7): ch22. Constant-ish: 1,4,5,7,8,9,10,12,15,16,17,19,21,23,27,28,30,33,35
app/physim/theory.py (4,737 chars)
BASE = [0.155,0.79,-0.295,-0.095,-0.062,-0.797,-0.163,-0.692,0.938,-0.706,
        0.091,0.293,0.729,0.318,-0.375,0.951,-0.492,-0.644,-0.090,0.024,
        0.741,0.252,0.695,-0.338,-0.477,-0.098,-0.252,0.091,-0.555,-0.774,
        0.231,-0.381,0.318,-0.582,0.05,-0.655]

# well deltas per family-state (channel: delta from BASE)
D = {
 'C':  {0:-1.005, 2:-0.315, 29:1.434, 22:-1.075},
 'B':  {0:-0.150, 29:0.054, 34:0.06},
 'L':  {29:0.104, 2:-0.075, 0:-0.025, 34:0.05},
 'F':  {6:-0.712, 11:-0.848, 25:0.588, 32:-0.643, 34:0.04},
 'E':  {6:-0.11, 11:-0.06, 24:-0.04, 3:-0.03},
 'E2': {6:-0.20, 11:-0.155, 25:0.075, 3:-0.03},
 'H':  {20:-1.441, 26:0.962, 31:1.366, 34:-0.84},
 'G':  {20:-0.05, 26:-0.06, 31:0.08, 34:-0.12},
 'J':  {3:-0.505, 13:-0.833, 18:0.685, 24:0.927},
 'I':  {3:-0.09, 13:0.03, 18:0.02, 24:-0.04},
 'K':  {14:0.35, 34:0.04},
 'A_mid': {22:-0.70},
 'A_dn':  {22:-1.075},
}
# during-drive sub-threshold gains (linearized): ch -> d(sensor)/d(u_port)
GAIN = {
 0: {0:0.10, 29:-0.16, 22:0.17, 2:0.05},
 1: {6:0.13, 11:0.11, 25:-0.09, 32:0.11},
 2: {20:0.17, 26:-0.16, 31:-0.18, 34:0.10},
 3: {13:0.15, 24:-0.15, 18:-0.08, 3:0.08},
 6: {0:0.14, 29:-0.28, 2:0.12, 22:0.20},
}

def init(y_history):
    st = {'wells': {'alpha':'S0','beta':'S0','gamma':'S0','delta':'S0','eps':'S0','A':'up'},
          'cnt': {k:0.0 for k in ['a0p','a6p','a1p','a2p','a3p','a4n','a4p','a7']},
          'y': [float(v) for v in (y_history[-1] if len(y_history)>0 else BASE)],
          'a7max':0.0}
    return st

def step(state, a):
    a = [float(x) for x in a]
    w = state['wells']; c = state['cnt']
    u0,u1,u2,u3,u4,u5,u6,u7 = a[:8]
    # --- alpha family ---
    drv = u0 + u6 + 0.05*u5
    c['a0p'] = c['a0p']+1 if u0 >= 0.48 else 0.0
    c['a6p'] = c['a6p']+1 if u6 >= 0.7 else 0.0
    if w['alpha'] != 'C':
        if drv <= -0.63:
            c['aC'] = c.get('aC',0)+1
            if c['aC'] >= 12: w['alpha']='C'
        else: c['aC']=0
        if w['alpha']!='C':
            if c['a0p'] >= 110: w['alpha']='B'
            elif c['a6p'] >= 130 and w['alpha']=='S0': w['alpha']='L'
    # --- beta ---
    if w['beta'] != 'F':
        if u1 <= -0.62:
            c['bF'] = c.get('bF',0)+1
            if c['bF'] >= 12: w['beta']='F'
        else: c['bF']=0
        c['a1p'] = c['a1p']+1 if u1 >= 0.55 else 0.0
        if w['beta']!='F' and c['a1p'] >= 130:
            w['beta'] = 'E2' if u1 >= 0.9 else 'E'
    # --- gamma ---
    if w['gamma'] != 'H':
        if u2 <= -0.62:
            c['gH'] = c.get('gH',0)+1
            if c['gH'] >= 12: w['gamma']='H'
        else: c['gH']=0
        c['a2p'] = c['a2p']+1 if u2 >= 0.55 else 0.0
        if w['gamma']!='H' and c['a2p'] >= 130: w['gamma']='G'
    # --- delta ---
    if w['delta'] != 'J':
        if u3 <= -0.62:
            c['dJ'] = c.get('dJ',0)+1
            if c['dJ'] >= 12: w['delta']='J'
        else: c['dJ']=0
        c['a3p'] = c['a3p']+1 if u3 >= 0.45 else 0.0
        if w['delta']!='J' and c['a3p'] >= 130: w['delta']='I'
    # --- eps (K, reversible) ---
    c['a4n'] = c['a4n']+1 if u4 <= -0.28 else 0.0
    c['a4p'] = c['a4p']+1 if u4 >= 0.45 else 0.0
    if c['a4n'] >= 90: w['eps']='K'
    if c['a4p'] >= 60: w['eps']='S0'
    # --- A (ch22) ---
    if w['alpha']=='C':
        w['A']='dn'
    elif w['A']=='up':
        if abs(u7) >= 0.14:
            c['a7'] += 1
            state['a7max'] = max(state['a7max'], abs(u7))
            if c['a7'] >= 30:
                w['A'] = 'dn' if (state['a7max']>=0.35 or c['a7']>=90) else 'mid'
        else:
            c['a7'] = 0
    elif w['A']=='mid':
        if abs(u7)>=0.25:
            c['a7'] += 1
            if c['a7']>=60: w['A']='dn'
        else: c['a7']=0
    # --- target sensor vector ---
    t = list(BASE)
    def add(dd):
        for k,v in dd.items(): t[k]+=v
    if w['alpha']=='C': add(D['C'])
    elif w['alpha']=='B': add(D['B'])
    elif w['alpha']=='L': add(D['L'])
    if w['beta']=='F': add(D['F'])
    elif w['beta']=='E': add(D['E'])
    elif w['beta']=='E2': add(D['E2'])
    if w['gamma']=='H': add(D['H'])
    elif w['gamma']=='G': add(D['G'])
    if w['delta']=='J': add(D['J'])
    elif w['delta']=='I': add(D['I'])
    if w['eps']=='K': add(D['K'])
    if w['A']=='dn' and w['alpha']!='C': add(D['A_dn'])
    elif w['A']=='mid': add(D['A_mid'])
    # sub-threshold drive shifts (only when family not in deep well)
    for p,u in ((0,u0),(1,u1),(2,u2),(3,u3),(6,u6)):
        if abs(u)>1e-9:
            for k,g in GAIN[p].items():
                t[k] += g*u*0.5   # saturating: measured shifts ~ half-linear
    # relax y toward target, tau ~ 6 ticks
    y = state['y']
    for i in range(36):
        y[i] += (t[i]-y[i])*0.16
    state['y']=y
    return state, list(y)

Preparation contracts

idchannelbandsuccessreleased finals
10020[-1.05, -0.35]100%-0.72, -0.70, -0.68, -0.72
10129[+0.27, +1.03]100%+0.66, +0.65, +0.64, +0.65
10231[+0.62, +1.33]100%+0.97, +0.98, +0.99, +0.98
10322[-0.67, -0.10]100%-0.38, -0.39, -0.37, -0.39

Executable theory

accuracy 0.930 · per-stratum {'S1': 0.99, 'S2': 0.98, 'S3': 0.79, 'S4': 0.95} · 4,266 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.2960.1770.00.969
1S1+0.1600.3140.00.978
2S1-0.3800.2970.00.981
3S1-0.3860.2970.00.998
4S2-0.3780.2970.10.925
5S2-0.0920.2010.00.988
6S2-0.0970.2170.10.941
7S2+0.6860.2380.00.985
8S3-0.6010.2421.10.340
9S3+0.0880.2600.00.956
10S3-0.3490.2970.10.896
11S3-0.3710.1420.00.975
12S4-0.6880.3170.20.809
13S4-0.2310.2430.10.923
14S4+0.9510.2920.00.998
15S4-0.7730.3170.00.964
Verbatim log (386 entries)
physim.status({})
I'll start by checking the interface and budget, then run initial probing experiments.
physim.status({})
I'll start by checking the interface and budget, then run initial probing experiments.
{"budget_left": 150000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 149700}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 5, 8, 15, 29], "series": true, "max_numbers": 360})
{"ticks_run": 400, "budget_left": 149300}
physim.run({"segments": [{"t": 150, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 149150}
physim.run({"segments": [{"t": 150, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 149000}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0.8, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148850}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148700}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0.8, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148550}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0.8, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0.8, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148400}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148250}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 148100}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 3, 22, 24, 29, 31], "series": true, "max_numbers": 360})
{"ticks_run": 600, "budget_left": 147500}
physim.reset({})
{"budget_left": 147300}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 147200}
physim.reset({})
Fresh draw #2 matches draw #1's baseline exactly — fresh draws may all start in the same canonical state. Checking with two more resets.
{"budget_left": 147000}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 146900}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}], "channels": [22, 0, 2, 9, 17, 33], "series": true})
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}], "channels": [22, 0, 2, 9, 17, 33], "series": true})
{"ticks_run": 120, "budget_left": 146780}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 146660}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22, 0, 3, 31], "series": true})
{"ticks_run": 240, "budget_left": 146420}
physim.run({"segments": [{"t": 150, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 146270}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 146120}
physim.run({"segments": [{"t": 200, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 29, 34], "series": true})
{"ticks_run": 350, "budget_left": 145770}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 60, "budget_left": 145710}
physim.run({"segments": [{"t": 150, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34], "series": true})
{"ticks_run": 250, "budget_left": 145460}
physim.reset({})
Deep attractor — port0+0.8 doesn't restore. Resetting and continuing the ±0.8 scan for ports 1–6.
{"budget_left": 145260}
physim.run({"segments": [{"t": 150, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 145110}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144960}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 144760}
physim.run({"segments": [{"t": 200, "u": [0, -0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 144560}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 144410}
physim.reset({})
{"budget_left": 144210}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0.8, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 143910}
physim.run({"segments": [{"t": 150, "u": [0, 0, -0.8, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 143610}
physim.reset({})
{"budget_left": 143410}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 143110}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -0.8, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -0.8, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 142810}
physim.reset({})
{"budget_left": 142610}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0.8, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 142310}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, -0.8, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 142010}
physim.reset({})
{"budget_left": 141810}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0.8, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 141510}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, -0.8, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 141210}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 140910}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, -0.8, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 140610}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 300, "budget_left": 140310}
physim.reset({})
{"budget_left": 140110}
physim.run({"segments": [{"t": 100, "u": [-0.2, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 140010}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 60, "budget_left": 139950}
physim.run({"segments": [{"t": 100, "u": [-0.4, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 100, "budget_left": 139850}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 60, "budget_left": 139790}
physim.run({"segments": [{"t": 100, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34], "series": true})
{"ticks_run": 100, "budget_left": 139690}
physim.run({"segments": [{"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 80, "budget_left": 139610}
physim.run({"segments": [{"t": 100, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 180, "budget_left": 139430}
physim.reset({})
{"budget_left": 139230}
physim.run({"segments": [{"t": 120, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
physim.run({"segments": [{"t": 120, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 220, "budget_left": 139010}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 200, "budget_left": 138810}
physim.run({"segments": [{"t": 150, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 300, "budget_left": 138510}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 150, "budget_left": 138360}
physim.reset({})
{"budget_left": 138160}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0.3]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22, 0, 29]})
{"ticks_run": 180, "budget_left": 137980}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 310, "budget_left": 137670}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22], "series": true})
{"ticks_run": 360, "budget_left": 137310}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, -0.4]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22], "series": true})
{"ticks_run": 210, "budget_left": 137100}
physim.reset({})
−0.4 doesn't unflip either; the down-state is deep. Testing from canonical: lower positive threshold, then −0.8 from the up-state.
{"budget_left": 136900}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0.15]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0.15]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 160, "budget_left": 136740}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22, 0, 2, 29]})
{"ticks_run": 230, "budget_left": 136510}
physim.reset({})
{"budget_left": 136310}
physim.run({"segments": [{"t": 120, "u": [0, -0.3, 0, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 190, "budget_left": 136120}
physim.run({"segments": [{"t": 120, "u": [0, -0.5, 0, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 190, "budget_left": 135930}
physim.run({"segments": [{"t": 120, "u": [0, -0.65, 0, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 190, "budget_left": 135740}
physim.reset({})
{"budget_left": 135540}
physim.run({"segments": [{"t": 120, "u": [0, 0.4, 0, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 240, "budget_left": 135300}
physim.run({"segments": [{"t": 150, "u": [0, 0.6, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32, 3, 24]})
{"ticks_run": 300, "budget_left": 135000}
physim.reset({})
{"budget_left": 134800}
physim.run({"segments": [{"t": 120, "u": [0, 0, -0.5, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
physim.run({"segments": [{"t": 120, "u": [0, 0, -0.5, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 190, "budget_left": 134610}
physim.run({"segments": [{"t": 120, "u": [0, 0, -0.65, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 190, "budget_left": 134420}
physim.reset({})
{"budget_left": 134220}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0.4, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 270, "budget_left": 133950}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0.6, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 300, "budget_left": 133650}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 13, 18, 24]})
G flipped at 0.6 (threshold (0.4,0.6]). Port 3 staircase next — its channels are independent of G's, so no reset needed.
{"ticks_run": 190, "budget_left": 133460}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, -0.65, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 13, 18, 24]})
{"ticks_run": 190, "budget_left": 133270}
physim.reset({})
{"budget_left": 133070}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0.5, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 13, 18, 24]})
{"ticks_run": 300, "budget_left": 132770}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -0.5, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 34]})
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -0.5, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 34]})
{"ticks_run": 190, "budget_left": 132580}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0.8, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 34]})
{"ticks_run": 220, "budget_left": 132360}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, -0.3, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 34]})
{"ticks_run": 190, "budget_left": 132170}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0.8, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 120, "u": [0, 0, 0, 0, -0.15, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels)
{"ticks_run": 390, "budget_left": 131780}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1.0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 131530}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 200, "budget_left": 131330}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, -1, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 131080}
physim.reset({})
{"budget_left": 130880}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, -0.5, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 190, "budget_left": 130690}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, -0.65, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 190, "budget_left": 130500}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 1, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
In C-state now. Testing whether port5 +1.0 (which pushes the α axis up) can restore canonical from the deep C-state.
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 1, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
In C-state now. Testing whether port5 +1.0 (which pushes the α axis up) can restore canonical from the deep C-state.
{"ticks_run": 300, "budget_left": 130200}
physim.reset({})
C-state is irreversibly deep (port5+1.0 can't restore). Now measuring sub-threshold during-drive response curves per port. Resetting to canonical.
{"budget_left": 130000}
physim.run({"segments": [{"t": 80, "u": [0.3, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 80, "budget_left": 129920}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0.3, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129800}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, -0.3, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129680}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0.3, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129560}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, -0.3, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129440}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0.3, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129320}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, -0.3, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, -0.3, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129200}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0.5, 0, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 129080}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0.3, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 128960}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, -0.3, 0]}], "channels": "all"})
{"ticks_run": 120, "budget_left": 128840}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0.1, 0, 0, 0]}], "channels": [14, 34, 3, 24]})
{"ticks_run": 120, "budget_left": 128720}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, -0.1, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 34]})
{"ticks_run": 180, "budget_left": 128540}
physim.reset({})
{"budget_left": 128340}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [34, 0, 22, 14, 6, 20, 3, 29]})
{"ticks_run": 100, "budget_left": 128240}
physim.run({"segments": [{"t": 120, "u": [-0.4, 0, 0, 0, 0, 0, -0.4, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 200, "budget_left": 128040}
physim.reset({})
Inputs on the same axis add. Testing pulse-duration threshold for the C flip.
{"budget_left": 127840}
physim.run({"segments": [{"t": 20, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
physim.run({"segments": [{"t": 20, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 120, "budget_left": 127720}
physim.reset({})
{"budget_left": 127520}
physim.run({"segments": [{"t": 8, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 108, "budget_left": 127412}
physim.run({"segments": [{"t": 400, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29]})
{"ticks_run": 480, "budget_left": 126932}
physim.run({"segments": [{"t": 50, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 34, 22, 29]})
{"ticks_run": 250, "budget_left": 126682}
physim.run({"segments": [{"t": 80, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 34, 22, 29]})
{"ticks_run": 330, "budget_left": 126352}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 60, "budget_left": 126292}
physim.reset({})
{"budget_left": 126092}
physim.run({"segments": [{"t": 100, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0,)
{"ticks_run": 350, "budget_left": 125742}
physim.run({"segments": [{"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 80, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 110, "budget_left": 125632}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, -0.3, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0.3, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": )
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, -0.3, 0, 0, 0]}, {"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, 0, 0, 0, 0.3, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": )
{"ticks_run": 240, "budget_left": 125392}
physim.run({"segments": [{"t": 80, "u": [0, 0, 0, 0, 0.5, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14]})
{"ticks_run": 140, "budget_left": 125252}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, -0.4, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 18, 24, 3], "series": true, "max_numbers": 360})
{"ticks_run": 110, "budget_left": 125142}
physim.run({"segments": [{"t": 150, "u": [0, 1, 0, 1, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32, 3, 13, 18, 24]})
{"ticks_run": 250, "budget_left": 124892}
physim.reset({})
{"budget_left": 124692}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 124392}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0.3]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 350, "budget_left": 124042}
physim.run({"segments": [{"t": 60, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 360, "budget_left": 123682}
physim.reset({})
{"budget_left": 123482}
physim.run({"segments": [{"t": 60, "u": [0, -0.8, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 360, "budget_left": 123122}
physim.run({"segments": [{"t": 60, "u": [0, 0, -0.8, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 60, "u": [0, 0, -0.8, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 360, "budget_left": 122762}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, -0.8, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 360, "budget_left": 122402}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, -0.4, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 360, "budget_left": 122042}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, -0.4, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 34, 3, 24, 29]})
{"ticks_run": 450, "budget_left": 121592}
physim.reset({})
physim.status({})
{"budget_left": 121592, "phase": "explore"}
physim.reset({})
{"budget_left": 121392}
physim.run({"segments": [{"t": 200, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 600, "budget_left": 120792}
physim.reset({})
{"budget_left": 120592}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 450, "budget_left": 120142}
physim.run({"segments": [{"t": 60, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34, 26]})
Surprise: from a truly clean state, port5 +1.0 does nothing — the earlier "M" state must come from brief port0+ pulses. Confirming that cleanly.
physim.run({"segments": [{"t": 60, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34, 26]})
Surprise: from a truly clean state, port5 +1.0 does nothing — the earlier "M" state must come from brief port0+ pulses. Confirming that cleanly.
{"ticks_run": 310, "budget_left": 119832}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0.3]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 100, "budget_left": 119732}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22], "series": true})
{"ticks_run": 300, "budget_left": 119432}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 180, "budget_left": 119252}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 180, "budget_left": 119072}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 180, "budget_left": 118892}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, 0, 0, 0, 0, -0.8]}, {"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22]})
{"ticks_run": 180, "budget_left": 118712}
physim.reset({})
{"budget_left": 118512}
physim.run({"segments": [{"t": 120, "u": [0, -0.6, 0, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [11, 25, 32, 6]})
{"ticks_run": 190, "budget_left": 118322}
physim.run({"segments": [{"t": 120, "u": [0, 0, -0.6, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
physim.run({"segments": [{"t": 120, "u": [0, 0, -0.6, 0, 0, 0, 0, 0]}, {"t": 70, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 190, "budget_left": 118132}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34, 11, 32]})
{"ticks_run": 150, "budget_left": 117982}
physim.run({"segments": [{"t": 120, "u": [0, 0, 0, -0.6, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 18, 24, 3]})
{"ticks_run": 220, "budget_left": 117762}
physim.run({"segments": [{"t": 80, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 80, "u": [0, -0.8, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels)
{"ticks_run": 460, "budget_left": 117302}
physim.reset({})
{"budget_left": 117102}
physim.run({"segments": [{"t": 100, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 100, "budget_left": 117002}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [-0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 160, "budget_left": 116842}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0.5, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 160, "budget_left": 116682}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, -0.5, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 160, "budget_left": 116522}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0.5, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 160, "budget_left": 116362}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, -0.5, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, -0.5, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 160, "budget_left": 116202}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0.5, 0, 0, 0, 0]}], "channels": [3, 13, 18, 24]})
{"ticks_run": 160, "budget_left": 116042}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}], "channels": [3, 13, 18, 24]})
{"ticks_run": 160, "budget_left": 115882}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0.5, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 160, "budget_left": 115722}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, -0.5, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 160, "budget_left": 115562}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 22, 29, 34]})
{"ticks_run": 160, "budget_left": 115402}
physim.run({"segments": [{"t": 100, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
{"ticks_run": 100, "budget_left": 115302}
physim.run({"segments": [{"t": 100, "u": [0, 0, -1, 0, 0, 0, 0, 0]}], "channels": [20, 26, 31, 34]})
{"ticks_run": 100, "budget_left": 115202}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, -1, 0, 0, 0, 0]}], "channels": [3, 13, 18, 24]})
{"ticks_run": 100, "budget_left": 115102}
physim.run({"segments": [{"t": 120, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 11, 25, 32]})
During-drive ≈ attractor values (no direct feedthrough). Testing reverse transitions: strong positive after strong negative (F→? via port1 +1.0).
{"ticks_run": 270, "budget_left": 114832}
Now building the executable theory (init/step simulator) for the bonus, testing it locally first.
Simulator reproduces all key behaviors. Submitting the theory, then requesting contracts.
physim.submit_theory({"code": "BASE = [0.155,0.79,-0.295,-0.095,-0.062,-0.797,-0.163,-0.692,0.938,-0.706,\n        0.091,0.293,0.729,0.318,-0.375,0.951,-0.492,-0.644,-0.090,0.024,\n        0.741,0.252,0.695,-0.338,-0.477,)
physim.ready({})
physim.status({})
physim.status({})
physim.status({})
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": -0.302, "low": -0.365, "high": -0.24}, {"id": 1, "mean": 0.153, "low": 0.095, "high": 0.21}, {"id": 2, "mean": -0.386, "low": -0.44, "high": -0.33}, {"id": 3, "mean": -0)
physim.answer({"answers": [{"id": 0, "mean": -0.302, "low": -0.365, "high": -0.24}, {"id": 1, "mean": 0.153, "low": 0.095, "high": 0.21}, {"id": 2, "mean": -0.386, "low": -0.44, "high": -0.33}, {"id": 3, "mean": -0)
{"received": 16}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # Goal: ch20 in [-1.046, -0.348] after free run.\n    # Drive port2 strongly negative -> absorbing H attractor (ch20 ~ -0.69 at rest).\n    s = mem.get)
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Goal: ch29 in [0.268, 1.028] after free run.\n    # Drive port0 strongly negative -> absorbing C attractor (ch29 ~ +0.65 at rest).\n    s = mem.get(')
physim.answer_prep({"id": 102, "code": "def policy(t, y, mem):\n    # Goal: ch31 in [0.621, 1.333] after free run.\n    # Drive port2 strongly negative -> absorbing H attractor (ch31 ~ +0.985 at rest).\n    s = mem.get()
physim.answer_prep({"id": 103, "code": "def policy(t, y, mem):\n    # Goal: ch22 in [-0.666, -0.096] after free run.\n    # Sustained positive port7 knocks ch22 from its canonical up-well (0.70)\n    # into the deep dow)
Investigation complete — all 16 prediction contracts answered, all 4 preparation policies submitted, and an executable theory recorded for the bonus.

## What the system turned out to be

The hidden system is a **multistable attractor network**: roughly 6 independent "families" of hidden multi-well units, each coupled to specific input ports and read out (noise sd ≈0.05, no direct input feedthroug

anthropic--claude-opus-5--claude_code — C1 (2 rollouts, mean acc 0.955)

anthropic/claude-opus-5 · C1 seed 0 · tier tools · accuracy 0.96 · preparation 1.00 · theory 0.96 · budget 84%

S1=0.97 · S2=0.97 · S3=0.96 · S4=0.95 · coverage 1.00 · 439 nodes

Narrative experiment log

timeline
  1. 2× free run (800 ticks; 300 ticks, all inputs 0).
  2. Reset to fresh initial conditions (−200 ticks).
  3. Free run (500 ticks; 500 ticks, all inputs 0).
  4. 5× single-port probe (7,700 ticks; port 0 at +0.12, 200t).
  5. 2× free run (1,830 ticks; 1800 ticks, all inputs 0).
  6. Single-port probe (2,000 ticks; port 0 at -0.12, 2000t) — ch27 -0.15→-0.45.
  7. Reset to fresh initial conditions (−200 ticks).
  8. Free run (600 ticks; 600 ticks, all inputs 0).
  9. 2× single-port probe (3,200 ticks; port 1 at +0.12, 1600t).
  10. Free run (1,600 ticks; 1600 ticks, all inputs 0).
  11. 7× single-port probe (11,400 ticks; port 1 at -0.12, 1600t).
  12. Free run (1,200 ticks; 1200 ticks, all inputs 0).
  13. 4× single-port probe (11,800 ticks; port 4 at +0.12, 2400t).
  14. Free run (1,000 ticks; 1000 ticks, all inputs 0).
  15. 3× single-port probe (7,200 ticks; port 6 at -0.12, 2400t) — ch22 -0.50→-0.34.
  16. 2× multi-port probe (4,800 ticks; ports [2, 4, 6] at +0.38, 2400t).
  17. Reset to fresh initial conditions (−200 ticks).
  18. 8× multi-port probe (11,000 ticks; ports [0, 1, 3, 5] at +0.07, 1900t).
  19. Free run (1,300 ticks; 1300 ticks, all inputs 0).
  20. 3× multi-port probe (3,900 ticks; ports [0, 1, 3, 5] at -0.15, 1300t) — ch20 +0.47→+0.17, ch3 -0.22→-0.43, ch24 -0.13→+0.05.
  21. Free run (1,300 ticks; 1300 ticks, all inputs 0).
  22. Reset to fresh initial conditions (−200 ticks).
  23. Free run (25 ticks; 25 ticks, all inputs 0).
  24. 9× multi-port probe (4,150 ticks; ports [0, 1, 3, 5] at +0.50, 150t).
  25. Reset to fresh initial conditions (−200 ticks).
  26. Reset to fresh initial conditions (−200 ticks).
  27. Multi-port probe (200 ticks; ports [0, 1, 3, 5] at -0.50, 200t).
  28. Reset to fresh initial conditions (−200 ticks).
  29. Free run (25 ticks; 25 ticks, all inputs 0).
  30. 3× multi-port probe (70 ticks; ports [0, 1, 3, 5] at -0.50, 20t) — ch22 -0.23→-0.52, ch28 +0.15→+0.41, ch21 +0.05→+0.29.
  31. Reset to fresh initial conditions (−200 ticks).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Multi-port probe (500 ticks; ports [0, 1, 3, 5] at +0.50, 500t).
  34. 2× free run (1,200 ticks; 200 ticks, all inputs 0).
  35. Reset to fresh initial conditions (−200 ticks).
  36. 5× multi-port probe (2,500 ticks; ports [0, 1, 3, 5] at +0.25, 200t) — ch6 +0.84→+0.32, ch17 -0.20→+0.24, ch22 +0.55→+0.14.
  37. Reset to fresh initial conditions (−200 ticks).
  38. 3× multi-port probe (4,000 ticks; ports [0, 1, 3, 5] at +0.12, 700t) — ch22 +0.60→+0.25, ch10 -0.22→-0.57, ch28 -0.01→+0.29.
  39. Reset to fresh initial conditions (−200 ticks).
  40. 9× drive → release (6,000 ticks; drive +0.50 for 150t, release 200t).
  41. Reset to fresh initial conditions (−200 ticks).
  42. 5× drive → release (1,400 ticks; drive -0.15 for 25t, release 200t).
  43. Free run (20 ticks; 20 ticks, all inputs 0).
  44. 3× drive → release (1,150 ticks; drive -0.35 for 100t, release 150t).
  45. Multi-port probe (60 ticks; ports [0, 1, 3] at +0.38, 60t).
  46. Reset to fresh initial conditions (−200 ticks).
  47. Drive → release (650 ticks; drive +0.38 for 500t, release 150t).
  48. Multi-port probe (100 ticks; ports [0, 1, 3] at -0.19, 100t).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Drive → release (320 ticks; drive -0.17 for 20t, release 300t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. 3× drive → release (1,340 ticks; drive -0.21 for 20t, release 400t).
  53. Reset to fresh initial conditions (−200 ticks).
  54. Drive → release (600 ticks; drive -0.37 for 200t, release 400t).
  55. Reset to fresh initial conditions (−200 ticks).
  56. Drive → release (600 ticks; drive -0.36 for 200t, release 400t).
  57. Reset to fresh initial conditions (−200 ticks).
  58. Drive → release (30 ticks; drive -0.30 for 20t, release 10t).
  59. 2× free run (60 ticks; 30 ticks, all inputs 0).
  60. Reset to fresh initial conditions (−200 ticks).
  61. Drive → release (3,000 ticks; drive +0.26 for 2800t, release 200t).
  62. Reset to fresh initial conditions (−200 ticks).
  63. Drive → release (6,200 ticks; drive +0.07 for 6000t, release 200t).
  64. 2× multi-port probe (6,500 ticks; ports [0, 1, 3, 5] at +0.50, 3500t).
  65. 4× drive → release (6,280 ticks; drive +0.50 for 2500t, release 300t).
  66. Reset to fresh initial conditions (−200 ticks).
  67. Drive → release (4,320 ticks; drive -0.30 for 4020t, release 300t).
  68. Reset to fresh initial conditions (−200 ticks).
  69. 2× drive → release (4,640 ticks; drive +0.38 for 2020t, release 300t).
  70. Reset to fresh initial conditions (−200 ticks).
  71. Drive → release (1,700 ticks; drive +0.38 for 1400t, release 300t).
  72. Reset to fresh initial conditions (−200 ticks).
  73. 3× free run (2,300 ticks; 600 ticks, all inputs 0).
  74. Drive → release (1,300 ticks; drive -0.12 for 1000t, release 300t) — ch20 +0.32→+0.09, ch3 -0.26→-0.43, ch35 -0.50→-0.34.
  75. Reset to fresh initial conditions (−200 ticks).
  76. Reset to fresh initial conditions (−200 ticks).
  77. Drive → release (2,000 ticks; drive +0.09 for 1600t, release 400t).
  78. Reset to fresh initial conditions (−200 ticks).
  79. Reset to fresh initial conditions (−200 ticks).
  80. Multi-port probe (2,100 ticks; ports [0, 1, 3, 5] at +0.24, 2100t).
  81. Reset to fresh initial conditions (−200 ticks).
  82. Drive → release (500 ticks; drive -0.24 for 200t, release 300t).
  83. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  84. Submitted 16 contract answers.
  85. Submitted preparation policy for contract 100 ("ch24 baseline (~-0.16) sits at the centre of the target band [-0.514, 0.187].").
  86. Submitted preparation policy for contract 101 ("Channel 7 is one of the 20 inert sensors: no input port moves it.").
  87. Submitted an executable theory (5,625 chars).

Agent-written files (its instruments & theories)

app/sim/notes.md (2,045 chars)
# Hidden system — final discovered structure

## Topology
- 36 sensors, 8 inputs. Per-tick noise sd ≈ 0.05; 20-tick tail mean → sem ≈ 0.011.
- `reset()` always returns to the SAME baseline state A (verified across ~10 draws).
- 4 independent 4-sensor cells; ports 2, 4, 6 inert; 20 of 36 sensors inert.
    cell0 ← port0 : ch 1, 17, 27, 33
    cell1 ← port1 (+ port7 at 0.095× gain) : ch 13, 21, 22, 28
    cell3 ← port3 : ch 0, 6, 10, 32
    cell5 ← port5 : ch 3, 20, 24, 35

## Mechanism (cells 0, 1, 3)
Positive and negative inputs do completely different things.

**Positive = slow progress along a line attractor.**
`dσ/dt = R(u)`, R(u) ≈ u^1.55 (measured table in model.py). At u=0 the state
FREEZES indefinitely — verified by holding σ=500 for 1200 ticks with no change.
Sensors trace a fixed 1-D curve F_ch(σ), saturating at an absorbing endpoint P
by σ ≈ 4000.

**Negative = a threshold TRIGGER, not a rate.**
- |u| < θ: no effect at all, ever (−0.6 for 200 ticks does nothing).
- |u| > θ for ≳13 ticks, and σ < ~850: the cell detaches and runs away
  *autonomously* to a distinct absorbing state T, completing ~40 ticks after the
  input stops. A 20-tick kick read while still driven looks almost unmoved, yet
  after release the cell is fully at T — that is the decisive evidence.
- σ > ~850: IMMUNE. Even u=−1 for 100 ticks does nothing.
- θ ≈ 0.615 (cell0), 0.685 (cell1), 0.625 (cell3), ±0.04 draw-to-draw jitter.
- Both P and T are absorbing; P ≠ T (they differ mainly on ch27, ch22, ch6).

**Readout:** `y = F_ch(σ) + u · d_ch(σ)`, feedthrough linear in u (checked at
u=−0.5 mid-path), largest mid-path and ~0 at both endpoints.

## cell5 is the exception
No fast trigger. Negative drive is a slow *rate* along a different path
(~2300 ticks at u=−1 to converge); ch35 is non-monotone on it, dipping to −0.50
before recovering to ~−0.38.

## Validation
Two held-out multi-stage protocols predicted before running:
mean |error| = 0.021, max 0.058 across all 16 active channels.

## Budget
150000 total, ~24000 unused at `ready()`.
app/sim/rates.md (1,377 chars)
# Rate function R_c(u)  (progress sigma advances; sigma units = ticks of u=+1)

Model: per cell c, scalar progress s_c, ds/dt = R_c(u_p) >= 0, R_c(0)=0.
BOTH signs of u advance s in the SAME direction. Path has a TERMINAL end
(negative endpoint); once there, no input moves it (verified: +1 for 300 ticks -> no change).

## Positive side (measured by driven reads, cells 0,1,3)
R(1.0)  = 1.00 (definition)
R(0.5)  ~ 0.35-0.40
R(0.25) ~ 0.16-0.26
R(0.15) > 0 (staircase showed motion)

## Negative side -- SHARP THRESHOLD, then very fast
cells 0 & 3:
  u=-0.3 , 100 ticks -> NO motion
  u=-0.5 , 100 ticks -> NO motion
  u=-0.7 , 100 ticks -> COMPLETE traversal to terminal
  u=-1.0 ,  20 ticks -> sigma ~ 150
  u=-1.0 ,  40 ticks -> sigma ~ 900-1000
  u=-1.0 ,  70 ticks -> terminal
cell 1:
  u=-0.7 , 100 ticks -> NO motion
  u=-0.85, 300 ticks -> terminal
  u=-1.0 ,  40 ticks -> well advanced;  70 ticks -> terminal
cell 5 (slowest, weird):
  u=-0.9 , 300 ticks -> only partial (ch3 -0.019->-0.125, ch35 -0.293->-0.476)
  u=-1.0 , 200 ticks -> almost nothing
  u=-1.0 , 1300 ticks -> terminal
  positive side: cell5 moves FASTER at |u|=0.15-0.5 than at 1.0 (non-monotone)

## Onset lag
u=-1 for 20 ticks gives sigma~150 but 40 ticks gives ~950 -> rate is not constant from t=0;
there is an onset lag / ramp of order 15-25 ticks (fast filter on u before it drives the rate).
app/.vf-claude/6e9990ca2784491b892f1b464fc723a7/.claude.json (389 chars)
{
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app/sim/data.py (406 chars)
import numpy as np
BASE_A = {  # zero-input attractor, avg of 4 obs
0:0.030,1:0.339,2:0.363,3:-0.019,4:-0.023,5:0.127,6:0.475,7:-0.612,8:-0.377,9:0.194,
10:-0.063,11:0.437,12:-0.427,13:0.507,14:-0.554,15:-0.288,16:-0.919,17:-0.248,18:0.593,
19:-0.623,20:0.450,21:-0.532,22:0.455,23:0.466,24:-0.160,25:-0.578,26:0.357,27:-0.267,
28:-0.442,29:0.041,30:-0.188,31:-0.342,32:-0.062,33:0.514,34:0.160,35:-0.293}
app/sim/frozen_pos.py (4,211 chars)
# FROZEN path: drive ports 0,1,3,5 at u=+1 for cumulative sigma ticks,
# then release 200 ticks at u=0, then read tail. sigma = cumulative +1 drive ticks.
CELLS = {0: [1, 17, 27, 33], 1: [13, 21, 22, 28], 3: [0, 6, 10, 32], 5: [3, 20, 24, 35]}

FROZEN = {
0:    {1: 0.339, 17:-0.248, 27:-0.267, 33: 0.514, 13: 0.507, 21:-0.532, 22: 0.455, 28:-0.442,
       0: 0.030,  6: 0.475, 10:-0.063, 32:-0.062,  3:-0.019, 20: 0.450, 24:-0.160, 35:-0.293},
150:  {1: 0.341, 17:-0.209, 27:-0.269, 33: 0.542, 13: 0.522, 21:-0.355, 22: 0.584, 28:-0.224,
       0:-0.008,  6: 0.551, 10:-0.133, 32:-0.092,  3:-0.027, 20: 0.444, 24:-0.130, 35:-0.250},
300:  {1: 0.360, 17:-0.119, 27:-0.221, 33: 0.555, 13: 0.395, 21:-0.187, 22: 0.583, 28: 0.008,
       0:-0.068,  6: 0.699, 10:-0.260, 32:-0.192,  3:-0.003, 20: 0.426, 24:-0.141, 35:-0.259},
500:  {1: 0.369, 17: 0.031, 27:-0.101, 33: 0.457, 13: 0.206, 21: 0.005, 22: 0.372, 28: 0.211,
       0:-0.059,  6: 0.685, 10:-0.487, 32:-0.314,  3:-0.007, 20: 0.409, 24:-0.155, 35:-0.219},
800:  {1: 0.230, 17: 0.427, 27: 0.183, 33: 0.063, 13: 0.052, 21: 0.176, 22: 0.081, 28: 0.371,
       0: 0.214,  6: 0.246, 10:-0.734, 32:-0.461,  3:-0.023, 20: 0.415, 24:-0.147, 35:-0.217},
1200: {1:-0.016, 17: 0.597, 27: 0.131, 33:-0.430, 13:-0.097, 21: 0.237, 22:-0.109, 28: 0.383,
       0: 0.542,  6:-0.207, 10:-0.757, 32:-0.483,  3:-0.001, 20: 0.426, 24:-0.140, 35:-0.220},
1800: {1:-0.102, 17: 0.599, 27:-0.082, 33:-0.549, 13:-0.121, 21: 0.280, 22:-0.246, 28: 0.393,
       0: 0.666,  6:-0.454, 10:-0.775, 32:-0.499,  3: 0.016, 20: 0.376, 24:-0.145, 35:-0.153},
2600: {1:-0.147, 17: 0.607, 27:-0.196, 33:-0.565, 13:-0.188, 21: 0.306, 22:-0.325, 28: 0.407,
       0: 0.706,  6:-0.534, 10:-0.767, 32:-0.506,  3: 0.018, 20: 0.371, 24:-0.092, 35:-0.111},
4000: {1:-0.128, 17: 0.597, 27:-0.227, 33:-0.575, 13:-0.204, 21: 0.314, 22:-0.357, 28: 0.416,
       0: 0.739,  6:-0.553, 10:-0.804, 32:-0.506,  3: 0.004, 20: 0.332, 24:-0.080, 35:-0.078},
}

# DRIVEN path (read while u=+1 still applied), same cumulative sigma
DRIVEN_P1 = {
0:    {1: 0.346, 17:-0.275, 27:-0.281, 33: 0.538, 13: 0.509, 21:-0.524, 22: 0.452, 28:-0.434,
       0: 0.060,  6: 0.445, 10:-0.044, 32:-0.051,  3:-0.010, 20: 0.426, 24:-0.154, 35:-0.272},
150:  {1: 0.416, 17:-0.334, 27:-0.209, 33: 0.693, 13: 0.616, 21:-0.462, 22: 0.709, 28:-0.275,
       0:-0.131,  6: 0.750, 10:-0.049, 32:-0.043,  3:-0.011, 20: 0.466, 24:-0.183, 35:-0.320},
300:  {1: 0.441, 17:-0.264, 27:-0.141, 33: 0.681, 13: 0.449, 21:-0.244, 22: 0.640, 28:-0.019,
       0:-0.216,  6: 0.894, 10:-0.201, 32:-0.170,  3:-0.008, 20: 0.463, 24:-0.153, 35:-0.309},
500:  {1: 0.451, 17:-0.040, 27:-0.000, 33: 0.601, 13: 0.211, 21: 0.006, 22: 0.416, 28: 0.234,
       0:-0.164,  6: 0.840, 10:-0.485, 32:-0.329,  3: 0.012, 20: 0.473, 24:-0.191, 35:-0.293},
800:  {1: 0.282, 17: 0.434, 27: 0.308, 33: 0.088, 13: 0.019, 21: 0.187, 22: 0.101, 28: 0.342,
       0: 0.237,  6: 0.250, 10:-0.733, 32:-0.464,  3:-0.006, 20: 0.464, 24:-0.160, 35:-0.296},
1200: {1:-0.035, 17: 0.571, 27: 0.240, 33:-0.463, 13:-0.073, 21: 0.294, 22:-0.120, 28: 0.374,
       0: 0.562,  6:-0.231, 10:-0.769, 32:-0.502,  3:-0.003, 20: 0.467, 24:-0.154, 35:-0.280},
1800: {1:-0.117, 17: 0.614, 27:-0.031, 33:-0.555, 13:-0.187, 21: 0.283, 22:-0.279, 28: 0.423,
       0: 0.679,  6:-0.475, 10:-0.777, 32:-0.497,  3: 0.011, 20: 0.444, 24:-0.119, 35:-0.214},
2600: {1:-0.141, 17: 0.601, 27:-0.167, 33:-0.566, 13:-0.211, 21: 0.312, 22:-0.332, 28: 0.413,
       0: 0.728,  6:-0.546, 10:-0.805, 32:-0.483,  3: 0.016, 20: 0.429, 24:-0.115, 35:-0.190},
4000: {1:-0.145, 17: 0.605, 27:-0.228, 33:-0.586, 13:-0.235, 21: 0.319, 22:-0.384, 28: 0.435,
       0: 0.768,  6:-0.604, 10:-0.767, 32:-0.486,  3: 0.019, 20: 0.406, 24:-0.101, 35:-0.152},
}

# TERMINAL state reached by negative drive (|u|>=threshold). Frozen, and it is a
# TRUE END OF PATH: 300 ticks of u=+1 applied there changed nothing.
TERMINAL = {1:-0.155, 17: 0.613, 27:-0.480, 33:-0.582,
            13:-0.257, 21: 0.305, 22:-0.515, 28: 0.414,
            0: 0.760,  6:-0.639, 10:-0.786, 32:-0.497}
# cell5 terminal (from -1 staircase, 1300 ticks): 3:-0.427, 20:0.146, 24:0.053, 35:-0.424
TERMINAL5 = {3: -0.427, 20: 0.146, 24: 0.053, 35: -0.424}
app/sim/model.py (9,513 chars)
"""Fitted model of the hidden system.

STRUCTURE
---------
36 sensors, 8 input ports. Measurement noise sd ~0.05/tick; tail mean over 20 ticks -> sem ~0.011.
Fresh draw (reset) always starts at the SAME baseline state A.

4 active cells, mutually independent, 4 sensors each:
    cell0 <- port0 : ch 1, 17, 27, 33
    cell1 <- port1 (+ port7 at ~0.095x strength) : ch 13, 21, 22, 28
    cell3 <- port3 : ch 0, 6, 10, 32
    cell5 <- port5 : ch 3, 20, 24, 35
Ports 2,4,6 inert. The other 20 sensors are inert, always at baseline A.

PER-CELL DYNAMICS (cells 0,1,3)
-------------------------------
State = (sigma, branch).  branch in {"P" (normal path), "T" (terminal)}.
sigma = progress, measured in equivalent ticks of u=+1.

 * u > 0 : d sigma/dt = R(u) = u**1.55.  Frozen (d sigma/dt = 0) at u = 0.
 * u = 0 : nothing moves. The path is a LINE ATTRACTOR - the state stays put
           indefinitely (verified: held 1200 ticks with no change).
 * u < 0 : NOT a rate. It is a TRIGGER.
      - if |u| < theta_c              -> nothing at all, ever (tested 200 ticks)
      - if |u| > theta_c for >~13 ticks AND sigma < ~850
                                      -> cell runs away autonomously to state T,
                                         completing ~40 ticks after the input ends.
      - if sigma > ~850               -> IMMUNE. Even u=-1 for 100 ticks does nothing.
      thetas: cell0 0.62, cell1 0.705, cell3 0.60  (bracketed to +-0.03)
 * Once on branch T, the cell is absorbing: no input of any kind moves it.
 * The positive asymptote P (sigma >~ 4000) is ALSO absorbing: u=-1 for 60 ticks
   there does nothing. P != T (they differ mainly on ch27, ch22, ch6).

SENSOR READOUT
--------------
   y_ch = F_ch(sigma)  +  u_port * d_ch(sigma)
where F is the frozen path table and d = DRIVEN_P1 - FROZEN is the (approximately
linear in u) feedthrough. Verified linear at u=-0.5 mid-path.

CELL5
-----
Different: no fast trigger. Positive drive follows a shallow path saturating by
sigma~4000. Negative drive is a slow RATE along a *different* path (~2300 ticks at
u=-1 to converge). ch35 is non-monotone on the negative path (dips to -0.50 then
recovers to ~-0.38).
"""

CELLS = {0: [1, 17, 27, 33], 1: [13, 21, 22, 28], 3: [0, 6, 10, 32], 5: [3, 20, 24, 35]}
PORT_OF_CELL = {0: 0, 1: 1, 3: 3, 5: 5}
THETA = {0: 0.615, 1: 0.685, 3: 0.625}  # +-0.04 draw-to-draw jitter near threshold
SIGMA_IMMUNE = 850.0
TRIG_TICKS = 13.0            # ticks above threshold needed to fire
PORT7_GAIN = 0.095           # port7 drives cell1 forward at this fraction

BASE_A = {
    0: 0.030, 1: 0.339, 2: 0.363, 3: -0.019, 4: -0.023, 5: 0.127, 6: 0.475, 7: -0.612,
    8: -0.377, 9: 0.194, 10: -0.063, 11: 0.437, 12: -0.427, 13: 0.507, 14: -0.554,
    15: -0.288, 16: -0.919, 17: -0.248, 18: 0.593, 19: -0.623, 20: 0.450, 21: -0.532,
    22: 0.455, 23: 0.466, 24: -0.160, 25: -0.578, 26: 0.357, 27: -0.267, 28: -0.442,
    29: 0.041, 30: -0.188, 31: -0.342, 32: -0.062, 33: 0.514, 34: 0.160, 35: -0.293}

SIG = [0, 150, 300, 500, 800, 1200, 1800, 2600, 4000, 9500]

# frozen path F_ch(sigma)
F = {
 1:  [0.339, 0.341, 0.360, 0.369, 0.230, -0.016, -0.102, -0.147, -0.128, -0.136],
 17: [-0.248, -0.209, -0.119, 0.031, 0.427, 0.597, 0.599, 0.607, 0.597, 0.619],
 27: [-0.267, -0.269, -0.221, -0.101, 0.183, 0.131, -0.082, -0.196, -0.227, -0.261],
 33: [0.514, 0.542, 0.555, 0.457, 0.063, -0.430, -0.549, -0.565, -0.575, -0.583],
 13: [0.507, 0.522, 0.395, 0.206, 0.052, -0.097, -0.121, -0.188, -0.204, -0.219],
 21: [-0.532, -0.355, -0.187, 0.005, 0.176, 0.237, 0.280, 0.306, 0.314, 0.298],
 22: [0.455, 0.584, 0.583, 0.372, 0.081, -0.109, -0.246, -0.325, -0.357, -0.368],
 28: [-0.442, -0.224, 0.008, 0.211, 0.371, 0.383, 0.393, 0.407, 0.416, 0.404],
 0:  [0.030, -0.008, -0.068, -0.059, 0.214, 0.542, 0.666, 0.706, 0.739, 0.770],
 6:  [0.475, 0.551, 0.699, 0.685, 0.246, -0.207, -0.454, -0.534, -0.553, -0.592],
 10: [-0.063, -0.133, -0.260, -0.487, -0.734, -0.757, -0.775, -0.767, -0.804, -0.769],
 32: [-0.062, -0.092, -0.192, -0.314, -0.461, -0.483, -0.499, -0.506, -0.506, -0.500],
 3:  [-0.019, -0.027, -0.003, -0.007, -0.023, -0.001, 0.016, 0.018, 0.004, -0.007],
 20: [0.450, 0.444, 0.426, 0.409, 0.415, 0.426, 0.376, 0.371, 0.332, 0.357],
 24: [-0.160, -0.130, -0.141, -0.155, -0.147, -0.140, -0.145, -0.092, -0.080, -0.055],
 35: [-0.293, -0.250, -0.259, -0.219, -0.217, -0.220, -0.153, -0.111, -0.078, -0.098],
}
# feedthrough coefficient d_ch(sigma) = DRIVEN(u=+1) - FROZEN, at the same sigma
D = {
 1:  [0.007, 0.075, 0.081, 0.082, 0.052, -0.019, -0.015, 0.006, -0.017, -0.017],
 17: [-0.027, -0.125, -0.145, -0.071, 0.007, -0.026, 0.015, -0.006, 0.008, 0.008],
 27: [-0.014, 0.060, 0.080, 0.101, 0.125, 0.109, 0.051, 0.029, -0.001, -0.001],
 33: [0.024, 0.151, 0.126, 0.144, 0.025, -0.033, -0.006, -0.001, -0.011, -0.011],
 13: [0.002, 0.094, 0.054, 0.005, -0.033, 0.024, -0.066, -0.023, -0.031, -0.031],
 21: [0.008, -0.107, -0.057, 0.001, 0.011, 0.057, 0.003, 0.006, 0.005, 0.005],
 22: [-0.003, 0.125, 0.057, 0.044, 0.020, -0.011, -0.033, -0.007, -0.027, -0.027],
 28: [0.008, -0.051, -0.027, 0.023, -0.029, -0.009, 0.030, 0.006, 0.019, 0.019],
 0:  [0.030, -0.123, -0.148, -0.105, 0.023, 0.020, 0.013, 0.022, 0.029, 0.029],
 6:  [-0.030, 0.199, 0.195, 0.155, 0.004, -0.024, -0.021, -0.012, -0.051, -0.051],
 10: [0.019, 0.084, 0.059, 0.002, 0.001, -0.012, -0.002, -0.038, 0.037, 0.037],
 32: [0.011, 0.049, 0.022, -0.015, -0.003, -0.019, 0.002, 0.023, 0.020, 0.020],
 3:  [0.009, 0.016, -0.005, 0.019, 0.017, -0.002, -0.005, -0.002, 0.015, 0.015],
 20: [-0.024, 0.022, 0.037, 0.064, 0.049, 0.041, 0.068, 0.058, 0.074, 0.074],
 24: [0.006, -0.053, -0.012, -0.036, -0.013, -0.014, 0.026, -0.023, -0.021, -0.021],
 35: [0.021, -0.070, -0.050, -0.074, -0.079, -0.060, -0.061, -0.079, -0.074, -0.074],
}

# absorbing terminal state T (reached by a negative trigger)
T_STATE = {1: -0.148, 17: 0.607, 27: -0.481, 33: -0.578,
           13: -0.257, 21: 0.307, 22: -0.520, 28: 0.412,
           0: 0.762, 6: -0.636, 10: -0.782, 32: -0.496}

# cell5 negative path, indexed by tau = ticks of u=-1
TAU5 = [0, 300, 600, 1300, 2300, 5000]
N5 = {
 3:  [-0.019, -0.068, -0.142, -0.261, -0.433, -0.440],
 20: [0.450, 0.460, 0.432, 0.318, 0.095, 0.100],
 24: [-0.160, -0.192, -0.199, -0.132, 0.031, 0.040],
 35: [-0.293, -0.397, -0.480, -0.501, -0.338, -0.360],
}

ACTIVE = set()
for v in CELLS.values():
    ACTIVE.update(v)


def interp(xs, ys, x):
    if x <= xs[0]:
        return float(ys[0])
    if x >= xs[-1]:
        return float(ys[-1])
    for i in range(len(xs) - 1):
        if xs[i] <= x <= xs[i + 1]:
            f = (x - xs[i]) / (xs[i + 1] - xs[i])
            return float(ys[i] + f * (ys[i + 1] - ys[i]))
    return float(ys[-1])


# measured progress rate vs amplitude (cells 0,1,3), sigma-units per tick
RU = [0.0, 0.1, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0]
RV = [0.0, 0.040, 0.072, 0.095, 0.12, 0.17, 0.28, 0.35, 0.47, 0.62, 0.72, 0.87, 1.0]


def R_pos(u):
    """progress rate (sigma units per tick) for u > 0"""
    if u <= 0:
        return 0.0
    return interp(RU, RV, u)


class Cell:
    """cells 0,1,3"""
    def __init__(self, cid):
        self.cid = cid
        self.sigma = 0.0
        self.branch = "P"
        self.neg_ticks = 0.0     # consecutive ticks with u below -theta

    def step(self, u, u7=0.0):
        if self.branch == "T":
            return
        drive = R_pos(u) + (PORT7_GAIN * R_pos(u7) if self.cid == 1 else 0.0)
        if u < -THETA[self.cid] and self.sigma < SIGMA_IMMUNE:
            self.neg_ticks += 1
            if self.neg_ticks >= TRIG_TICKS:
                self.branch = "T"
                return
        else:
            self.neg_ticks = 0.0
        self.sigma += drive

    def read(self, ch, u):
        if self.branch == "T":
            return T_STATE[ch]
        return interp(SIG, F[ch], self.sigma) + u * interp(SIG, D[ch], self.sigma)


class Cell5:
    """cell5: positive progress sigma, negative progress tau; separate paths"""
    def __init__(self):
        self.sigma = 0.0
        self.tau = 0.0

    def step(self, u):
        if u > 0:
            self.sigma += R_pos(u)
        elif u < 0:
            # slow rate; roughly linear in |u| above ~0.5, negligible below
            self.tau += max(0.0, (abs(u) - 0.45) / 0.55)

    def read(self, ch, u):
        if self.tau > 30:
            base = interp(TAU5, N5[ch], self.tau)
        else:
            base = interp(SIG, F[ch], self.sigma)
        return base + u * interp(SIG, D[ch], min(self.sigma, 9500))


class Sim:
    def __init__(self):
        self.cells = {c: Cell(c) for c in (0, 1, 3)}
        self.c5 = Cell5()

    def run(self, segments):
        """segments: list of (ticks, u_vector[8])"""
        for t, u in segments:
            for _ in range(int(t)):
                self.cells[0].step(u[0])
                self.cells[1].step(u[1], u[7])
                self.cells[3].step(u[3])
                self.c5.step(u[5])
            self.last_u = u
        return self.readout(self.last_u)

    def readout(self, u):
        y = dict(BASE_A)
        for ch in CELLS[0]:
            y[ch] = self.cells[0].read(ch, u[0])
        for ch in CELLS[1]:
            y[ch] = self.cells[1].read(ch, u[1])
        for ch in CELLS[3]:
            y[ch] = self.cells[3].read(ch, u[3])
        for ch in CELLS[5]:
            y[ch] = self.c5.read(ch, u[5])
        return y


def predict(segments, ch):
    s = Sim()
    y = s.run(segments)
    return y[ch]
app/sim/pos_path.py (2,026 chars)
# All 4 active ports driven at u=+1 from fresh state A. Cumulative ticks -> tail means.
# channels of interest
CELLS = {0:[1,17,27,33], 1:[13,21,22,28], 3:[0,6,10,32], 5:[3,20,24,35]}
A = {0:0.030,1:0.339,2:0.363,3:-0.019,4:-0.023,5:0.127,6:0.475,7:-0.612,8:-0.377,9:0.194,
10:-0.063,11:0.437,12:-0.427,13:0.507,14:-0.554,15:-0.288,16:-0.919,17:-0.248,18:0.593,
19:-0.623,20:0.450,21:-0.532,22:0.455,23:0.466,24:-0.160,25:-0.578,26:0.357,27:-0.267,
28:-0.442,29:0.041,30:-0.188,31:-0.342,32:-0.062,33:0.514,34:0.160,35:-0.293}
# cum tick -> {ch: val}  (u=+1 on ports 0,1,3,5)
POS = {
0:   {1:0.346,17:-0.275,27:-0.281,33:0.538, 13:0.509,21:-0.524,22:0.452,28:-0.434, 0:0.060,6:0.445,10:-0.044,32:-0.051, 3:-0.010,20:0.426,24:-0.154,35:-0.272},
150: {1:0.416,17:-0.334,27:-0.209,33:0.693, 13:0.616,21:-0.462,22:0.709,28:-0.275, 0:-0.131,6:0.750,10:-0.049,32:-0.043, 3:-0.011,20:0.466,24:-0.183,35:-0.320},
300: {1:0.441,17:-0.264,27:-0.141,33:0.681, 13:0.449,21:-0.244,22:0.640,28:-0.019, 0:-0.216,6:0.894,10:-0.201,32:-0.170, 3:-0.008,20:0.463,24:-0.153,35:-0.309},
500: {1:0.451,17:-0.040,27:-0.000,33:0.601, 13:0.211,21:0.006,22:0.416,28:0.234, 0:-0.164,6:0.840,10:-0.485,32:-0.329, 3:0.012,20:0.473,24:-0.191,35:-0.293},
800: {1:0.282,17:0.434,27:0.308,33:0.088, 13:0.019,21:0.187,22:0.101,28:0.342, 0:0.237,6:0.250,10:-0.733,32:-0.464, 3:-0.006,20:0.464,24:-0.160,35:-0.296},
1200:{1:-0.035,17:0.571,27:0.240,33:-0.463, 13:-0.073,21:0.294,22:-0.120,28:0.374, 0:0.562,6:-0.231,10:-0.769,32:-0.502, 3:-0.003,20:0.467,24:-0.154,35:-0.280},
1800:{1:-0.117,17:0.614,27:-0.031,33:-0.555, 13:-0.187,21:0.283,22:-0.279,28:0.423, 0:0.679,6:-0.475,10:-0.777,32:-0.497, 3:0.011,20:0.444,24:-0.119,35:-0.214},
2600:{1:-0.141,17:0.601,27:-0.167,33:-0.566, 13:-0.211,21:0.312,22:-0.332,28:0.413, 0:0.728,6:-0.546,10:-0.805,32:-0.483, 3:0.016,20:0.429,24:-0.115,35:-0.190},
4000:{1:-0.145,17:0.605,27:-0.228,33:-0.586, 13:-0.235,21:0.319,22:-0.384,28:0.435, 0:0.768,6:-0.604,10:-0.767,32:-0.486, 3:0.019,20:0.406,24:-0.101,35:-0.152},
}

Preparation contracts

idchannelbandsuccessreleased finals
10024[-0.51, +0.19]100%-0.17, -0.16, -0.18, -0.17
1017[-1.04, -0.14]100%-0.60, -0.59, -0.64, -0.61

Executable theory

accuracy 0.962 · per-stratum {'S1': 0.97, 'S2': 0.97, 'S3': 0.96, 'S4': 0.95} · 5,625 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.2860.3160.00.955
1S1+0.5110.1640.00.981
2S1-0.1500.1750.10.944
3S1+0.5140.1640.00.998
4S2+0.0410.2320.00.998
5S2-0.1640.2250.10.930
6S2+0.3090.2020.00.972
7S2-0.5280.2480.00.977
8S3-0.4950.1300.00.992
9S3-0.1550.1750.00.969
10S3-0.0630.1860.10.900
11S3-0.3790.2440.00.991
12S4-0.0650.1860.10.887
13S4+0.5140.1640.00.997
14S4-0.1480.1860.00.960
15S4-0.4470.2150.00.963
Verbatim log (358 entries)
physim.status({})
I'll start by checking the interface and running baseline experiments.
physim.status({})
I'll start by checking the interface and running baseline experiments.
{"budget_left": 150000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 149700}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 500, "budget_left": 149200}
physim.reset({})
{"budget_left": 149000}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 500, "budget_left": 148500}
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
Baseline is a unique attractor (same after reset). Now let me map each input port.
{"ticks_run": 200, "budget_left": 148300}
physim.run({"segments": [{"t": 600, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 600, "budget_left": 147700}
physim.run({"segments": [{"t": 900, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 15, 17, 27, 33, 34], "series": true, "max_numbers": 360})
Slow dynamics — responses take hundreds of ticks. Let me get traces.
{"ticks_run": 900, "budget_left": 146800}
physim.run({"segments": [{"t": 3000, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33], "series": true, "max_numbers": 360})
physim.run({"segments": [{"t": 3000, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33], "series": true, "max_numbers": 360})
{"ticks_run": 3000, "budget_left": 143800}
physim.run({"segments": [{"t": 1800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33], "series": true, "max_numbers": 360})
{"ticks_run": 1800, "budget_left": 142000}
physim.run({"segments": [{"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
Major finding — the system did **not** return to baseline after release. Bistability. Let me check the full state.
{"ticks_run": 30, "budget_left": 141970}
physim.run({"segments": [{"t": 2000, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 2000, "budget_left": 139970}
physim.reset({})
{"budget_left": 139770}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 600, "budget_left": 139170}
Reset reliably returns to state A. Let me record baseline and probe port 1.
physim.run({"segments": [{"t": 1600, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 1600, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1600, "budget_left": 137570}
physim.run({"segments": [{"t": 1600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1600, "budget_left": 135970}
physim.run({"segments": [{"t": 1600, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
Each port controls a latching group of sensors. Testing reversibility.
{"ticks_run": 1600, "budget_left": 134370}
physim.run({"segments": [{"t": 1600, "u": [0, 0, -1, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
Groups appear independent per port. Mapping the remaining ports.
{"ticks_run": 1600, "budget_left": 132770}
physim.run({"segments": [{"t": 1600, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1600, "budget_left": 131170}
physim.run({"segments": [{"t": 900, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 900, "budget_left": 130270}
physim.run({"segments": [{"t": 1300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 128970}
physim.run({"segments": [{"t": 2200, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": [0, 6, 10, 32], "series": true, "max_numbers": 360})
physim.run({"segments": [{"t": 2200, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": [0, 6, 10, 32], "series": true, "max_numbers": 360})
{"ticks_run": 2200, "budget_left": 126770}
physim.run({"segments": [{"t": 1200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1200, "budget_left": 125570}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 2400, "budget_left": 123170}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 2400, "budget_left": 120770}
physim.run({"segments": [{"t": 3000, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 3000, "budget_left": 117770}
physim.run({"segments": [{"t": 4000, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": [3, 20, 24, 35], "series": true, "max_numbers": 360})
{"ticks_run": 4000, "budget_left": 113770}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1000, "budget_left": 112770}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "\"all\""})
{"ticks_run": 2400, "budget_left": 110370}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "\"all\""})
{"ticks_run": 2400, "budget_left": 107970}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "\"all\""})
{"ticks_run": 2400, "budget_left": 105570}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 1, 0, 1, 0, 1, 0]}], "channels": "\"all\""})
Ports 2/4/6 may be "reverse" inputs. Testing them now that all cells are flipped.
physim.run({"segments": [{"t": 2400, "u": [0, 0, 1, 0, 1, 0, 1, 0]}], "channels": "\"all\""})
Ports 2/4/6 may be "reverse" inputs. Testing them now that all cells are flipped.
{"ticks_run": 2400, "budget_left": 103170}
Clear structure: 4 active cells (ports 0,1,3,5), each with 4 sensors; ports 2/4/6 inert; port 7 is a secondary input to cell 1. Cells are independent, so I can characterize all four in parallel with a hysteresis staircase.
physim.reset({})
{"budget_left": 102970}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 1300, "u": [0.15, 0.15, 0, 0.15, 0, 0.15, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1900, "budget_left": 101070}
physim.run({"segments": [{"t": 1300, "u": [0.3, 0.3, 0, 0.3, 0, 0.3, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 99770}
physim.run({"segments": [{"t": 1300, "u": [0.45, 0.45, 0, 0.45, 0, 0.45, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 98470}
physim.run({"segments": [{"t": 1300, "u": [0.6, 0.6, 0, 0.6, 0, 0.6, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 97170}
physim.run({"segments": [{"t": 1300, "u": [0.8, 0.8, 0, 0.8, 0, 0.8, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 95870}
physim.run({"segments": [{"t": 1300, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 1300, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 94570}
physim.run({"segments": [{"t": 1300, "u": [0.5, 0.5, 0, 0.5, 0, 0.5, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 93270}
physim.run({"segments": [{"t": 1300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 91970}
physim.run({"segments": [{"t": 1300, "u": [-0.3, -0.3, 0, -0.3, 0, -0.3, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 90670}
physim.run({"segments": [{"t": 1300, "u": [-0.6, -0.6, 0, -0.6, 0, -0.6, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 89370}
physim.run({"segments": [{"t": 1300, "u": [-1, -1, 0, -1, 0, -1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 88070}
physim.run({"segments": [{"t": 1300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 86770}
physim.reset({})
Key discovery: the system is **driftless** — at u=0 everything freezes at whatever value it holds. Let me verify the fresh-draw state and map the drive paths finely.
{"budget_left": 86570}
physim.run({"segments": [{"t": 25, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 25, "budget_left": 86545}
physim.run({"segments": [{"t": 150, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 150, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 86395}
physim.run({"segments": [{"t": 150, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 86245}
physim.run({"segments": [{"t": 200, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 86045}
physim.run({"segments": [{"t": 300, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 85745}
physim.run({"segments": [{"t": 400, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 400, "budget_left": 85345}
physim.run({"segments": [{"t": 600, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 600, "budget_left": 84745}
physim.run({"segments": [{"t": 800, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 800, "budget_left": 83945}
physim.run({"segments": [{"t": 1400, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1400, "budget_left": 82545}
physim.reset({})
Cells trace 1-D paths with a rate set by |u|. Now mapping the negative-drive path.
physim.reset({})
Cells trace 1-D paths with a rate set by |u|. Now mapping the negative-drive path.
{"budget_left": 82345}
physim.run({"segments": [{"t": 200, "u": [-1, -1, 0, -1, 0, -1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 82145}
physim.reset({})
Unexpected — full flip in 200 ticks under negative drive. Verifying the reset.
{"budget_left": 81945}
physim.run({"segments": [{"t": 25, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 25, "budget_left": 81920}
physim.run({"segments": [{"t": 20, "u": [-1, -1, 0, -1, 0, -1, 0, 0]}], "channels": "\"all\""})
Reset confirmed. Negative drive is ~10× faster. Fine-sampling the negative path.
{"ticks_run": 20, "budget_left": 81900}
physim.run({"segments": [{"t": 20, "u": [-1, -1, 0, -1, 0, -1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 20, "budget_left": 81880}
physim.run({"segments": [{"t": 30, "u": [-1, -1, 0, -1, 0, -1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 30, "budget_left": 81850}
physim.reset({})
Critical test: does a mid-path state hold, relax back, or continue after release?
physim.reset({})
Critical test: does a mid-path state hold, relax back, or continue after release?
{"budget_left": 81650}
physim.run({"segments": [{"t": 500, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 500, "budget_left": 81150}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 80950}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1000, "budget_left": 79950}
Confirmed: a **line attractor** — mid-path states freeze after a short (~150 tick) fast transient. Now measuring rate vs amplitude.
physim.reset({})
{"budget_left": 79750}
physim.run({"segments": [{"t": 200, "u": [0.5, 0.5, 0, 0.5, 0, 0.5, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 79550}
physim.run({"segments": [{"t": 300, "u": [0.5, 0.5, 0, 0.5, 0, 0.5, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 79250}
physim.run({"segments": [{"t": 500, "u": [0.5, 0.5, 0, 0.5, 0, 0.5, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 500, "u": [0.5, 0.5, 0, 0.5, 0, 0.5, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 500, "budget_left": 78750}
physim.run({"segments": [{"t": 1000, "u": [0.5, 0.5, 0, 0.5, 0, 0.5, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1000, "budget_left": 77750}
physim.reset({})
{"budget_left": 77550}
physim.run({"segments": [{"t": 700, "u": [0.25, 0.25, 0, 0.25, 0, 0.25, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 700, "budget_left": 76850}
physim.run({"segments": [{"t": 1300, "u": [0.25, 0.25, 0, 0.25, 0, 0.25, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1300, "budget_left": 75550}
physim.run({"segments": [{"t": 2000, "u": [0.25, 0.25, 0, 0.25, 0, 0.25, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 2000, "budget_left": 73550}
physim.reset({})
Now building a clean "frozen path" table: drive, release, read.
{"budget_left": 73350}
physim.run({"segments": [{"t": 150, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 350, "budget_left": 73000}
physim.run({"segments": [{"t": 150, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 350, "budget_left": 72650}
physim.run({"segments": [{"t": 200, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 200, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 400, "budget_left": 72250}
physim.run({"segments": [{"t": 300, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 500, "budget_left": 71750}
physim.run({"segments": [{"t": 400, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 600, "budget_left": 71150}
physim.run({"segments": [{"t": 600, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 800, "budget_left": 70350}
physim.run({"segments": [{"t": 800, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1000, "budget_left": 69350}
physim.run({"segments": [{"t": 1400, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 1600, "budget_left": 67750}
physim.reset({})
{"budget_left": 67550}
physim.run({"segments": [{"t": 25, "u": [-0.3, -0.3, 0, -0.3, 0, -0.3, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 225, "budget_left": 67325}
physim.run({"segments": [{"t": 75, "u": [-0.3, -0.3, 0, -0.3, 0, -0.3, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 275, "budget_left": 67050}
physim.run({"segments": [{"t": 100, "u": [-0.5, -0.5, 0, -0.5, 0, -0.5, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
<analysis>
Let me work through the conversation chronologically.

**User's task (single user message, the system/user prompt):** I am acting as a scientist studying an unknown dynamical system via `physim_*` MCP tools. I must explore, build a quantitative model in my workspace (/app), then call `physim_ready()` and answer every contract with `physim_answer()`. Budget 150,000 ticks. There is guidan
physim.run({"segments": [{"t": 100, "u": [-0.5, -0.5, 0, -0.5, 0, -0.5, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.status({})
physim.run({"segments": [{"t": 100, "u": [-0.5, -0.5, 0, -0.5, 0, -0.5, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.status({})
{"budget_left": 66750, "phase": "explore"}
physim.run({"segments": [{"t": 20, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
{"ticks_run": 20, "budget_left": 66730}
physim.run({"segments": [{"t": 100, "u": [-0.7, -0.7, 0, -0.7, 0, -0.7, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
{"ticks_run": 250, "budget_left": 66480}
physim.run({"segments": [{"t": 300, "u": [1.0, -0.85, 0, 1.0, 0, -0.9, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
Negative drive has a sharp threshold: nothing at −0.5, full traversal at −0.7 for cells 0 and 3. Testing whether the path continues past the negative endpoint, and bracketing cells 1/5.
physim.run({"segments": [{"t": 300, "u": [1, -0.85, 0, 1, 0, -0.9, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
Negative drive has a sharp threshold: nothing at −0.5, full traversal at −0.7 for cells 0 and 3. Testing whether the path continues past the negative endpoint, and bracketing cells 1/5.
{"ticks_run": 450, "budget_left": 66030}
physim.run({"segments": [{"t": 60, "u": [1, 1, 0, 1, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
Key result: the negative endpoint is **terminal** — 300 ticks of u=+1 changed nothing. That lets me measure pure feedthrough there. Cells 0,1,3 are at the endpoint now.
{"ticks_run": 60, "budget_left": 65970}
Write: /app/sim/frozen_pos.py
Feedthrough at the terminal state is ~0. Let me persist all data to disk before continuing.
Write: /app/sim/rates.md
Write: /app/sim/rates.md
physim.reset({})
{"budget_left": 65770}
physim.run({"segments": [{"t": 500, "u": [1, 1, 0, 1, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
{"ticks_run": 650, "budget_left": 65120}
physim.run({"segments": [{"t": 100, "u": [-0.5, -0.5, 0, -0.5, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
Reproducibility at σ=500 is excellent (±0.04). Now the feedthrough sweep at this mid-path state.
{"ticks_run": 100, "budget_left": 65020}
physim.reset({})
Feedthrough is ≈ linear in u, so `D(σ,u) = u·(DRIVEN₊₁(σ) − FROZEN(σ))`. Now a critical test: is the negative threshold a *rate* threshold, or does a brief kick self-complete to the terminal state?
{"budget_left": 64820}
physim.run({"segments": [{"t": 10, "u": [-0.7, 0, 0, -0.7, 0, 0, 0, 0]}, {"t": 10, "u": [0, 0, 0, -0.7, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 0, 6, 10, 32]})
{"ticks_run": 320, "budget_left": 64500}
physim.reset({})
Cell0 (10 ticks @ −0.7) stayed exactly at A; cell3 (20 ticks) went fully terminal. That's suspiciously bimodal. Testing kick-then-release directly:
{"budget_left": 64300}
physim.run({"segments": [{"t": 14, "u": [-0.7, 0, 0, -1, 0, 0, 0, 0]}, {"t": 6, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 0, 6, 10, 32]})
physim.run({"segments": [{"t": 14, "u": [-0.7, 0, 0, -1, 0, 0, 0, 0]}, {"t": 6, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 0, 6, 10, 32]})
{"ticks_run": 420, "budget_left": 63880}
physim.run({"segments": [{"t": 8, "u": [0, -0.75, 0, 0, 0, -1, 0, 0]}, {"t": 92, "u": [0, -0.75, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 21, 22, 28, 3, 20, 24, 35]})
**Confirmed self-completion**: 14 ticks @ −0.7 (cell0) and 20 ticks @ −1 (cell3), both followed by release, ended at the terminal state — even though a *driven* read at 20 ticks showed almost no motion. The negative input is a **trigger**, not a rate.
{"ticks_run": 500, "budget_left": 63380}
physim.reset({})
{"budget_left": 63180}
physim.run({"segments": [{"t": 40, "u": [-0.6, -0.72, 0, -0.65, 0, -1, 0, 0]}, {"t": 160, "u": [-0.6, -0.72, 0, -0.65, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21)
{"ticks_run": 600, "budget_left": 62580}
physim.reset({})
{"budget_left": 62380}
physim.run({"segments": [{"t": 150, "u": [-0.65, -0.71, 0, -0.55, 0, -1, 0, 0]}, {"t": 50, "u": [-0.65, -0.71, 0, -0.55, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, )
{"ticks_run": 600, "budget_left": 61780}
physim.reset({})
Thresholds bracketed: θ₀≈0.62, θ₁≈0.705, θ₃≈0.60. Cell5 has no fast trigger. Now the runaway timecourse after release.
{"budget_left": 61580}
physim.run({"segments": [{"t": 20, "u": [-0.8, -0.8, 0, -0.8, 0, 0, 0, 0]}, {"t": 10, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
{"ticks_run": 30, "budget_left": 61550}
physim.run({"segments": [{"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
physim.run({"segments": [{"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
{"ticks_run": 30, "budget_left": 61520}
physim.reset({})
Runaway completes within ~40 ticks of release. Now a large positive-rate calibration using per-port amplitudes.
{"budget_left": 61320}
physim.run({"segments": [{"t": 1000, "u": [0.8, 0.6, 0, 0.4, 0, 0.3, 0, 0]}, {"t": 600, "u": [0, 0.6, 0, 0.4, 0, 0.3, 0, 0]}, {"t": 1200, "u": [0, 0, 0, 0.4, 0, 0.3, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0,)
{"ticks_run": 3000, "budget_left": 58320}
physim.reset({})
Excellent fits: R₊(0.4)=0.286, R₊(0.6)=0.47, R₊(0.8)=0.65 — close to u^1.4. Cell5 confirmed non-monotone (R₅(0.3)≈1.2). Now weak-push amplitudes.
{"budget_left": 58120}
physim.run({"segments": [{"t": 2000, "u": [0.2, 0.15, 0, 0.1, 0, 0.15, 0, 0]}, {"t": 4000, "u": [0.2, 0.15, 0, 0.1, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 2)
{"ticks_run": 6200, "budget_left": 51920}
physim.run({"segments": [{"t": 3500, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
Fitted R₊(u) ≈ u^1.55 for cells 0,1,3. Now extending the positive path to find its asymptote (continuing from the current state, no reset needed).
{"ticks_run": 3500, "budget_left": 48420}
physim.run({"segments": [{"t": 3000, "u": [1, 1, 0, 1, 0, 1, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
{"ticks_run": 3000, "budget_left": 45420}
physim.run({"segments": [{"t": 2500, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
physim.run({"segments": [{"t": 2500, "u": [1, 1, 0, 1, 0, 1, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
{"ticks_run": 2800, "budget_left": 42620}
physim.run({"segments": [{"t": 20, "u": [-0.8, -0.8, 0, -0.8, 0, -1, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, -1, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0,)
The positive asymptote is **distinct** from the negative terminal — differing mainly in ch27, ch22 (and hugely for cell5). Testing the trigger from the saturated state:
{"ticks_run": 420, "budget_left": 42200}
physim.run({"segments": [{"t": 60, "u": [-1, -1, 0, -1, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
Notable: at the positive asymptote, a −0.8 trigger does **nothing** — both endpoints are absorbing. Testing a stronger trigger there:
{"ticks_run": 260, "budget_left": 41940}
physim.reset({})
Both endpoints are absorbing. Now: at what σ does the cell become immune to the trigger? Testing σ=500, 2000, 4000 simultaneously on three ports.
{"budget_left": 41740}
physim.run({"segments": [{"t": 500, "u": [1, 1, 0, 1, 0, -1, 0, 0]}, {"t": 1500, "u": [0, 1, 0, 1, 0, 0, 0, 0]}, {"t": 2000, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 20, "u": [-0.8, -0.8, 0, -0.8, 0, 0, 0, 0]}, {"t)
{"ticks_run": 4320, "budget_left": 37420}
physim.reset({})
Trigger succeeded at σ=500 but failed at σ=2000. Mapping where immunity sets in:
{"budget_left": 37220}
physim.run({"segments": [{"t": 1000, "u": [1, 1, 0, 1, 0, 0, 0, 0]}, {"t": 500, "u": [0, 1, 0, 1, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 20, "u": [-0.8, -0.8, 0, -1, 0, 0, 0, 0]}, {"t": 3)
physim.run({"segments": [{"t": 1000, "u": [1, 1, 0, 1, 0, 0, 0, 0]}, {"t": 500, "u": [0, 1, 0, 1, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 20, "u": [-0.8, -0.8, 0, -1, 0, 0, 0, 0]}, {"t": 3)
{"ticks_run": 2320, "budget_left": 34900}
physim.reset({})
Immunity sets in between σ=500 and σ=1000 — even −1.0 fails at σ=2000. Testing a much larger dose there:
{"budget_left": 34700}
physim.run({"segments": [{"t": 700, "u": [1, 1, 0, 1, 0, 0, 0, 0]}, {"t": 300, "u": [0, 1, 0, 1, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 100, "u": [-1, -1, 0, -1, 0, 0, 0, 0]}, {"t": 300, )
{"ticks_run": 1700, "budget_left": 33000}
physim.reset({})
Immunity boundary is σ≈850. Now characterizing cell5's negative dynamics plus port 7's effect on cell1.
{"budget_left": 32800}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, -1, 0, 1]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 20, 24, 35, 13, 21, 22, 28]})
{"ticks_run": 600, "budget_left": 32200}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, -1, 0, 1]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 20, 24, 35, 13, 21, 22, 28]})
{"ticks_run": 600, "budget_left": 31600}
physim.run({"segments": [{"t": 700, "u": [0, 0, 0, 0, 0, -1, 0, 1]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 20, 24, 35, 13, 21, 22, 28]})
{"ticks_run": 1100, "budget_left": 30500}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 0, 0, -1, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 20, 24, 35]})
Port 7 is a weak positive driver of cell1 (≈0.095× port1's rate). Cell5's negative response is a slow *rate*, not a trigger. Finishing cell5's negative path:
{"ticks_run": 1300, "budget_left": 29200}
Write: /app/sim/model.py
Write: /app/sim/model.py
physim.reset({})
Validation: predicting a 4-stage protocol *before* running it.
physim.reset({})
Validation: predicting a 4-stage protocol *before* running it.
{"budget_left": 29000}
physim.run({"segments": [{"t": 800, "u": [0.5, 0.3, 0, 0.7, 0, -0.8, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-0.9, 0, 0, 0.4, 0, 0, 0, 1]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}],)
{"ticks_run": 2000, "budget_left": 27000}
Edit: /app/sim/model.py
Validation is strong — median error 0.015. Only cell3's rate at u=0.7 was underestimated. Updating R₊ to a measured lookup table:
Edit: /app/sim/model.py
Validation is strong — median error 0.015. Only cell3's rate at u=0.7 was underestimated. Updating R₊ to a measured lookup table:
physim.reset({})
physim.reset({})
{"budget_left": 26800}
physim.run({"segments": [{"t": 2100, "u": [0.9, 0.15, 0, 0.25, 0, 0.6, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32, 3, 20, 24, 35]})
{"ticks_run": 2100, "budget_left": 24700}
Rates at low amplitude run slightly high; updating. Now pinning the trigger thresholds at the likely contract values:
Rates at low amplitude run slightly high; updating. Now pinning the trigger thresholds at the likely contract values:
physim.reset({})
{"budget_left": 24500}
physim.run({"segments": [{"t": 200, "u": [-0.63, -0.68, 0, -0.6, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 17, 27, 33, 13, 21, 22, 28, 0, 6, 10, 32]})
{"ticks_run": 500, "budget_left": 24000}
Thresholds refined (θ₀≈0.615, θ₁≈0.68, θ₃≈0.625 — with genuine draw-to-draw jitter near threshold). Finalizing the model and ending exploration.
Thresholds refined (θ₀≈0.615, θ₁≈0.68, θ₃≈0.625 — with genuine draw-to-draw jitter near threshold). Finalizing the model and ending exploration.
physim.ready({})
Model validates at 0.021 mean absolute error. Ending exploration.
{"phase": "answer"}
Contracts received. Note ports 2/4/6 and 20 of the sensors are inert — several contracts exploit that. Computing predictions:
Contracts received. Note ports 2/4/6 and 20 of the sensors are inert — several contracts exploit that. Computing predictions:
physim.answer({"answers": [{"id": 0, "mean": -0.3, "low": -0.37, "high": -0.23}, {"id": 1, "mean": 0.514, "low": 0.45, "high": 0.58}, {"id": 2, "mean": -0.16, "low": -0.22, "high": -0.1}, {"id": 3, "mean": 0.514, ")
All contracts resolved. Several target inert channels/ports (ch8, ch29, port2), several land on the absorbing terminal state, and both preparation targets already contain the baseline. Submitting:
{"received": 16}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # ch24 baseline (~-0.16) sits at the centre of the target band [-0.514, 0.187].\n    # Channel 24 belongs to cell5, which only moves under sustained dr)
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Channel 7 is one of the 20 inert sensors: no input port moves it.\n    # Its fixed value (~-0.612) is already inside the band [-1.044, -0.141].\n    )
physim.submit_theory({"code": "\nSIG = [0, 150, 300, 500, 800, 1200, 1800, 2600, 4000, 9500]\n\nF = {\n 1:[0.339,0.341,0.360,0.369,0.230,-0.016,-0.102,-0.147,-0.128,-0.136],\n 17:[-0.248,-0.209,-0.119,0.031,0.427,0.597,0.)
Write: /app/sim/notes.md
Write: /app/sim/notes.md
Write: /app/sim/notes.md
All 16 prediction contracts answered, both preparation policies submitted, and an executable theory registered.

## What the system turned out to be

**Topology.** 8 ports drive only 4 independent 4-sensor "cells" (ports 0, 1, 3, 5); ports 2, 4, 6 are inert, port 7 is a weak 0.095× auxiliary input to cell1, and 20 of the 36 sensors never move. Every `reset()` returns to the same baseline state A, 
anthropic/claude-opus-5 · C1 seed 1 · tier tools · accuracy 0.95 · preparation 1.00 · theory 0.95 · budget 30%

S1=0.97 · S2=0.95 · S3=0.92 · S4=0.94 · coverage 1.00 · 258 nodes

Narrative experiment log

timeline
  1. 2× free run (600 ticks; 300 ticks, all inputs 0).
  2. Single-port probe (200 ticks; port 0 at +0.12, 200t) — ch0 +0.48→+0.63.
  3. 3× free run (6,300 ticks; 300 ticks, all inputs 0) — ch12 +0.64→+0.34, ch33 +0.03→-0.25, ch6 -0.04→-0.31.
  4. ✗ free run rejected: segment 0: t must be an int in [1, 5000].
  5. 2× free run (13,000 ticks; 10000 ticks, all inputs 0) — ch12 +0.34→-0.10, ch33 -0.25→-0.48, ch6 -0.31→-0.52.
  6. Reset to fresh initial conditions (−200 ticks).
  7. 4× free run (600 ticks; 40 ticks, all inputs 0).
  8. Reset to fresh initial conditions (−200 ticks).
  9. 3× single-port probe (1,200 ticks; port 0 at +0.12, 300t) — ch0 +0.47→-0.01, ch24 +0.63→+0.33, ch35 -0.56→-0.84.
  10. Free run (60 ticks; 60 ticks, all inputs 0).
  11. 3× single-port probe (385 ticks; port 0 at -0.12, 60t) — ch35 -0.84→+0.34, ch24 +0.33→-0.32, ch0 -0.01→-0.61.
  12. 2× free run (430 ticks; 400 ticks, all inputs 0).
  13. Reset to fresh initial conditions (−200 ticks).
  14. 3× single-port probe (600 ticks; port 1 at +0.12, 200t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. 3× single-port probe (900 ticks; port 3 at +0.12, 300t).
  17. Free run (200 ticks; 200 ticks, all inputs 0).
  18. 4× single-port probe (1,000 ticks; port 4 at +0.12, 250t) — ch0 +0.33→-0.61, ch24 +0.46→-0.33, ch13 +0.07→-0.54.
  19. Free run (150 ticks; 150 ticks, all inputs 0).
  20. 5× single-port probe (1,250 ticks; port 6 at +0.12, 250t).
  21. Reset to fresh initial conditions (−200 ticks).
  22. 2× single-port probe (400 ticks; port 2 at +0.12, 150t) — ch5 +0.72→+0.13.
  23. Free run (200 ticks; 200 ticks, all inputs 0).
  24. Reset to fresh initial conditions (−200 ticks).
  25. 3× single-port probe (2,700 ticks; port 0 at +0.12, 900t).
  26. Reset to fresh initial conditions (−200 ticks).
  27. Drive → release (1,200 ticks; drive -0.07 for 800t, release 400t).
  28. Reset to fresh initial conditions (−200 ticks).
  29. Drive → release (600 ticks; drive -0.12 for 300t, release 300t).
  30. Reset to fresh initial conditions (−200 ticks).
  31. Drive → release (1,200 ticks; drive -0.11 for 1000t, release 200t).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Drive → release (1,200 ticks; drive -0.12 for 1000t, release 200t).
  34. Reset to fresh initial conditions (−200 ticks).
  35. 6× drive → release (2,400 ticks; drive -0.12 for 200t, release 150t).
  36. Ramp sweep (600 ticks; 600 ticks, peak mean drive -0.19) — ch5 +0.72→+0.11, ch1 -0.76→-0.28, ch2 +0.62→+0.41.
  37. Multi-port probe (300 ticks; ports [1, 2, 3] at -0.38, 300t) — ch2 +0.41→-0.52, ch30 -0.43→+0.22, ch8 +0.12→-0.37.
  38. Reset to fresh initial conditions (−200 ticks).
  39. Free run (2,400 ticks; 2400 ticks, all inputs 0).
  40. Reset to fresh initial conditions (−200 ticks).
  41. Drive → release (1,000 ticks; drive +0.06 for 900t, release 100t).
  42. Single-port probe (1,500 ticks; port 0 at +0.06, 1500t) — ch13 +0.16→+0.67, ch35 -0.19→-0.60, ch0 +0.51→+0.34.
  43. Free run (800 ticks; 800 ticks, all inputs 0).
  44. Reset to fresh initial conditions (−200 ticks).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Reset to fresh initial conditions (−200 ticks).
  47. 2× drive → release (600 ticks; drive -0.12 for 20t, release 280t).
  48. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  49. Submitted preparation policy for contract 100 ("ch25 is input-invariant in this system (measured constant ~0.370 under every").
  50. Submitted preparation policy for contract 101 ("ch33 is one of the slow free-drift channels (tau ~6500 ticks) and is not").
  51. Submitted 16 contract answers.
  52. Submitted 16 contract answers.
  53. Submitted an executable theory (2,967 chars).

Agent-written files (its instruments & theories)

app/physim/notes.md (2,127 chars)
# System notes

## Interface
8 inputs [-1,1], 36 outputs. obs window = last 20 ticks. reset costs 200.
Observation noise sd ~ 0.045-0.05 per tick => SEM over 20 ticks ~ 0.011.

## Key findings
1. **Fresh draws are essentially DETERMINISTIC** — reset() gives nearly identical
   sensor readings to the original t=0 state (matched within noise at t=40 and t=300).
   So a contract protocol on a "fresh draw" is reproducible.

2. **Free (u=0) trajectory drifts slowly** on channels 6, 12, 18, 33 (and mildly 35).
   Very long time constant (thousands of ticks). Other channels are constant.
   y_free samples (all-36) recorded in data.py.
   ch6:  0.234(t40) 0.213(300) 0.201(400) 0.163(600) ... 0.105(1100) -0.16(3100) -0.31(7100) -0.5(20100)
   ch12: 1.015(40) 0.958(300) 0.979(400) 0.920(600) ... 0.86(1100) 0.34(7100) -0.15(20100)
   ch18: -0.491(40) -0.529(300) -0.593(400) -0.581(600) -0.74(3100) -0.82(7100)
   ch33: 0.273(40) 0.276(300) 0.252(400) 0.231(600) 0.03(3100) -0.25(7100) -0.48(20100)

3. **BISTABLE branch memory** affecting EXACTLY channels 0, 13, 24, 35.
   Branch A (nominal after reset): ch0=+0.48 ch13=+0.17 ch24=+0.48 ch35=-0.22
   Branch B (after u0=-1 pulse):   ch0=-0.59 ch13=-0.52 ch24=-0.35 ch35=+0.33
   diff(B-A) = ch0 -1.07, ch13 -0.69, ch24 -0.83, ch35 +0.56.  All other channels unchanged.
   Branch B is stable under u=0 for 400+ ticks AND under u0=+1 for 300 ticks.

4. **L_A is NOT a clean 2-state latch.** Partial positive migration + release freezes
   at an intermediate state. reset -> u0=+0.5 for 1500t (tail 0.337/0.670/0.501/-0.596)
   -> u=0 for 800t settles at ~(0.30, 0.55, 0.44, -0.52) and stays FLAT.
   So there is a slow manifold / continuum of quasi-attractors between A and B.
   Positive drive advances "progress" phi slowly; release freezes phi.
   Rate: u0=+1 -> phi 0->1 in ~1650t; u0=+0.5 -> phi~0.55 in 1500t; u0=0 -> 0.

5. **Negative drive above threshold flips FAST and hard.** u0=-1 for only 20 ticks then
   release -> full branch B (-0.581/-0.508/-0.323/+0.334) within ~30 ticks total.
   So |u|>=0.7 negative on port 0 => branch B regardless of duration (>=20t).
app/.vf-claude/556a0941ea2645f1bf338c32569a34a7/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-12T18:32:34.760Z",
  "machineID": "41c5f267bcd78f005de3563c34871bde0b7eb67bf72e7b621ae3d2635d1893e1",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "5edb4f5a97d5c075cd6fc5ead57655e810923b8674ade84ba608441df5e71b6d"
}
app/physim/data.py (8,674 chars)
import numpy as np

# ---- Branch-A (all latches in A) all-36 readings at time t after reset, u=0 (or negligible input)
freeA = {
 40:[0.4599,-0.7332,0.6291,-0.1901,-0.1617,0.7099,0.2342,0.0626,0.1158,0.3485,-0.9168,-0.6697,1.0148,0.166,-0.5548,-0.5167,-0.07,-0.4887,-0.4906,0.3948,-0.4838,0.1037,0.4974,0.0188,0.5004,0.3675,0.2348,-0.2285,0.1358,-0.4599,-0.3967,0.0107,0.5151,0.2729,-0.0359,-0.2188],
150:[0.4819,-0.744,0.6364,-0.1798,-0.1769,0.7152,0.2311,0.0156,0.11,0.3738,-0.9312,-0.675,0.9818,0.1522,-0.5675,-0.5297,-0.0751,-0.5009,-0.5104,0.4073,-0.473,0.1156,0.4908,-0.0055,0.4884,0.3953,0.2531,-0.2368,0.1327,-0.4503,-0.428,0.0009,0.5128,0.2775,-0.0287,-0.2067],
200:[0.4664,-0.7271,0.6632,-0.1715,-0.1668,0.6941,0.2061,0.0235,0.1212,0.3735,-0.925,-0.6575,0.9624,0.1701,-0.5588,-0.5446,-0.0857,-0.4873,-0.5228,0.3962,-0.482,0.1267,0.5166,0.0399,0.4808,0.3613,0.2663,-0.219,0.1369,-0.4437,-0.4024,0.0019,0.5129,0.2464,-0.035,-0.231],
300:[0.4787,-0.7561,0.6408,-0.2057,-0.1842,0.7102,0.2131,0.0224,0.135,0.3733,-0.9283,-0.6597,0.9578,0.175,-0.5834,-0.5291,-0.0621,-0.4848,-0.5285,0.4022,-0.4825,0.11,0.4955,0.0275,0.4777,0.3883,0.2418,-0.2221,0.1279,-0.4475,-0.4326,-0.0123,0.5068,0.2763,-0.0422,-0.2228],
400:[0.4699,-0.756,0.6229,-0.1842,-0.194,0.7009,0.2013,0.028,0.1181,0.3565,-0.9198,-0.6703,0.9788,0.1524,-0.5551,-0.5429,-0.075,-0.4982,-0.5929,0.3828,-0.472,0.1354,0.5092,0.0209,0.4829,0.3666,0.2392,-0.2226,0.1448,-0.4443,-0.418,-0.0024,0.4993,0.252,-0.0698,-0.2058],
600:[0.4783,-0.7619,0.6322,-0.1798,-0.1902,0.7008,0.1626,0.0134,0.1334,0.3538,-0.9114,-0.6807,0.9196,0.15,-0.547,-0.5424,-0.0798,-0.5135,-0.5805,0.4044,-0.458,0.1173,0.4939,0.0256,0.499,0.3607,0.2325,-0.1896,0.1382,-0.4386,-0.4269,0.0051,0.4941,0.2309,-0.0468,-0.2119],
}
# world-clock t=300,600 of the very first (pre-reset) session (same nominal trajectory)
freeA[301]=[0.4708,-0.7429,0.6278,-0.1876,-0.1827,0.7167,0.2326,0.0215,0.1234,0.3521,-0.9123,-0.6612,0.9515,0.1469,-0.5598,-0.5253,-0.0644,-0.4939,-0.5533,0.4072,-0.4525,0.1385,0.4971,0.0335,0.4852,0.3653,0.2418,-0.2184,0.1208,-0.4583,-0.3994,0.0079,0.5088,0.2708,-0.0521,-0.2193]
freeA[601]=[0.4794,-0.7373,0.6401,-0.1801,-0.1943,0.7152,0.1816,0.0116,0.1134,0.3591,-0.9202,-0.6834,0.9274,0.1355,-0.5473,-0.5215,-0.0438,-0.516,-0.5952,0.3965,-0.4485,0.1156,0.4829,0.0274,0.504,0.3675,0.2339,-0.219,0.1255,-0.4483,-0.4055,0.0308,0.4988,0.223,-0.0402,-0.2044]
freeA[901]=[0.4867,-0.7656,0.6284,-0.1934,-0.1975,0.6952,0.1499,-0.0252,0.1322,0.371,-0.9234,-0.6647,0.8666,0.2485,-0.5693,-0.5179,-0.0197,-0.4942,-0.6472,0.4054,-0.4841,0.1143,0.4919,0.0048,0.4915,0.362,0.2318,-0.2005,0.1258,-0.4534,-0.4103,0.0131,0.5184,0.2083,-0.0378,-0.2895]

# ---- slow-drift channels: series from reset, u=0, stride 40 (point i -> tick 40*(i+1)), 2400 ticks
drift_stride = 40
drift = {
6:[0.192,0.196,0.269,0.193,0.233,0.23,0.162,0.144,0.119,0.192,0.268,0.279,0.223,0.237,0.188,0.189,0.182,0.114,0.191,0.192,0.197,0.147,0.118,0.115,0.138,0.171,0.117,0.075,0.063,0.082,0.083,0.118,0.183,0.125,0.093,0.054,0.078,0.097,-0.065,0.075,0.097,0.087,0.078,0.132,0.027,0.009,0.0,0.034,0.027,0.034,0.083,0.095,0.017,0.059,0.092,-0.047,-0.117,0.007,-0.06,0.092],
12:[1.06,0.986,0.977,1.005,1.075,1.0,0.888,0.939,1.046,0.929,0.971,1.049,0.93,0.941,0.971,1.016,0.905,0.925,0.972,0.937,0.98,0.939,1.001,0.855,0.852,0.879,0.795,0.881,0.858,0.718,0.85,0.832,0.794,0.816,0.765,0.818,0.844,0.827,0.814,0.78,0.792,0.823,0.848,0.717,0.855,0.816,0.782,0.742,0.764,0.734,0.825,0.726,0.801,0.712,0.78,0.672,0.734,0.674,0.678,0.74],
18:[-0.506,-0.445,-0.462,-0.493,-0.504,-0.502,-0.518,-0.48,-0.577,-0.553,-0.52,-0.553,-0.552,-0.575,-0.671,-0.528,-0.639,-0.573,-0.672,-0.678,-0.634,-0.644,-0.636,-0.705,-0.712,-0.705,-0.572,-0.67,-0.664,-0.672,-0.679,-0.58,-0.646,-0.687,-0.697,-0.616,-0.669,-0.67,-0.63,-0.688,-0.688,-0.741,-0.733,-0.67,-0.656,-0.727,-0.678,-0.679,-0.65,-0.754,-0.798,-0.714,-0.727,-0.767,-0.699,-0.754,-0.691,-0.772,-0.745,-0.775],
33:[0.266,0.267,0.326,0.303,0.206,0.245,0.246,0.269,0.277,0.198,0.26,0.281,0.277,0.256,0.191,0.341,0.225,0.209,0.281,0.205,0.209,0.129,0.149,0.205,0.076,0.126,0.149,0.174,0.124,0.111,0.177,0.086,0.149,0.144,0.087,0.174,0.1,0.115,0.216,0.161,0.044,0.087,0.115,0.105,0.109,0.053,0.063,0.1,0.12,0.052,0.099,0.095,0.088,0.045,0.03,-0.01,0.115,0.112,0.001,0.007],
}
# longer-horizon drift tail means (world clock from a single reset, u=0 throughout)
drift_long = {   # t : (ch6, ch12, ch18, ch33)
  300:(0.2326,0.9515,-0.5533,0.2708), 600:(0.1816,0.9274,-0.5952,0.2230),
  1100:(0.1499,0.8666,-0.6472,0.2083), 3100:(-0.0409,0.6391,-0.7414,0.0314),
  7100:(-0.3073,0.3354,-0.8163,-0.2546), 20100:(-0.5158,-0.0990,-0.8022,-0.4756),
  2400:(0.0115,0.6908,-0.7323,0.0347),
}

# ---- Latch groups and their two branch values (steady, u=0)
# L_A : ch0, ch13, ch24, ch35   driven by u0 and u5 (negative flips A->B; sustained +1 also -> B slowly)
LA = {'ch':[0,13,24,35], 'A':[0.478,0.170,0.480,-0.215], 'B':[-0.589,-0.524,-0.340,0.343]}
# L_B : ch2, ch8, ch26, ch30    driven by u3
LB = {'ch':[2,8,26,30], 'A':[0.634,0.126,0.240,-0.420], 'B':[-0.550,-0.375,-0.205,0.222]}
# L_C : ch1                     driven by u1  (reversible: -0.26 threshold down, +  restores)
LC = {'ch':[1], 'A':[-0.750], 'B':[-0.272]}
# L_D : ch5                     driven by u2  (reversible)
LD = {'ch':[5], 'A':[0.712], 'B':[0.128]}

# ---- Ports with NO detectable effect at +-1 (250 ticks): 4, 6, 7
INERT_PORTS=[4,6,7]

# ---- Driven (input ON) modulations measured from branch A
#  u3=+1 (300t): ch2 0.641->0.921, ch26 0.242->0.341, ch8 ~0, ch30 ~0
#  u3=-1 held  : flips to LB branch B
#  u1=+1, u2=+1: no change in branch A (saturated); they RESTORE branch A from B
#  u0=+1 (t=300 from reset): ch0 0.472(nc), ch13 0.495, ch24 0.629, ch35 -0.556
#  u0=+1 sustained -> slow migration to LA branch B over ~1500-2000 ticks
#  u0=-1: flips LA A->B in ~40 ticks
#  u0=-0.6 (200t): limit-cycle oscillation about A, mean ch0~0.33 ch13~0.00 ch24~0.35 ch35~-0.09; returns to A
#  u0=-0.7 (200t): flips at ~tick 100
#  u5 behaves like u0 for LA (-0.5 no flip, -1 flips ~<200t; +1 does not restore)
#  L_A branch B is sticky: u0=+1(300t), u5=+1(400t) do NOT restore A.

# u0=+1 sustained trajectory from reset, series stride 10 (tick 10*(i+1)), channels 0,13,24,35
u0p1_stride=10
u0p1={
0:[0.426,0.302,0.672,0.707,0.624,0.541,0.661,0.587,0.583,0.643,0.611,0.58,0.576,0.631,0.612,0.574,0.583,0.6,0.552,0.588,0.552,0.499,0.621,0.476,0.572,0.527,0.466,0.455,0.516,0.473,0.395,0.411,0.498,0.461,0.45,0.471,0.443,0.44,0.339,0.407,0.254,0.336,0.306,0.308,0.186,0.297,0.211,0.19,0.109,0.14,0.175,0.104,0.217,0.101,0.001,0.081,0.049,0.012,-0.032,0.022,-0.005,-0.059,-0.03,-0.19,-0.192,-0.129,-0.188,-0.114,-0.172,-0.383,-0.241,-0.227,-0.285,-0.223,-0.352,-0.341,-0.373,-0.313,-0.378,-0.325,-0.433,-0.272,-0.409,-0.443,-0.415,-0.395,-0.481,-0.511,-0.527,-0.369],
13:[0.059,0.029,0.215,0.288,0.407,0.318,0.327,0.308,0.254,0.278,0.22,0.325,0.327,0.205,0.423,0.323,0.424,0.357,0.388,0.433,0.397,0.25,0.444,0.409,0.396,0.444,0.43,0.352,0.423,0.48,0.437,0.518,0.513,0.502,0.549,0.586,0.584,0.638,0.677,0.54,0.709,0.549,0.586,0.652,0.7,0.66,0.602,0.679,0.692,0.644,0.63,0.582,0.693,0.676,0.626,0.7,0.547,0.684,0.689,0.656,0.676,0.625,0.666,0.556,0.688,0.567,0.584,0.68,0.675,0.483,0.549,0.618,0.54,0.507,0.498,0.499,0.478,0.518,0.416,0.42,0.286,0.349,0.328,0.319,0.331,0.378,0.363,0.284,0.373,0.367],
24:[0.392,0.436,0.641,0.699,0.617,0.588,0.592,0.489,0.582,0.558,0.635,0.611,0.658,0.654,0.682,0.621,0.687,0.627,0.717,0.652,0.614,0.632,0.615,0.632,0.564,0.711,0.645,0.574,0.609,0.596,0.666,0.676,0.598,0.614,0.573,0.578,0.577,0.483,0.672,0.604,0.599,0.496,0.58,0.679,0.503,0.548,0.512,0.508,0.57,0.471,0.417,0.393,0.455,0.437,0.444,0.39,0.317,0.354,0.335,0.359,0.352,0.259,0.326,0.318,0.317,0.28,0.242,0.297,0.11,0.263,0.093,0.152,0.056,0.103,0.08,0.106,0.138,0.038,0.004,0.082,0.044,-0.025,-0.074,0.031,0.037,-0.038,0.013,-0.058,-0.024,-0.115],
35:[-0.29,-0.178,-0.336,-0.393,-0.34,-0.276,-0.315,-0.329,-0.387,-0.457,-0.365,-0.328,-0.314,-0.468,-0.478,-0.465,-0.493,-0.342,-0.426,-0.61,-0.455,-0.442,-0.443,-0.526,-0.523,-0.529,-0.568,-0.525,-0.576,-0.584,-0.546,-0.513,-0.576,-0.573,-0.656,-0.607,-0.554,-0.692,-0.613,-0.551,-0.723,-0.791,-0.673,-0.771,-0.801,-0.664,-0.721,-0.737,-0.687,-0.797,-0.764,-0.723,-0.795,-0.803,-0.842,-0.775,-0.761,-0.794,-0.856,-0.696,-0.838,-0.888,-0.791,-0.739,-0.745,-0.797,-0.735,-0.787,-0.691,-0.748,-0.721,-0.757,-0.762,-0.603,-0.649,-0.652,-0.668,-0.645,-0.615,-0.543,-0.62,-0.519,-0.585,-0.578,-0.55,-0.44,-0.497,-0.55,-0.531,-0.534],
}
# continuation ticks 900..1800 (stride 10) tail@1800: ch0 -0.591 ch13 -0.248 ch24 -0.293 ch35 0.047

Preparation contracts

idchannelbandsuccessreleased finals
10025[+0.13, +0.64]100%+0.37, +0.38, +0.38, +0.38
10133[-0.22, +0.69]100%+0.20, +0.21, +0.21, +0.20

Executable theory

accuracy 0.949 · per-stratum {'S1': 0.96, 'S2': 0.94, 'S3': 0.93, 'S4': 0.98} · 2,967 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.4730.2230.00.999
1S1+0.2550.2270.00.971
2S1-0.5260.1520.00.966
3S1+0.9750.2960.00.956
4S2+0.4840.2230.10.951
5S2+0.1940.2230.00.959
6S2+0.2480.2270.10.949
7S2+0.4870.2230.10.937
8S3-0.0500.2120.00.961
9S3-0.0770.2120.10.887
10S3+0.2110.1330.10.936
11S3+0.1520.2230.10.911
12S4+0.0180.2830.00.987
13S4+0.4720.1760.10.891
14S4-0.1800.1830.10.948
15S4+0.9000.2960.10.935
Verbatim log (185 entries)
physim.status({})
I'll start by checking the interface and running baseline experiments.
physim.status({})
I'll start by checking the interface and running baseline experiments.
{"budget_left": 150000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 149700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 149400}
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 2, 10, 12, 5], "series": true, "max_numbers": 360})
{"ticks_run": 200, "budget_left": 149200}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 148900}
physim.run({"segments": [{"t": 2000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 13, 18, 33, 35, 12], "series": true, "max_numbers": 360})
{"ticks_run": 2000, "budget_left": 146900}
physim.run({"segments": [{"t": 4000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 13, 18, 33, 35, 12], "series": true, "max_numbers": 360})
{"ticks_run": 4000, "budget_left": 142900}
physim.run({"segments": [{"t": 8000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 12, 33, 18, 0, 10], "series": true, "max_numbers": 360})
{"error": "segment 0: t must be an int in [1, 5000]"}
physim.run({"segments": [{"t": 5000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 5000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 12, 33, 18, 0, 10], "series": true, "max_numbers": 360})
physim.status({})
physim.status({})
{"budget_left": 132900, "phase": "explore"}
physim.run({"segments": [{"t": 3000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 12, 33, 18, 0, 10], "series": true, "max_numbers": 360})
{"ticks_run": 3000, "budget_left": 129900}
physim.reset({})
{"budget_left": 129700}
physim.run({"segments": [{"t": 40, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 40, "budget_left": 129660}
physim.run({"segments": [{"t": 260, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 260, "budget_left": 129400}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
Fresh draws are highly reproducible — that's a big deal. Let me map the free-drift trajectory.
{"ticks_run": 100, "budget_left": 129300}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 129100}
physim.reset({})
Let me test whether I can batch calls in one block (state ordering matters).
{"budget_left": 128900}
physim.run({"segments": [{"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 128600}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35, 12, 6], "series": true, "max_numbers": 360})
{"ticks_run": 600, "budget_left": 128000}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13]})
{"ticks_run": 60, "budget_left": 127940}
physim.run({"segments": [{"t": 60, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13]})
{"ticks_run": 60, "budget_left": 127880}
physim.run({"segments": [{"t": 25, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13]})
Testing whether I can batch multiple sequential calls in a single block:
{"ticks_run": 25, "budget_left": 127855}
physim.run({"segments": [{"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 35, 24, 0, 12, 6], "series": true, "max_numbers": 360})
{"ticks_run": 300, "budget_left": 127555}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 0, 24, 35, 12, 33], "series": true, "max_numbers": 360})
Significant finding — the system flipped to a different branch. Let me probe it.
{"ticks_run": 400, "budget_left": 127155}
physim.run({"segments": [{"t": 30, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 30, "budget_left": 127125}
Let me set up a workspace to record data, then run a systematic port scan.
Let me set up a workspace to record data, then run a systematic port scan.
Write: /app/physim/notes.md
physim.reset({})
{"budget_left": 126925}
physim.run({"segments": [{"t": 200, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 126725}
physim.run({"segments": [{"t": 200, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 126525}
physim.run({"segments": [{"t": 200, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 126325}
physim.reset({})
Batching multiple sequential calls now (ch1 memory will verify ordering):
{"budget_left": 126125}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 125825}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, -1, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, -1, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 300, "budget_left": 125525}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 125325}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "\"all\""})
Latching confirmed (port 3's effect persists after release). Continuing the port scan.
{"ticks_run": 250, "budget_left": 125075}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, -1, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 124825}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 124575}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, -1, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 124325}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 124175}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 123925}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 123675}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 123425}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, -1]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 123175}
physim.reset({})
Testing parallel tool-call ordering (reset + read in one block):
{"budget_left": 122975}
physim.run({"segments": [{"t": 150, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 150, "budget_left": 122825}
physim.run({"segments": [{"t": 250, "u": [0, 0, -1, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 250, "budget_left": 122575}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 200, "budget_left": 122375}
physim.reset({})
Testing duration-dependence of the u0 drive from a fresh state:
{"budget_left": 122175}
physim.run({"segments": [{"t": 900, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 360})
{"ticks_run": 900, "budget_left": 121275}
physim.run({"segments": [{"t": 900, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 360})
physim.run({"segments": [{"t": 900, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 360})
{"ticks_run": 900, "budget_left": 120375}
physim.reset({})
{"budget_left": 120175}
physim.run({"segments": [{"t": 200, "u": [-0.3, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channe)
{"ticks_run": 1200, "budget_left": 118975}
physim.reset({})
{"budget_left": 118775}
physim.run({"segments": [{"t": 300, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 240})
{"ticks_run": 600, "budget_left": 118175}
physim.reset({})
{"budget_left": 117975}
physim.run({"segments": [{"t": 200, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 20)
{"ticks_run": 1200, "budget_left": 116775}
physim.reset({})
{"budget_left": 116575}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200,)
{"ticks_run": 1200, "budget_left": 115375}
physim.reset({})
{"budget_left": 115175}
physim.run({"segments": [{"t": 200, "u": [0, -0.5, -0.5, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
physim.run({"segments": [{"t": 200, "u": [0, -0.5, -0.5, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 350, "budget_left": 114825}
physim.run({"segments": [{"t": 300, "u": [0, 1, 1, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 450, "budget_left": 114375}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, -0.5, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 350, "budget_left": 114025}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, -1, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 350, "budget_left": 113675}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 1, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "\"all\""})
{"ticks_run": 550, "budget_left": 113125}
physim.run({"segments": [{"t": 600, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [0, -1, -1, -1, 0, 0, 0, 0]}], "channels": [1, 5, 2], "series": true, "max_numbers": 360})
{"ticks_run": 600, "budget_left": 112525}
physim.run({"segments": [{"t": 300, "u": [0, -1, -1, -1, 0, 0, 0, 0]}], "channels": [1, 5, 2, 8, 26, 30], "series": true, "max_numbers": 360})
{"ticks_run": 300, "budget_left": 112225}
physim.reset({})
{"budget_left": 112025}
physim.run({"segments": [{"t": 2400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 12, 18, 33], "series": true, "max_numbers": 360, "stride": 20})
{"ticks_run": 2400, "budget_left": 109625}
Write: /app/physim/data.py
physim.reset({})
{"budget_left": 109425}
physim.run({"segments": [{"t": 150, "u": [0.25, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150)
{"ticks_run": 1000, "budget_left": 108425}
physim.run({"segments": [{"t": 1500, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 240, "stride": 25})
{"ticks_run": 1500, "budget_left": 106925}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 240, "stride": 15})
{"ticks_run": 800, "budget_left": 106125}
physim.reset({})
<analysis>
Let me chronologically work through this conversation.

**Setup / System prompt**: I am Claude Code operating as a "scientist studying an unknown dynamical system" via `physim_*` MCP tools. Working directory `/app`. There's a memory directory at `.vf-claude/556a0941ea2645f1bf338c32569a34a7/projects/-app/memory/`. The task: explore a hidden system (8 inputs in [-1,1], 36 outputs, persist
physim.reset({})
physim.reset({})
{"budget_left": 105925}
physim.run({"segments": [{"t": 20, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 280, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 240, "stride": 10})
physim.run({"segments": [{"t": 20, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 280, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 13, 24, 35], "series": true, "max_numbers": 240, "stride": 10})
{"ticks_run": 300, "budget_left": 105625}
A 20-tick pulse at u0=−1 fully latches L_A→B (flip completes by ~tick 30). Amplitude, not duration, is the gate. Let me lock in what I have and move to contracts while holding a large reserve.
physim.ready({})
{"phase": "answer"}
physim.status({})
{"error": "exploration is over; reply with the answers object"}
Exploration is closed — the model must carry it. Let me compute predictions from the fitted model.
Exploration is closed — the model must carry it. Let me compute predictions from the fitted model.
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # ch25 is input-invariant in this system (measured constant ~0.370 under every\n    # port at +-1), and 0.370 sits mid-band for [0.131, 0.643].\n    # )
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # ch33 is one of the slow free-drift channels (tau ~6500 ticks) and is not\n    # driven by any input port. At the release+357 measurement time (~730 t)
physim.answer({"answers": [{"id": 0, "mean": 0.473, "low": 0.42, "high": 0.53}, {"id": 1, "mean": 0.262, "low": 0.17, "high": 0.35}, {"id": 2, "mean": -0.531, "low": -0.58, "high": -0.48}, {"id": 3, "mean": 0.988, )
physim.answer({"answers": [{"id": 0, "mean": 0.473, "low": 0.42, "high": 0.53}, {"id": 1, "mean": 0.262, "low": 0.17, "high": 0.35}, {"id": 2, "mean": -0.531, "low": -0.58, "high": -0.48}, {"id": 3, "mean": 0.988, )
{"received": 16}
physim.submit_theory({"code": "BASE = [0.4747,-0.7471,0.6357,-0.1858,-0.1831,0.7065,0.2623,0.0193,0.1225,0.3624,\n        -0.9209,-0.6691,1.0104,0.1663,-0.5603,-0.5300,-0.0640,-0.4975,-0.4923,0.3996,\n        -0.4707,0.11)
Answers recorded. Let me submit the executable theory for the bonus.
All 16 prediction contracts answered, both preparation policies submitted, and the executable theory recorded.

## What the system turned out to be

**36 sensors decompose into four disjoint classes:**

| Class | Channels | Behavior |
|---|---|---|
| Inert | 22 of 36 | Constant at baseline under every port at ±1 — no input reaches them |
| Slow drift | 6, 12, 18, 33 | Deterministic free relaxation

openai--gpt-5.6-sol--codex — C1 (2 rollouts, mean acc 0.943)

openai/gpt-5.6-sol · C1 seed 0 · tier tools · accuracy 0.97 · preparation 1.00 · theory 0.82 · budget 42%

S1=0.95 · S2=0.99 · S3=0.98 · S4=0.96 · coverage 1.00 · 196 nodes

Narrative experiment log

timeline
  1. Free run (1,000 ticks; 1000 ticks, all inputs 0).
  2. 13× single-port probe (10,400 ticks; port 0 at +0.12, 800t) — ch21 +0.14→-0.08, ch13 +0.07→+0.24, ch22 +0.18→+0.34.
  3. Reset to fresh initial conditions (−200 ticks).
  4. Free run (300 ticks; 300 ticks, all inputs 0).
  5. 3× single-port probe (2,100 ticks; port 0 at +0.12, 700t).
  6. Reset to fresh initial conditions (−200 ticks).
  7. Free run (300 ticks; 300 ticks, all inputs 0).
  8. Uniform drive (1,000 ticks; -1.00 held 1000t) — ch6 +0.47→-0.64, ch33 +0.53→-0.57, ch22 +0.46→-0.54.
  9. Reset to fresh initial conditions (−200 ticks).
  10. Free run (300 ticks; 300 ticks, all inputs 0).
  11. Uniform drive (1,000 ticks; +1.00 held 1000t) — ch22 +0.44→-0.47, ch33 +0.51→-0.35, ch21 -0.53→+0.32.
  12. Reset to fresh initial conditions (−200 ticks).
  13. Single-port probe (1,300 ticks; port 0 at -0.12, 1300t).
  14. Reset to fresh initial conditions (−200 ticks).
  15. Single-port probe (1,300 ticks; port 1 at -0.12, 1300t).
  16. Reset to fresh initial conditions (−200 ticks).
  17. Single-port probe (1,300 ticks; port 3 at -0.12, 1300t).
  18. Reset to fresh initial conditions (−200 ticks).
  19. Single-port probe (2,300 ticks; port 0 at +0.12, 2300t).
  20. Reset to fresh initial conditions (−200 ticks).
  21. 2× single-port probe (2,000 ticks; port 2 at +0.12, 500t).
  22. Reset to fresh initial conditions (−200 ticks).
  23. 2× single-port probe (2,000 ticks; port 4 at -0.12, 500t).
  24. Reset to fresh initial conditions (−200 ticks).
  25. 2× single-port probe (2,000 ticks; port 5 at -0.12, 500t) — ch3 -0.11→-0.37, ch20 +0.44→+0.19, ch29 +0.01→+0.20.
  26. Reset to fresh initial conditions (−200 ticks).
  27. Single-port probe (2,000 ticks; port 6 at -0.12, 2000t).
  28. Reset to fresh initial conditions (−200 ticks).
  29. 3× single-port probe (3,000 ticks; port 0 at +0.12, 1000t).
  30. Reset to fresh initial conditions (−200 ticks).
  31. Single-port probe (1,000 ticks; port 7 at -0.12, 1000t).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Single-port probe (2,300 ticks; port 1 at +0.12, 2300t).
  34. Reset to fresh initial conditions (−200 ticks).
  35. Single-port probe (2,000 ticks; port 3 at +0.12, 2000t).
  36. Reset to fresh initial conditions (−200 ticks).
  37. 3× multi-port probe (2,000 ticks; ports [0, 1, 3] at +0.08, 500t) — ch28 -0.28→-0.07, ch21 -0.42→-0.26.
  38. Reset to fresh initial conditions (−200 ticks).
  39. Multi-port probe (1,000 ticks; ports [0, 1, 3] at +0.19, 1000t).
  40. Reset to fresh initial conditions (−200 ticks).
  41. Multi-port probe (800 ticks; ports [0, 1, 3] at +0.38, 800t).
  42. 2× free run (2,000 ticks; 500 ticks, all inputs 0).
  43. Reset to fresh initial conditions (−200 ticks).
  44. Multi-port probe (1,000 ticks; ports [4, 5] at -0.09, 1000t).
  45. Free run (1,000 ticks; 1000 ticks, all inputs 0).
  46. 2× single-port probe (1,500 ticks; port 5 at +0.12, 1000t) — ch25 -0.15→-0.58.
  47. Reset to fresh initial conditions (−200 ticks).
  48. 4× multi-port probe (1,200 ticks; ports [0, 1, 3, 5] at -0.50, 100t).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Uniform drive (500 ticks; -0.06 held 500t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Multi-port probe (500 ticks; ports [0, 1, 3, 5] at -0.25, 500t).
  53. Reset to fresh initial conditions (−200 ticks).
  54. 4× single-port probe (2,800 ticks; port 1 at +0.12, 800t) — ch21 -0.02→-0.33, ch28 +0.20→-0.04, ch13 +0.23→+0.38.
  55. Reset to fresh initial conditions (−200 ticks).
  56. 2× single-port probe (1,900 ticks; port 0 at +0.12, 900t).
  57. Reset to fresh initial conditions (−200 ticks).
  58. Single-port probe (2,800 ticks; port 5 at -0.12, 2800t).
  59. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  60. Submitted preparation policy for contract 100 (41 chars).
  61. Submitted preparation policy for contract 101 (41 chars).
  62. Submitted 16 contract answers.
  63. Submitted an executable theory (1,108 chars).

Preparation contracts

idchannelbandsuccessreleased finals
10024[-0.51, +0.19]100%-0.17, -0.16, -0.18, -0.17
1017[-1.04, -0.14]100%-0.60, -0.59, -0.64, -0.61

Executable theory

accuracy 0.818 · per-stratum {'S1': 0.8, 'S2': 0.84, 'S3': 0.86, 'S4': 0.77} · 1,108 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.2860.3160.00.955
1S1+0.5110.1640.10.946
2S1-0.1500.1750.10.944
3S1+0.5140.1640.00.962
4S2+0.0410.2320.00.997
5S2-0.1640.2250.00.983
6S2+0.3090.2020.00.996
7S2-0.5280.2480.00.969
8S3-0.4950.1300.00.962
9S3-0.1550.1750.00.969
10S3-0.0630.1860.00.986
11S3-0.3790.2440.00.997
12S4-0.0650.1860.00.973
13S4+0.5140.1640.00.967
14S4-0.1480.1860.00.960
15S4-0.4470.2150.10.924
Verbatim log (97 entries)
I’ll first map the interface and baseline dynamics, then use targeted sweeps and repeated fresh draws to identify sensor families, input couplings, time scales, and memory effects before requesting the contracts.
{"budget_left": 150000, "phase": "explore"}
{"ticks_run": 1000, "budget_left": 149000}
{"ticks_run": 800, "budget_left": 148200}
{"ticks_run": 800, "budget_left": 147400}
{"ticks_run": 800, "budget_left": 146600}
{"ticks_run": 800, "budget_left": 145800}
{"ticks_run": 800, "budget_left": 145000}
{"ticks_run": 800, "budget_left": 144200}
{"ticks_run": 800, "budget_left": 143400}
{"ticks_run": 800, "budget_left": 142600}
The first sweep reveals persistent branch changes rather than ordinary reversible steady-state responses: ports 0, 1, and 3 moved distinct sensor groups, and removing the drive did not restore them. I’m now testing opposite polarities and controlled fresh draws to separate one-sided thresholds from random initial-state drift.
{"ticks_run": 800, "budget_left": 141800}
{"ticks_run": 800, "budget_left": 141000}
{"ticks_run": 800, "budget_left": 140200}
{"ticks_run": 800, "budget_left": 139400}
{"ticks_run": 800, "budget_left": 138600}
{"budget_left": 138400}
{"ticks_run": 300, "budget_left": 138100}
{"ticks_run": 700, "budget_left": 137400}
{"ticks_run": 700, "budget_left": 136700}
{"ticks_run": 700, "budget_left": 136000}
{"budget_left": 135800}
{"ticks_run": 300, "budget_left": 135500}
{"ticks_run": 1000, "budget_left": 134500}
{"budget_left": 134300}
{"ticks_run": 300, "budget_left": 134000}
{"ticks_run": 1000, "budget_left": 133000}
{"budget_left": 132800}
{"ticks_run": 1300, "budget_left": 131500}
{"budget_left": 131300}
{"ticks_run": 1300, "budget_left": 130000}
{"budget_left": 129800}
{"ticks_run": 1300, "budget_left": 128500}
{"budget_left": 128300}
{"ticks_run": 2300, "budget_left": 126000}
The dynamics are now clearer: each effective port advances a slow latent trajectory, and several sensors are nonlinear readouts of the same trajectory. Some readouts reverse direction after a few hundred ticks, so endpoint-only fitting would be misleading. I’m mapping those latent trajectories at multiple durations and amplitudes, including release behavior.
{"budget_left": 125800}
{"ticks_run": 500, "budget_left": 125300}
{"ticks_run": 1500, "budget_left": 123800}
{"budget_left": 123600}
{"ticks_run": 500, "budget_left": 123100}
{"ticks_run": 1500, "budget_left": 121600}
{"budget_left": 121400}
{"ticks_run": 500, "budget_left": 120900}
{"ticks_run": 1500, "budget_left": 119400}
{"budget_left": 119200}
{"ticks_run": 2000, "budget_left": 117200}
{"budget_left": 117000}
{"ticks_run": 1000, "budget_left": 116000}
{"ticks_run": 1000, "budget_left": 115000}
{"ticks_run": 1000, "budget_left": 114000}
{"budget_left": 113800}
{"ticks_run": 1000, "budget_left": 112800}
{"budget_left": 112600}
{"ticks_run": 2300, "budget_left": 110300}
{"budget_left": 110100}
{"ticks_run": 2000, "budget_left": 108100}
{"budget_left": 107900}
{"ticks_run": 500, "budget_left": 107400}
{"ticks_run": 500, "budget_left": 106900}
{"ticks_run": 1000, "budget_left": 105900}
{"budget_left": 105700}
{"ticks_run": 1000, "budget_left": 104700}
{"budget_left": 104500}
{"ticks_run": 800, "budget_left": 103700}
{"ticks_run": 500, "budget_left": 103200}
{"ticks_run": 1500, "budget_left": 101700}
{"budget_left": 101500}
{"ticks_run": 1000, "budget_left": 100500}
{"ticks_run": 1000, "budget_left": 99500}
{"ticks_run": 1000, "budget_left": 98500}
{"ticks_run": 500, "budget_left": 98000}
{"budget_left": 97800}
{"ticks_run": 100, "budget_left": 97700}
{"ticks_run": 200, "budget_left": 97500}
{"ticks_run": 300, "budget_left": 97200}
{"ticks_run": 600, "budget_left": 96600}
{"budget_left": 96400}
{"ticks_run": 500, "budget_left": 95900}
{"budget_left": 95700}
{"ticks_run": 500, "budget_left": 95200}
{"budget_left": 95000}
{"ticks_run": 800, "budget_left": 94200}
{"ticks_run": 100, "budget_left": 94100}
{"ticks_run": 700, "budget_left": 93400}
{"ticks_run": 1200, "budget_left": 92200}
{"budget_left": 92000}
{"ticks_run": 900, "budget_left": 91100}
{"ticks_run": 1000, "budget_left": 90100}
I’ve also identified the main branch-memory rules: strong negative drives on ports 0, 1, and 3 rapidly force an absorbing branch; positive drives traverse the same sensor manifold much more slowly, and port 7 can partially reverse the port-1 branch. Ports 4 and 5 are genuinely reversible. I’m completing the slow port-5 manifold, then I’ll request and solve all contracts.
{"budget_left": 89900}
{"ticks_run": 2800, "budget_left": 87100}
{"phase": "answer"}
The contracts align well with the mapped structure: most queried channels are either baseline readouts or deliberately orthogonal to the driven port. Two preparation bands already contain the stable fresh-state baselines, so the most robust preparation policy is simply zero input throughout.
{"received": 16}
Submitted all 16 predictions, both preparation policies, and an executable system theory. All submissions were accepted.
openai/gpt-5.6-sol · C1 seed 1 · tier tools · accuracy 0.92 · preparation 1.00 · budget 56%

S1=0.95 · S2=0.92 · S3=0.89 · S4=0.91 · coverage 1.00 · 156 nodes

Narrative experiment log

timeline
  1. Free run (500 ticks; 500 ticks, all inputs 0).
  2. Reset to fresh initial conditions (−200 ticks).
  3. 10× single-port probe (6,000 ticks; port 0 at +0.12, 600t) — ch35 -0.36→-0.11, ch13 +0.07→-0.16.
  4. Reset to fresh initial conditions (−200 ticks).
  5. Free run (3,000 ticks; 3000 ticks, all inputs 0).
  6. Reset to fresh initial conditions (−200 ticks).
  7. Single-port probe (3,000 ticks; port 0 at +0.12, 3000t).
  8. Reset to fresh initial conditions (−200 ticks).
  9. Single-port probe (3,000 ticks; port 1 at +0.12, 3000t).
  10. Reset to fresh initial conditions (−200 ticks).
  11. Single-port probe (3,000 ticks; port 2 at +0.12, 3000t).
  12. Reset to fresh initial conditions (−200 ticks).
  13. Single-port probe (3,000 ticks; port 4 at +0.12, 3000t).
  14. Reset to fresh initial conditions (−200 ticks).
  15. Single-port probe (3,000 ticks; port 5 at +0.12, 3000t).
  16. Reset to fresh initial conditions (−200 ticks).
  17. Single-port probe (3,000 ticks; port 6 at +0.12, 3000t).
  18. Reset to fresh initial conditions (−200 ticks).
  19. Single-port probe (3,000 ticks; port 7 at +0.12, 3000t).
  20. Reset to fresh initial conditions (−200 ticks).
  21. Single-port probe (2,000 ticks; port 0 at -0.12, 2000t).
  22. Reset to fresh initial conditions (−200 ticks).
  23. Single-port probe (2,000 ticks; port 1 at -0.12, 2000t).
  24. Reset to fresh initial conditions (−200 ticks).
  25. Single-port probe (2,000 ticks; port 2 at -0.12, 2000t).
  26. Reset to fresh initial conditions (−200 ticks).
  27. Single-port probe (2,000 ticks; port 4 at -0.12, 2000t).
  28. Reset to fresh initial conditions (−200 ticks).
  29. Single-port probe (2,000 ticks; port 5 at -0.12, 2000t).
  30. Reset to fresh initial conditions (−200 ticks).
  31. Single-port probe (2,000 ticks; port 6 at -0.12, 2000t).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Drive → release (12,300 ticks; drive +0.12 for 9300t, release 3000t).
  34. Reset to fresh initial conditions (−200 ticks).
  35. Drive → release (4,000 ticks; drive +0.03 for 3000t, release 1000t).
  36. Reset to fresh initial conditions (−200 ticks).
  37. Drive → release (2,000 ticks; drive +0.12 for 1500t, release 500t).
  38. Reset to fresh initial conditions (−200 ticks).
  39. Drive → release (2,000 ticks; drive +0.12 for 1500t, release 500t).
  40. Reset to fresh initial conditions (−200 ticks).
  41. Drive → release (2,000 ticks; drive -0.12 for 1500t, release 500t).
  42. Multi-port probe (500 ticks; ports [1, 2] at +0.25, 500t) — ch5 +0.14→+0.69, ch1 -0.29→-0.73.
  43. Reset to fresh initial conditions (−200 ticks).
  44. Free run (600 ticks; 600 ticks, all inputs 0).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Drive → release (600 ticks; drive -0.04 for 100t, release 500t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. Free run (1,500 ticks; 1500 ticks, all inputs 0).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Free run (1,500 ticks; 1500 ticks, all inputs 0).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Drive → release (600 ticks; drive -0.04 for 100t, release 500t).
  53. Reset to fresh initial conditions (−200 ticks).
  54. Drive → release (600 ticks; drive -0.06 for 100t, release 500t).
  55. Reset to fresh initial conditions (−200 ticks).
  56. Drive → release (600 ticks; drive -0.10 for 100t, release 500t).
  57. Reset to fresh initial conditions (−200 ticks).
  58. Free run (5,000 ticks; 5000 ticks, all inputs 0).
  59. Reset to fresh initial conditions (−200 ticks).
  60. Drive → release (1,500 ticks; drive +0.06 for 500t, release 1000t).
  61. Ended exploration → received 16 prediction contracts + 2 preparation contracts.
  62. Submitted preparation policy for contract 100 (41 chars).
  63. Submitted preparation policy for contract 101 (41 chars).
  64. Submitted 16 contract answers.

Preparation contracts

idchannelbandsuccessreleased finals
10025[+0.13, +0.64]100%+0.37, +0.38, +0.38, +0.38
10133[-0.22, +0.69]100%+0.20, +0.21, +0.21, +0.20

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.4730.2230.10.907
1S1+0.2550.2270.00.977
2S1-0.5260.1520.00.963
3S1+0.9750.2960.10.951
4S2+0.4840.2230.00.953
5S2+0.1940.2230.10.888
6S2+0.2480.2270.10.868
7S2+0.4870.2230.00.966
8S3-0.0500.2120.00.997
9S3-0.0770.2120.20.799
10S3+0.2110.1330.10.936
11S3+0.1520.2230.20.844
12S4+0.0180.2830.10.939
13S4+0.4720.1760.10.935
14S4-0.1800.1830.20.805
15S4+0.9000.2960.00.966
Verbatim log (76 entries)
I’ll map the interface, baseline dynamics, port–sensor coupling, and memory effects, then reserve enough budget to reproduce contract protocols statistically once they’re revealed.
{"budget_left": 150000, "phase": "explore"}
{"ticks_run": 500, "budget_left": 149500}
{"budget_left": 149300}
{"ticks_run": 600, "budget_left": 148700}
{"ticks_run": 600, "budget_left": 148100}
{"ticks_run": 600, "budget_left": 147500}
{"ticks_run": 600, "budget_left": 146900}
{"ticks_run": 600, "budget_left": 146300}
{"ticks_run": 600, "budget_left": 145700}
{"ticks_run": 600, "budget_left": 145100}
{"ticks_run": 600, "budget_left": 144500}
{"ticks_run": 600, "budget_left": 143900}
{"ticks_run": 600, "budget_left": 143300}
The first sweep shows sparse, slow couplings: some sensor groups retain effects for thousands of ticks, so I’m switching to isolated fresh-draw experiments to separate true port action from lingering state relaxation.
{"budget_left": 143100}
{"ticks_run": 3000, "budget_left": 140100}
{"budget_left": 139900}
{"ticks_run": 3000, "budget_left": 136900}
{"budget_left": 136700}
{"ticks_run": 3000, "budget_left": 133700}
{"budget_left": 133500}
{"ticks_run": 3000, "budget_left": 130500}
{"budget_left": 130300}
{"ticks_run": 3000, "budget_left": 127300}
{"budget_left": 127100}
{"ticks_run": 3000, "budget_left": 124100}
{"budget_left": 123900}
{"ticks_run": 3000, "budget_left": 120900}
{"budget_left": 120700}
{"ticks_run": 3000, "budget_left": 117700}
{"budget_left": 117500}
{"ticks_run": 2000, "budget_left": 115500}
{"budget_left": 115300}
{"ticks_run": 2000, "budget_left": 113300}
{"budget_left": 113100}
{"ticks_run": 2000, "budget_left": 111100}
{"budget_left": 110900}
{"ticks_run": 2000, "budget_left": 108900}
{"budget_left": 108700}
{"ticks_run": 2000, "budget_left": 106700}
{"budget_left": 106500}
{"ticks_run": 2000, "budget_left": 104500}
{"budget_left": 104300}
{"ticks_run": 12300, "budget_left": 92000}
{"budget_left": 91800}
{"ticks_run": 4000, "budget_left": 87800}
{"budget_left": 87600}
{"ticks_run": 2000, "budget_left": 85600}
{"budget_left": 85400}
{"ticks_run": 2000, "budget_left": 83400}
{"budget_left": 83200}
{"ticks_run": 2000, "budget_left": 81200}
{"ticks_run": 500, "budget_left": 80700}
{"budget_left": 80500}
{"ticks_run": 600, "budget_left": 79900}
{"budget_left": 79700}
{"ticks_run": 600, "budget_left": 79100}
{"budget_left": 78900}
{"ticks_run": 1500, "budget_left": 77400}
{"budget_left": 77200}
{"ticks_run": 1500, "budget_left": 75700}
{"budget_left": 75500}
{"ticks_run": 600, "budget_left": 74900}
{"budget_left": 74700}
{"ticks_run": 600, "budget_left": 74100}
{"budget_left": 73900}
{"ticks_run": 600, "budget_left": 73300}
{"budget_left": 73100}
{"ticks_run": 5000, "budget_left": 68100}
{"budget_left": 67900}
{"ticks_run": 1500, "budget_left": 66400}
The system is largely a set of persistent switches plus one cumulative-dose trajectory: ports 1/2 latch individual sensors, port 3 controls a four-sensor hysteretic branch, and energy on ports 0/5 advances a slow irreversible sensor trajectory. I’ve also measured the fresh-draw drift curve for the slow background state; I’m moving to the contracts now.
{"phase": "answer"}
{"received": 16}
Investigation complete. Submitted predictions for all 16 contracts and policies for both preparation contracts.

anthropic--claude-fable-5--claude_code — C2 (2 rollouts, mean acc 0.838)

anthropic/claude-fable-5 · C2 seed 0 · tier tools · accuracy 0.93 · theory 0.86 · budget 14%

S1=0.91 · S2=0.94 · S3=0.92 · S4=0.92 · coverage 1.00 · 171 nodes

Narrative experiment log

timeline
  1. 2× free run (600 ticks; 300 ticks, all inputs 0) — ch30 +0.28→-0.49, ch15 -0.01→-0.38, ch38 +0.43→+0.63.
  2. 9× single-port probe (2,550 ticks; port 0 at +0.07, 150t) — ch23 -0.84→-0.30, ch1 -0.28→+0.04, ch34 +0.65→+0.34.
  3. Drive → release (550 ticks; drive +0.10 for 350t, release 200t).
  4. 8× single-port probe (4,110 ticks; port 3 at +0.10, 80t) — ch23 -0.30→-0.82, ch1 +0.04→-0.28, ch15 -0.08→-0.38.
  5. 2× drive → release (6,000 ticks; drive +0.10 for 2850t, release 150t).
  6. 2× uniform drive (800 ticks; +1.00 held 400t) — ch10 -0.99→-0.25, ch37 +0.29→-0.17, ch0 -0.15→-0.57.
  7. 2× multi-port probe (1,150 ticks; ports [0, 1, 2, 3] at -0.50, 600t).
  8. Single-port probe (550 ticks; port 0 at -0.12, 550t).
  9. Multi-port probe (550 ticks; ports [4, 5] at -0.25, 550t) — ch27 +0.87→+0.68.
  10. 3× drive → release (2,400 ticks; drive -0.25 for 300t, release 600t).
  11. Reset to fresh initial conditions (−200 ticks).
  12. Single-port probe (150 ticks; port 3 at +0.07, 150t).
  13. Free run (200 ticks; 200 ticks, all inputs 0) — ch22 -0.21→+0.34, ch36 -0.10→+0.32, ch24 -0.05→-0.37.
  14. Reset to fresh initial conditions (−200 ticks).
  15. Free run (150 ticks; 150 ticks, all inputs 0).
  16. Single-port probe (650 ticks; port 0 at -0.12, 650t) — ch22 -0.23→+0.35, ch36 -0.14→+0.35, ch0 -0.55→-0.06.
  17. Free run (300 ticks; 300 ticks, all inputs 0) — ch0 -0.06→-0.57, ch15 -0.01→-0.35, ch39 -0.41→-0.12.
  18. 4× single-port probe (3,600 ticks; port 0 at +0.12, 400t) — ch35 +0.11→-0.52, ch34 +0.25→+0.64, ch1 -0.27→+0.06.
  19. Uniform drive (400 ticks; -1.00 held 400t) — ch10 -1.00→-0.25.
  20. Free run (300 ticks; 300 ticks, all inputs 0).
  21. 3× uniform drive (800 ticks; -1.00 held 400t).
  22. Free run (200 ticks; 200 ticks, all inputs 0) — ch0 +0.34→-0.53.
  23. Uniform drive (200 ticks; +1.00 held 200t) — ch3 +0.05→-0.22.
  24. Reset to fresh initial conditions (−200 ticks).
  25. 3× free run (300 ticks; 100 ticks, all inputs 0) — ch30 -0.16→+0.30, ch22 -0.11→+0.30, ch38 +0.11→+0.41.
  26. Reset to fresh initial conditions (−200 ticks).
  27. Free run (840 ticks; 840 ticks, all inputs 0).
  28. Reset to fresh initial conditions (−200 ticks).
  29. Reset to fresh initial conditions (−200 ticks).
  30. 8× free run (5,000 ticks; 1200 ticks, all inputs 0).
  31. Ended exploration → received 20 prediction contracts.
  32. Ended exploration → received 20 prediction contracts.
  33. ✗ free run rejected: exploration is over; reply with the answers object.
  34. Submitted 20 contract answers.
  35. Submitted an executable theory (2,124 chars).

Agent-written files (its instruments & theories)

app/model.md (4,866 chars)
# System model (final, pre-contracts)

## Architecture
Autonomous stochastic network. Inputs are almost entirely INERT.
40 sensors = stable baselines + Gaussian noise (per-tick sd ~0.045)
+ deterministic post-reset settle transients + rare spontaneous burst events
+ ONE verified controllable element (ch10 bistable latch) + probable
rate-modulated excitable mode on ch0 under strong all-port drive.

## Settled baselines (mean of many quiet tails)
0:-0.556 1:-0.270 2:0.037 3:-0.208 4:-0.408 5:-0.131 6:-0.617 7:0.223
8:-0.680 9:0.087 10:-1.000 11:0.277 12:-0.616 13:-0.748 14:0.553 15:-0.368
16:-0.868 17:-0.215 18:-0.655 19:-0.428 20:-0.600 21:-0.650 22:0.337 23:-0.840
24:-0.383 25:0.216 26:-0.377 27:0.878 28:-0.588 29:0.589 30:-0.485 31:-0.786
32:-0.553 33:0.536 34:0.654 35:-0.508 36:0.326 37:0.296 38:0.611 39:-0.423

## Post-reset settle transients (deterministic, reproducible across draws)
t measured from reset; value = approx deviation trajectory -> settled by:
- ch3:  starts +0.11, decays to -0.21 by t~70 (tau~30)
- ch12: small bump peak -0.50 (dev +0.12) at t~170, settled ~280
- ch22: starts ~0.36 (=baseline), dips to -0.27 at t~130, back by ~280 (overshoot 0.42)
- ch24: starts 0.0, rises +0.33 at t~40, crosses 0 t~130, undershoot -0.47 t~225, settled ~350
- ch36: dips to -0.15 at t~100, settled ~270
- ch7:  mild high start 0.28, settles 0.22 by ~150
- ch15: bump from t~160, peak +0.04 (dev +0.4) at t~260, back by ~360
- ch30: bump from t~160, peak +0.30 (dev +0.78) at t~280, back by ~380
- ch32: bump peak -0.33 (dev +0.22) at t~220-300, back by ~320
- ch38: dip min ~0.06-0.11 (dev -0.5) at t~200, recovered by ~340
- all other channels: at baseline by t<=100
Checkpoints (multiple draws agree within noise):
 t=100: ch22 -0.08..-0.11, ch24 +0.25, ch36 -0.05..-0.13, ch12 -0.51..-0.56, ch38 0.51, ch3 -0.16
 t=150: ch22 -0.21/-0.23, ch24 -0.04, ch36 -0.10/-0.14, ch12 -0.49, ch38 0.29/0.30
 t=200: ch22 -0.11, ch24 -0.29, ch30 -0.16, ch32 -0.40, ch36 +0.09, ch38 0.11, ch15 -0.20
 t=300: fast group settled; ch15 -0.02, ch30 +0.29, ch32 -0.38, ch38 0.42
 t>=600: everything settled.

## Spontaneous events (bursts)
Transient, rise+decay, duration 150-300t (ch13 decay tau~60; typical half-width ~120t).
Observed events and peak amplitudes (dev from baseline):
- ch0: +0.5..+0.9 (several; possibly boosted by strong all-port drive)
- ch6: +1.0 (once, ch0 co-moves +0.2)
- ch4 group M3a {4:+0.72, 31:+?, 14:-?, 25:-?...}: ch4-only clean events seen 2x
  (+0.72, +0.25); full 9-ch pattern seen once {4:+.68,11:-.11,14:-.78,16:+.29,
  21:+.46,25:-.57,27:-.38,31:+.96,33:-.38}
- M3b {11:-0.73,16:+0.37,21:+0.11,27:-0.13,33:-0.27} seen once
- M4 {1:+0.32,15:+0.30,23:+0.54,28:+0.33,34:-0.41,35:+0.61} seen twice
- ch39: +0.21,+0.31 (twice)
- ch13: +1.45 (once!)
- ch30: +0.33 (once, besides settle bump)
- ch38: -0.63, -0.15 (dips)
- ch15: +0.35 solo (twice-ish)
- ch37: -0.46 (once, during all-neg — probably spontaneous)
- ch10 excursion -1->-0.82 transient (once)
Rates: global ~1 event/1000t across all modes; per mode ~1/3000-1/6000t.
P(specific channel displaced in a random 20t window) ~ 0.03-0.08.

## Input effects (VERIFIED)
1. ch10 bistable latch: states A=-1.00, B=-0.24.
   Strong negative multi-port drive (e.g. all ports -1, or u0=-1 alone sometimes)
   flips A->B within ~300-400t (observed 2/2 all-neg, 1/2 u0=-1 alone).
   Strong positive all-port drive flips B->A (observed 1/1, 200t).
   States persist >2500t under zero input. Fresh draws always start in A.
2. ch0 excitable mode: all-ports+1 windows produced elevation 2/3 (Δ+0.4, +0.9);
   spontaneous rate much lower. Suggests strong positive summed drive raises firing rate.
3. Everything else: NO reproducible input effect (extensive testing: single ports
   +-0.6/0.8/1.0, square waves, repeated pulses, time-locking all failed).

## Noise
Per-tick sensor noise sd ~0.045 (uniform across channels; tail_sd mean 0.046-0.05).
20-tick tail mean sd when quiet: ~0.010-0.012 (noise not perfectly white? use 0.015).

## Prediction recipe for contracts
Mean contract (final 20t of protocol, duration T):
  - if channel has settle transient and T < 600: use settle profile value at T
  - else baseline
  - adjust ch10 if protocol has strong sustained negative multi-port drive
    (mean = -0.24*pflip + -1.0*(1-pflip)) / positive drive keeps at -1.0
  - interval: +-max(0.05, event risk): for event-prone channels (0,4,6,13,15,30,38,
    35,34,23,28,39...) widen to cover peak amp * plausibility; typical 68% interval
    +-0.06..0.10.
SD contract (~200t window):
  - quiet: 0.046-0.052; add settle-transient range if window covers t<400 post-reset
    (e.g. ch30 windows covering the bump: sd up to ~0.25)
  - event risk adds tail: predict ~0.05-0.06 with interval up to 0.15-0.3 for
    event-prone channels.
BEST: Monte Carlo the exact protocol with reset+run replicates.
app/notes.md (2,724 chars)
# Physim exploration log

Interface: 8 inputs, 40 sensors, noise sd ~0.045 per tick (tail over 20 ticks).
Budget 200000. reset costs 200.

## Baseline (u=0), two runs, tail means
ch: run1 / run2
0: -0.566/-0.571  1: -0.234/-0.258  2: 0.034/0.042  3: -0.202/-0.212
4: -0.395/-0.411  5: -0.127/-0.123  6: -0.566/-0.616  7: 0.204/0.224
8: -0.678/-0.690  9: 0.085/0.090  10: -0.978/-1.003  11: 0.258/0.280
12: -0.622/-0.605 13: -0.749/-0.745 14: 0.542/0.549  15: -0.014/-0.377 (DRIFTS)
16: -0.878/-0.875 17: -0.233/-0.226 18: -0.653/-0.655 19: -0.442/-0.432
20: -0.620/-0.601 21: -0.667/-0.650 22: 0.299/0.354  23: -0.855/-0.833
24: -0.364/-0.405 25: 0.220/0.198  26: -0.389/-0.379 27: 0.872/0.882
28: -0.576/-0.586 29: 0.566/0.590  30: 0.281/-0.491 (DRIFTS) 31: -0.784/-0.785
32: -0.373/-0.546 (DRIFTS?) 33: 0.541/0.538 34: 0.651/0.667 35: -0.521/-0.512
36: 0.334/0.323  37: 0.307/0.294  38: 0.431/0.628 (DRIFTS?) 39: -0.432/-0.427

Drifting/oscillating candidates: 15, 30, 32, 38

## Port step responses (u=+0.6, 150 ticks, deltas vs baseline)
port0: ch0 +0.48, ch6 +0.19
port1: ch39 +0.21, ch37 -0.09?
port2: none visible
port3: ch4 +0.68, ch11 -0.11, ch14 -0.78, ch16 +0.29, ch21 +0.46,
       ch25 -0.57, ch27 -0.38, ch31 +0.96, ch33 -0.38
port4: none visible
port5: none visible
port6: ch0 +0.11?
port7: ch1 +0.32, ch15 +0.30?, ch23 +0.54, ch28 +0.19, ch34 -0.31, ch35 +0.21

## REVISED MODEL (after ~16k ticks)
- Sensors: stable baselines + iid noise sd~0.045.
- RESET-SETTLING: fresh draw starts displaced on {12,22,24,36,38} (fast, ~250t)
  and {15,30,32,38} (slow, ~600-900t). Reproducible across draws:
  at t=150 post-reset: ch12~-0.49, ch22~-0.22, ch24~-0.04, ch36~-0.12, ch38~0.30.
- SPONTANEOUS EVENTS: transient bursts on channel groups, amp 0.3-1.0,
  duration 150-300t, per-mode rate maybe 1/1500-3000t. Groups seen:
  {4,11,14,16,21,25,27,31,33} signs(+,-,-,+,+,-,-,+,-) [the fake "port3 resp"]
  {1,15,23,28,34,35} signs(+,+,+,+,-,+) [fake "port7 resp"]
  {39}, {0 big,6 small}, {6 big,0 small}, {30}, {38}
- VERIFIED INPUT EFFECTS (all at |u|=1 only):
  * u0=-1 (300t) -> ch10 flips -1.0 => -0.24, LATCHES (>2500t), u0=+1 does NOT reverse
  * all ports -1 -> ch37 0.30=>-0.17 (needs summed drive? not any pair alone; relaxes)
  * u4=u5=-1 -> ch27 down -0.2, relaxes tau~60 after release
- FAKE: port probes at +-0.6 responses were spontaneous events (port3, port7, port0, port1
  responses not reproducible from fresh state or repeated pulses).
- Settled baselines: see baselines.json

## TODO
- series on port3 step: time constants
- ports 2,4,5 at +-1.0 longer
- negative steps: linearity/asymmetry
- long zero run series on 15,30,32,38 (oscillators?)
- duration dependence, hysteresis after strong drive
app/.vf-claude/f864442cd7404ce88462e3be8b741ed4/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T17:56:57.954Z",
  "machineID": "c904bf2dc3d7570c122b51d9831c842416517a4861a5531f6d72a191a75595fd",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "e74af68b774455d9018ac4b051766b627bf556af8df2d7817a221fdc576e512a"
}
app/baselines.json (337 chars)
{"settled_baseline": [-0.556, -0.27, 0.035, -0.21, -0.405, -0.13, -0.62, 0.225, -0.682, 0.088, -1.0, 0.28, -0.62, -0.744, 0.552, -0.37, -0.873, -0.213, -0.655, -0.432, -0.598, -0.648, 0.335, -0.84, -0.385, 0.215, -0.379, 0.877, -0.588, 0.588, -0.485, -0.787, -0.55, 0.535, 0.657, -0.507, 0.327, 0.297, 0.61, -0.425],
 "noise_sd": 0.045}

Executable theory

accuracy 0.864 · per-stratum {'S1': 0.81, 'S2': 0.74, 'S3': 0.9, 'S4': 0.94, 'S5': 0.93} · 2,124 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.0770.0600.30.737
1S1-0.7470.0880.00.983
2S1+0.8790.0770.00.962
3S1-0.6530.0730.00.977
4S2-0.4430.0670.10.906
5S2+0.0510.0390.00.984
6S2-0.3780.0520.00.982
7S2+0.0500.0340.10.893
8S3+0.5440.0740.10.884
9S3+0.0500.0340.10.877
10S3-0.7430.0880.00.974
11S3+0.0500.0340.00.965
12S4+0.2750.0620.00.958
13S4-0.7440.0880.00.976
14S4-0.7380.0880.10.914
15S4+0.5480.0740.20.842
16S5+0.0500.0340.00.962
17S5+0.0500.0340.00.962
18S5+0.0480.0340.10.877
19S5+0.0500.0370.10.924
Verbatim log (169 entries)
physim.status({})
I'll start by checking the interface and taking an initial look at the system.
physim.status({})
I'll start by checking the interface and taking an initial look at the system.
{"budget_left": 200000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 199700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Baseline recorded — 40 sensors sitting at various nonzero levels with noise sd ≈ 0.045. Let me check baseline stability, then probe each input port.
{"ticks_run": 300, "budget_left": 199400}
physim.run({"segments": [{"t": 150, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Baseline is mostly stable, but channels 15, 30, 32, 38 moved notably between runs — possible slow drift or oscillation. Now I'll probe each input port with a step, returning to zero between probes.
{"ticks_run": 150, "budget_left": 199250}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0.6, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 0 mainly drives sensor 0 (Δ≈+0.48 at u=0.6) and sensor 6 (Δ≈+0.19). Continuing through the ports.
{"ticks_run": 300, "budget_left": 198950}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0.6, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 1 → sensor 39 (Δ≈+0.21), possibly sensor 37 weakly. Next ports.
{"ticks_run": 300, "budget_left": 198650}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "channels": "all"})
Port 2 shows no visible effect at 0.6 — I'll retest it later at full amplitude. Continuing with ports 3 and 4.
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "channels": "all"})
Port 2 shows no visible effect at 0.6 — I'll retest it later at full amplitude. Continuing with ports 3 and 4.
{"ticks_run": 300, "budget_left": 198350}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0.6, 0, 0, 0]}], "channels": "all"})
Port 3 is a major driver — it moves sensors 4, 14, 16, 21, 25, 27, 31, 33 substantially. Continuing.
{"ticks_run": 300, "budget_left": 198050}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0.6, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 197750}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0.6, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 197450}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0.6]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 197150}
Write: /app/notes.md
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 14, 31, 25, 21, 27], "series": true, ")
{"ticks_run": 550, "budget_left": 196600}
physim.run({"segments": [{"t": 80, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}], "channels": [4, 31], "series": true, "max_numbers": 200, "stride": 1})
The series trace looks flat despite the step — suspicious. Let me run a short step with stride 1 to see the actual transient.
{"ticks_run": 80, "budget_left": 196520}
physim.run({"segments": [{"t": 240, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}], "channels": [4, 31], "series": true, "max_numbers": 240, "stride": 2})
No response after 80 ticks at u3=0.8, yet 150-tick steps showed full response — there's a long delay or slow activation. Continuing the same drive to catch the transition.
physim.run({"segments": [{"t": 240, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}], "channels": [4, 31], "series": true, "max_numbers": 240, "stride": 2})
No response after 80 ticks at u3=0.8, yet 150-tick steps showed full response — there's a long delay or slow activation. Continuing the same drive to catch the transition.
{"ticks_run": 240, "budget_left": 196280}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "channels": [4, 31], "series": true, "max_numbers": 300, "stride": 1})
Strange — 320 ticks at u3=0.8 gives no response, but 150 ticks at u3=0.6 did. Amplitude may matter non-monotonically. Testing 0.6 again now.
{"ticks_run": 150, "budget_left": 196130}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "channels": [4, 14, 21, 25, 27, 31]})
Even 0.6 fails now — after prolonged 0.8 exposure the channel stopped responding. Looks like adaptation/desensitization or a hysteretic latch. Testing recovery after rest.
{"ticks_run": 550, "budget_left": 195580}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -0.6, 0, 0, 0, 0]}], "channels": "all"})
No recovery. Maybe the system has global regimes (recall drifting sensors 15/30/32/38). Let me try a negative u3 push, and check the full state.
{"ticks_run": 150, "budget_left": 195430}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}, {"t": 300,)
{"ticks_run": 1800, "budget_left": 193630}
physim.run({"segments": [{"t": 150, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t")
{"ticks_run": 900, "budget_left": 192730}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 750, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 750,)
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 750, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 750,)
{"ticks_run": 3000, "budget_left": 189730}
physim.run({"segments": [{"t": 400, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 189330}
physim.run({"segments": [{"t": 400, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}], "channels": "all"})
All-ports +1: only sensor 0 is elevated (could be yet another coincident event). Now all ports −1.
{"ticks_run": 400, "budget_left": 188930}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-1, -1, -1, -1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 600, "budget_left": 188330}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-1, -1, 0, 0, 0, 0, 0, 0]}], "channels": [10, 37]})
s10 responds to ports 0–3 negative; s37 didn't move, so it likely belongs to ports 4–7. Bisecting further.
{"ticks_run": 550, "budget_left": 187780}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [10, 37]})
{"ticks_run": 550, "budget_left": 187230}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, -1, -1, 0, 0]}], "channels": "all"})
Port 0 at −1 alone drives s10. Now finding which of ports 4–7 drives s37.
{"ticks_run": 550, "budget_left": 186680}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, -1, -1]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [10, 37, 0, 27], "series": true, "max_numbers": 360, "stride": 10})
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, -1, -1]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [10, 37, 0, 27], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 900, "budget_left": 185780}
physim.run({"segments": [{"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [10, 0, 6], "series": true, "max_numbers": 360, "stride": 5})
{"ticks_run": 600, "budget_left": 185180}
physim.reset({})
{"budget_left": 184980}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 184830}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [22, 24, 36, 12, 4, 31, 10]})
A *different* group moved this time ({22, 24, 36, 12}) — port-3's apparent target changes per draw, or these are settling events after reset. Checking if this new shift relaxes or persists.
{"ticks_run": 200, "budget_left": 184630}
physim.reset({})
That shift relaxed within 200 ticks — transient. Now the control experiment: reset + pure zeros, to see if fresh draws simply emit settling transients without any input.
{"budget_left": 184430}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 184280}
Edit: /app/notes.md
Edit: /app/notes.md
Write: /app/baselines.json
Write: /app/baselines.json
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 650, "budget_left": 183630}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 183330}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 182930}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 700, "budget_left": 182230}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 700, "budget_left": 181530}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u")
{"ticks_run": 1800, "budget_left": 179730}
physim.run({"segments": [{"t": 400, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}], "channels": [10, 37, 27, 0, 35, 4]})
{"ticks_run": 400, "budget_left": 179330}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [10, 37, 27, 0, 35, 4]})
{"ticks_run": 300, "budget_left": 179030}
physim.run({"segments": [{"t": 400, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}], "channels": [10, 37, 27, 0, 35, 4]})
{"ticks_run": 400, "budget_left": 178630}
physim.run({"segments": [{"t": 200, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels": "all"})
physim.run({"segments": [{"t": 200, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 178430}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
s0 jumped to +0.34 under all+1 (2 out of 2 all+1 runs showed s0 elevated — promising!). Continuing alternation.
{"ticks_run": 200, "budget_left": 178230}
physim.run({"segments": [{"t": 200, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels": [0, 3, 10, 38, 2, 30]})
{"ticks_run": 200, "budget_left": 178030}
physim.reset({})
{"budget_left": 177830}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 177730}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 177630}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 177530}
physim.reset({})
{"budget_left": 177330}
physim.run({"segments": [{"t": 840, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [12, 22, 24, 36, 3, 7], "series": true, "max_numbers": 360, "stride": 14})
{"ticks_run": 840, "budget_left": 176490}
physim.reset({})
Fast-settle curves captured — they're damped oscillations (e.g. s24 swings +0.33→−0.47→−0.38 with ~350-tick period). Now the slow channels over a longer window.
physim.reset({})
Fast-settle curves captured — they're damped oscillations (e.g. s24 swings +0.33→−0.47→−0.38 with ~350-tick period). Now the slow channels over a longer window.
{"budget_left": 176290}
physim.run({"segments": [{"t": 1200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [15, 30, 32, 38, 10, 0], "series": true, "max_numbers": 360, "stride": 20})
{"ticks_run": 1200, "budget_left": 175090}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 174890}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 15, 35, 4, 39, 38], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 600, "budget_left": 174290}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 30, 11, 23, 27, 1], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 600, "budget_left": 173690}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 31, 14, 25, 21, 16], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 600, "budget_left": 173090}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [34, 28, 35, 0, 15, 39], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 600, "budget_left": 172490}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [2, 5, 8, 9, 13, 17], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 600, "budget_left": 171890}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 19, 20, 26, 29, 33], "series": true, "max_numbers": 360, "stride": 10})
{"ticks_run": 600, "budget_left": 171290}
Write: /app/model.md
Enough passive data. Let me consolidate the quantitative model into my workspace before requesting contracts.
physim.ready({})
physim.ready({})
{"phase": "answer"}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36]})
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": 0.095, "low": -0.01, "high": 0.19}, {"id": 1, "mean": -0.745, "low": -0.79, "high": -0.69}, {"id": 2, "mean": 0.876, "low": 0.84, "high": 0.91}, {"id": 3, "mean": -0.655)
{"received": 20}
physim.submit_theory({"code": "BASE = [-0.556, -0.270, 0.037, -0.208, -0.408, -0.131, -0.617, 0.223,\n        -0.680, 0.087, -1.000, 0.277, -0.616, -0.748, 0.553, -0.368,\n        -0.868, -0.215, -0.655, -0.428, -0.600, -)
Write: /root/.vf-claude/f864442cd7404ce88462e3be8b741ed4/projects/-app/memory/physim-rollout-findings.md
Both submissions are recorded. Let me save a brief project memory and wrap up.
Write: /root/.vf-claude/f864442cd7404ce88462e3be8b741ed4/projects/-app/memory/MEMORY.md
**Done — all 20 prediction contracts answered and a bonus executable theory submitted.**

## What the system turned out to be

After ~29k ticks of experiments, the hidden system is an **autonomous stochastic network whose inputs are almost entirely inert**. The evidence:

- Every apparent "port response" from my initial probe sweep failed replication. Repeated pulses, square waves, and time-lockin
anthropic/claude-fable-5 · C2 seed 1 · tier tools · accuracy 0.75 · theory 0.71 · budget 9%

S1=0.93 · S2=0.90 · S3=0.49 · S4=0.94 · coverage 0.80 · 116 nodes

Narrative experiment log

timeline
  1. 2× free run (900 ticks; 300 ticks, all inputs 0).
  2. Single-port probe (200 ticks; port 0 at +0.06, 200t) — ch24 -0.56→+0.32.
  3. Free run (200 ticks; 200 ticks, all inputs 0) — ch24 +0.32→-0.51.
  4. 11× single-port probe (3,450 ticks; port 1 at +0.06, 250t) — ch21 -0.57→-0.04.
  5. Free run (400 ticks; 400 ticks, all inputs 0) — ch21 -0.04→-0.57, ch13 -0.30→-0.58.
  6. 5× single-port probe (2,100 ticks; port 0 at -0.12, 200t).
  7. Free run (400 ticks; 400 ticks, all inputs 0).
  8. 2× drive → release (800 ticks; drive +0.12 for 200t, release 200t) — ch29 -0.10→+0.31.
  9. 4× single-port probe (1,050 ticks; port 4 at -0.12, 200t) — ch4 -0.73→+0.03, ch11 -0.53→-0.17, ch0 +0.58→+0.77.
  10. Reset to fresh initial conditions (−200 ticks).
  11. Free run (250 ticks; 250 ticks, all inputs 0).
  12. 11× drive → release (10,650 ticks; drive +0.12 for 1200t, release 150t) — ch20 +0.72→+0.14, ch29 +0.32→-0.11.
  13. Reset to fresh initial conditions (−200 ticks).
  14. Drive → release (400 ticks; drive +0.06 for 250t, release 150t).
  15. Ended exploration → received 20 prediction contracts.
  16. Submitted 20 contract answers.
  17. Submitted an executable theory (1,813 chars).
  18. Submitted an executable theory (1,813 chars).

Agent-written files (its instruments & theories)

app/exp/model.md (2,177 chars)
# Working model (before contracts)

## Reliable facts
1. Baselines (unique global attractor, all draws identical, noise sd~0.05):
   0:0.775, 1:-0.948, 2:0.183, 3:-0.178, 4:-0.717, 5:-0.507, 6:-0.620, 7:-0.833,
   8:-0.408, 9:0.198, 10:-0.661, 11:-0.518, 12:-0.385, 13:-0.560, 14:-0.862, 15:0.640,
   16:-0.077, 17:0.122, 18:0.730, 19:-0.400, 20:0.749(latch-high), 21:-0.570, 22:-0.508,
   23:0.321, 24:-0.539, 25:0.228, 26:0.464, 27:-0.898, 28:0.481, 29:0.318(latch-high),
   30:-0.718, 31:-0.505, 32:0.313, 33:0.763, 34:0.442, 35:-0.401, 36:-0.673, 37:-0.877,
   38:0.560, 39:0.075
2. Latches: ch20 = {high 0.749, low 0.135} controlled by port1 sign; ch29 = {high 0.318,
   low -0.113} by port2. Fresh draw -> high. Flip needs roughly |u|*t >= ~20-25 (15@1.0 no,
   44@0.5 yes, ~100@0.25 yes, ~100@0.1 yes noise-assisted). Flip itself <4 ticks. Persistent.
3. All other responses are TRANSIENT EVENTS: stereotyped slow pulses (width ~150-250 ticks),
   latency stochastic (60-850+ ticks), can fail entirely; also off-events after release.
   System returns to baseline after events even under sustained drive.
4. Port->channel event map (peak size approx, direction):
   p0+: ch24 (to ~+0.6), ch7 (to ~-0.2..-0.25)
   p0-: ch4 (to ~+0.7), ch7, ch14, ch28(off-dip to ~-0.36), ch11 small
   p1-: transients ch7/ch11/ch26/ch28 + latch20 reset
   p4+: ch21 (to ~0.0), ch0 (to ~0.18 seen once), ch1 (to ~-0.58 once), ch20 analog dip
        (~0.4, incl. off-dip), single pulse
   p5+: ch38 (to ~-0.6), ch25 (to ~-0.63), ch33 (to ~-0.2, can repeat ~400t period),
        ch36 (to ~+0.08), ch3 (to ~+0.2), ch14 (to ~-0.48), ch12 small
   p6+: ch13 (to ~-0.30), ch27 small
   p6-: ch0 (to ~0.58 once)
   p7+: ch21 (to ~-0.04), ch13 (to ~-0.30)
   p7-: ch4 (to ~+0.03..0.76), ch11 (to ~-0.11), ch28 (dip), ch7?, ch14?
5. Noise sd ~0.045-0.06 on every channel at rest AND during drives (events change mean,
   not local sd much; but sd over a window containing an event is inflated).

## Strategy for contracts
Replicate each protocol 3-8x on fresh/settled state; report mean of statistic; interval
from replicate spread + noise floor. Latch-only protocols are deterministic -> tight.
app/exp/notes.md (2,110 chars)
# System notes (draw #1)

40 sensors, 8 ports. Noise sd ~0.05 on every sensor. Baselines stationary.
Sensor readings not clipped at ±1 (can read -1.07) — likely tanh(state)+noise.

## Baseline (draw 1, zero input, settled)
ch: 0:0.77, 1:-0.95, 2:0.17, 3:-0.18, 4:-0.71, 5:-0.51, 6:-0.63, 7:-0.83,
8:-0.42, 9:0.20, 10:-0.66, 11:-0.52, 12:-0.39, 13:-0.57, 14:-0.86, 15:0.64,
16:-0.08, 17:0.13, 18:0.74, 19:-0.40, 20:0.74, 21:-0.56, 22:-0.51, 23:0.31,
24:-0.55, 25:0.22, 26:0.46, 27:-0.91, 28:0.48, 29:0.31, 30:-0.71, 31:-0.51,
32:0.29, 33:0.76, 34:0.44, 35:-0.40, 36:-0.66, 37:-0.87, 38:0.56, 39:0.08

## Port → sensor map (steady shifts at |u|=1, 200-tick drive)
- p0+ : ch24 -0.55→+0.32 (at u=0.5!)  [second-order: overshoot after release, peak ~0.6 approx 40 ticks after off, decay tau~60-80]
- p0- : ch4 -0.71→+0.69, ch7 -0.83→-0.67, ch14 small
- p1+ : SET latch ch20 → ~0.75 (flip in ~30 ticks, persists)
- p1- : RESET latch ch20 → ~0.13 (persists); small transients ch7/ch11/ch26/ch28?
- p2+ : SET latch ch29 → ~0.32
- p2- : RESET latch ch29 → ~-0.11
- p3  : inert at ±1 (200 ticks)
- p4+ : ch0 0.77→0.18, ch1 -0.95→-0.58, ch20 0.74→0.45 (analog, recovers), ch21 -0.56→-0.34
- p4- : inert
- p5+ : ch3 -0.18→0.0, ch12 -0.39→-0.22, ch14 -0.86→-0.56, ch25 0.22→-0.53,
        ch33 0.76→0.32, ch36 -0.66→-0.19, ch38 0.56→-0.57
- p5- : inert
- p6+ : ch13 -0.57→-0.30, ch27 -0.91→-0.83?, ch24 -0.55→-0.44?
- p6- : ch0 0.77→0.58
- p7+ : ch21 -0.56→-0.04, ch13 -0.57→-0.30
- p7- : ch4 -0.71→+0.03, ch11 -0.52→-0.17, ch28 0.48→0.31

Latches: ch20 states {0.74, 0.13}; ch29 states {0.32, -0.11}. Flip ~30 ticks at |u|=1.
Relax tau for analog channels ~30-80 ticks (ch21 ~40, ch24 ~60-80 w/ overshoot).

Sensors never seen to respond: 2,5,6,8,9,10,15,16,17,18,19,22,23,26,30,31,32,34,35,37,39

## TODO
- fresh-draw baseline variability (reset x2-3)
- dose-response: p0+/p0-, p4+, p5+, p7± at 0.125/0.25/0.5/0.75/1
- latch flip thresholds (amplitude & duration)
- step series / time constants per channel
- long-drive adaptation (800 ticks)
- interactions: p4+ & p7+ on ch21; p0- & p7- on ch4
- sd responses anywhere?
app/.vf-claude/90a1a256ba5e4f1b8b7614448debb19c/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T17:56:59.426Z",
  "machineID": "18e7fc58e858ed433140d2250e228bc8f7c9d956641809c2520f6e70e41a8cee",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "0412b786d223847235c240be419d3faf7054c477027e36e3bf347df35f4e8f19"
}

Executable theory

accuracy 0.708 · per-stratum {'S1': 0.89, 'S2': 0.88, 'S3': 0.44, 'S4': 0.89, 'S5': 0.44} · 1,813 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.7740.0870.00.967
1S1-0.6780.0670.10.910
2S1-0.3970.0490.10.900
3S1-0.8590.0660.10.948
4S2-0.1740.0370.10.883
5S2+0.0500.0340.00.975
6S2-0.5230.0790.30.744
7S2+0.0490.0340.00.979
8S3-0.8620.0660.00.999
9S3+0.2260.0345.20.005
10S3+0.5580.0730.10.935
11S3+0.2160.0344.90.007
12S4-0.1720.0370.20.821
13S4-0.3820.0530.00.988
14S4+0.1980.0460.00.973
15S4-0.8780.0890.00.980
16S5+0.0490.0340.00.972
17S5+0.3580.0349.20.000
18S5+0.2090.0344.80.008
19S5+0.0500.0340.01.000
Verbatim log (115 entries)
physim.status({})
physim.status({})
{"budget_left": 200000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start with a baseline observation of the system at zero input, then probe each input port.
{"ticks_run": 300, "budget_left": 199700}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 4, 15, 20, 33], "series": true, "max_numbers": 360})
All 40 sensors sit at nonzero levels with ~0.05 noise. Let me check stability over a longer window and grab time series for a few channels.
{"ticks_run": 600, "budget_left": 199100}
Baseline is stationary — no drift over 600 ticks, noise sd ~0.05. Now I'll probe each input port with a step. First, let me set up a workspace to log results.
physim.run({"segments": [{"t": 200, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 198900}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24], "series": true})
Port 0 at +0.5 moved sensor 24 from -0.56 to +0.32; everything else unchanged. Sparse coupling. Let me check relaxation back at zero.
{"ticks_run": 200, "budget_left": 198700}
physim.run({"segments": [{"t": 250, "u": [0, 0.5, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Sensor 24 shows second-order dynamics: it kept rising ~40 ticks after the input was released (peaking ~0.6), then decayed to baseline with tau ~60-80 ticks. Now scanning the remaining ports.
physim.run({"segments": [{"t": 250, "u": [0, 0.5, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Sensor 24 shows second-order dynamics: it kept rising ~40 ticks after the input was released (peaking ~0.6), then decayed to baseline with tau ~60-80 ticks. Now scanning the remaining ports.
{"ticks_run": 250, "budget_left": 198450}
physim.run({"segments": [{"t": 200, "u": [0, 1.0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 200, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 198250}
physim.run({"segments": [{"t": 200, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 1 appears inert even at full drive. Scanning ports 2 and onward.
{"ticks_run": 200, "budget_left": 198050}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 197850}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 197650}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
Port 4 is active: moves sensors 0, 1, 20, 21. Continuing scan with settle periods.
{"ticks_run": 450, "budget_left": 197200}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
Port 5 is strongly active: moves sensors 3, 12, 14, 25, 33, 36, 38 (25 and 38 flip sign). Continuing with ports 6 and 7.
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
Port 5 is strongly active: moves sensors 3, 12, 14, 25, 33, 36, 38 (25 and 38 flip sign). Continuing with ports 6 and 7.
{"ticks_run": 500, "budget_left": 196700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 196200}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [13, 21, 24, 27, 33], "series": true, "max_numbers": 300})
Port 7 drives sensor 21 strongly. Notably, sensor 13 (port 6's target) is still elevated 500 ticks after port 6 was released — possible bistability. Checking relaxation.
{"ticks_run": 400, "budget_left": 195800}
physim.run({"segments": [{"t": 200, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Sensors 13 and 21 relax with tau ~30-40 ticks; port 7 evidently drives both 21 and 13. Now testing negative drives on all ports.
{"ticks_run": 200, "budget_left": 195600}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 0 negative hits completely different sensors (4 flips from -0.71 to +0.69, plus 7): responses are direction-dependent. Scanning negatives on remaining ports.
{"ticks_run": 450, "budget_left": 195150}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, -1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 450, "budget_left": 194700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, -1, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, -1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 194200}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 29, 7, 26, 28, 31], "series": true, "max_numbers": 300})
{"ticks_run": 400, "budget_left": 193800}
physim.run({"segments": [{"t": 200, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 29], "series": true, "max_numbers": 240})
{"ticks_run": 400, "budget_left": 193400}
physim.run({"segments": [{"t": 200, "u": [0, 0, 1, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [20, 29, 31, 26, 28], "series": true, "max_numbers": 240})
Port 1+ flips sensor 20 back high and it latches — a set/reset flip-flop. Now testing port 2+ on the still-low sensor 29.
{"ticks_run": 400, "budget_left": 193000}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, -1, 0, 0, 0]}], "channels": "all"})
Sensor 29 flipped back high via port 2+. Clear architecture: ports 1 and 2 are set/reset controls of latches read by sensors 20 and 29. Now the negative directions of ports 4-7.
{"ticks_run": 200, "budget_left": 192800}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, -1, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 192600}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 192400}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, -1]}], "channels": "all"})
{"ticks_run": 450, "budget_left": 191950}
Write: /app/exp/notes.md
Port 7- drives sensors 4, 11, 28. I now have a full port map. Let me save findings, then check how fresh draws differ — critical since contracts run on fresh draws.
Write: /app/exp/notes.md
Port 7- drives sensors 4, 11, 28. I now have a full port map. Let me save findings, then check how fresh draws differ — critical since contracts run on fresh draws.
physim.reset({})
{"budget_left": 191750}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 191500}
physim.run({"segments": [{"t": 150, "u": [0.125, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.25, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.375, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {)
physim.run({"segments": [{"t": 150, "u": [0.125, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.25, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.375, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {)
{"ticks_run": 1350, "budget_left": 190150}
physim.run({"segments": [{"t": 500, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24], "series": true, "max_numbers": 300})
The staircase revealed sensor 24 is not a simple static map: slow ramps produce no response (adaptation), while sharp/strong steps trigger a large slow excursion. Testing with a long clean step.
{"ticks_run": 850, "budget_left": 189300}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 1, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [38, 33, 25, 36, 14, 3], "series": true, "max_numbers": 360, "stride": 20})
{"ticks_run": 1200, "budget_left": 188100}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 1, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 20, 21], "series": true, "max_numbers": 320, "stride": 16})
{"ticks_run": 1100, "budget_left": 187000}
physim.run({"segments": [{"t": 250, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24, 4, 7], "series": true, "max_numbers": 300, "stride": 5})
{"ticks_run": 500, "budget_left": 186500}
physim.run({"segments": [{"t": 200, "u": [0, -0.25, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, -0.5, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "chann)
physim.run({"segments": [{"t": 200, "u": [0, -0.25, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, -0.5, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "chann)
{"ticks_run": 600, "budget_left": 185900}
physim.run({"segments": [{"t": 200, "u": [0, 0.25, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 15, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 235, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels":)
{"ticks_run": 500, "budget_left": 185400}
physim.run({"segments": [{"t": 400, "u": [0, -0.1, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 0, -0.5, 0, 0, 0, 0, 0]}, {"t": 240, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channel)
{"ticks_run": 800, "budget_left": 184600}
physim.run({"segments": [{"t": 600, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, -1]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels":)
{"ticks_run": 1800, "budget_left": 182800}
physim.reset({})
{"budget_left": 182600}
physim.run({"segments": [{"t": 250, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24, 7, 20, 29], "series": true, "max_numbers": 320, "stride": 5})
{"ticks_run": 400, "budget_left": 182200}
Write: /app/exp/model.md
physim.ready({})
{"phase": "answer"}
physim.reset({})
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": 0.777, "low": 0.72, "high": 0.83}, {"id": 1, "mean": -0.672, "low": -0.73, "high": -0.61}, {"id": 2, "mean": -0.402, "low": -0.46, "high": -0.34}, {"id": 3, "mean": -0.8)
{"received": 20}
physim.submit_theory({"code": "BASE = [0.777,-0.948,0.183,-0.179,-0.717,-0.507,-0.620,-0.833,-0.408,0.199,\n        -0.661,-0.520,-0.383,-0.560,-0.862,0.640,-0.077,0.122,0.730,-0.402,\n        0.749,-0.570,-0.508,0.321,-0)
All 20 answers are in. Now the optional executable theory for the bonus — baselines, latch integrate-to-threshold dynamics, and matched noise:
physim.submit_theory({"code": "BASE = [0.777,-0.948,0.183,-0.179,-0.717,-0.507,-0.620,-0.833,-0.408,0.199,\n        -0.661,-0.520,-0.383,-0.560,-0.862,0.640,-0.077,0.122,0.730,-0.402,\n        0.749,-0.570,-0.508,0.321,-0)
All 20 answers are in. Now the optional executable theory for the bonus — baselines, latch integrate-to-threshold dynamics, and matched noise:
All 20 contracts answered and the executable theory submitted. Here's the summary of the investigation:

## What the system turned out to be

**Architecture discovered** (8 input ports, 40 sensors, ~0.05 Gaussian noise everywhere):

1. **A single global baseline attractor.** Every fresh draw settles to the same 40-sensor fingerprint (e.g. ch0 ≈ 0.777, ch14 ≈ -0.862, ch19 ≈ -0.402) within ~150 tick

openai--gpt-5.2--codex — C2 (2 rollouts, mean acc 0.774)

openai/gpt-5.2 · C2 seed 0 · tier tools · accuracy 0.82 · budget 13%

S1=0.71 · S2=0.73 · S3=0.91 · S4=0.91 · coverage 0.95 · 91 nodes

Narrative experiment log

timeline
  1. ✗ free run rejected: series observation limited to <=6 channels.
  2. 2× free run (1,000 ticks; 500 ticks, all inputs 0).
  3. Reset to fresh initial conditions (−200 ticks).
  4. Free run (300 ticks; 300 ticks, all inputs 0).
  5. Single-port probe (300 ticks; port 0 at +0.10, 300t) — ch30 +0.28→-0.46, ch15 -0.01→-0.40, ch38 +0.42→+0.63.
  6. Free run (300 ticks; 300 ticks, all inputs 0) — ch15 -0.40→+0.29, ch37 +0.30→+0.09.
  7. Reset to fresh initial conditions (−200 ticks).
  8. ✗ closed-loop policy rejected: t must be an int in [1, 5000].
  9. Reset to fresh initial conditions (−200 ticks).
  10. Ramp sweep (7,400 ticks; 7400 ticks, peak mean drive -0.28).
  11. Reset to fresh initial conditions (−200 ticks).
  12. Ramp sweep (7,400 ticks; 7400 ticks, peak mean drive -0.28).
  13. Reset to fresh initial conditions (−200 ticks).
  14. Ramp sweep (7,400 ticks; 7400 ticks, peak mean drive -0.28).
  15. Ended exploration → received 20 prediction contracts.
  16. Submitted 20 contract answers.

Agent-written files (its instruments & theories)

app/data/id_meta.json (629 chars)
{
  "base_seed": 123,
  "ticks": 10950,
  "n_inputs": 8,
  "schedule": [
    [
      "settle",
      400,
      1,
      [
        0.0
      ]
    ],
    [
      "prbs_small",
      2400,
      20,
      [
        -0.2,
        0.0,
        0.2
      ]
    ],
    [
      "rest1",
      200,
      1,
      [
        0.0
      ]
    ],
    [
      "prbs_med",
      2500,
      25,
      [
        -0.6,
        -0.2,
        0.0,
        0.2,
        0.6
      ]
    ],
    [
      "rest2",
      250,
      1,
      [
        0.0
      ]
    ],
    [
      "pulses",
      5200,
      1,
      [
        0.0
      ]
    ]
  ]
}
app/data/protocol2_202.json (9,324 chars)
[{"t": 400, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 100, "u_start": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], "u_end": [-0.24594000012201234, -0.09015054724094562, 0.5052082137223217, 0.2999866892535781, -0.31931841406240713, -0.09577321957067098, 0.1016173091892375, 0.5387821027802202]}, {"t": 100, "u_start": [-0.24594000012201234, -0.09015054724094562, 0.5052082137223217, 0.2999866892535781, -0.31931841406240713, -0.09577321957067098, 0.1016173091892375, 0.5387821027802202], "u_end": [-0.46016191134760853, 0.6632044318777746, -0.2953528747503972, 0.44521089504073497, 0.03958711350532251, -0.241733259368611, 0.09168569833931683, -0.022613866459067156]}, {"t": 100, "u_start": [-0.46016191134760853, 0.6632044318777746, -0.2953528747503972, 0.44521089504073497, 0.03958711350532251, -0.241733259368611, 0.09168569833931683, -0.022613866459067156], "u_end": [-0.5560456787531609, -0.08402793514090523, 0.6845488207397692, 0.25308652632946016, -0.6080761954321426, 0.32233722711417956, 0.3190203395516029, -0.008096268221820635]}, {"t": 100, "u_start": [-0.5560456787531609, -0.08402793514090523, 0.6845488207397692, 0.25308652632946016, -0.6080761954321426, 0.32233722711417956, 0.3190203395516029, -0.008096268221820635], "u_end": [-0.752958688621467, 0.08691070814844704, -0.3482504067986749, 0.0683338635386821, -0.19152518667029583, -0.1558825656371512, 0.7000198126549286, 0.7105032165284828]}, {"t": 100, "u_start": [-0.752958688621467, 0.08691070814844704, -0.3482504067986749, 0.0683338635386821, -0.19152518667029583, -0.1558825656371512, 0.7000198126549286, 0.7105032165284828], "u_end": [-0.5240549392943171, -0.4050041204363488, 0.7751686283042374, 0.08957958978359903, 0.30060345227143004, 0.1411339871258519, -0.6044266616829983, 0.08444433229053527]}, {"t": 100, "u_start": [-0.5240549392943171, -0.4050041204363488, 0.7751686283042374, 0.08957958978359903, 0.30060345227143004, 0.1411339871258519, -0.6044266616829983, 0.08444433229053527], "u_end": [-0.7309398931029059, -0.7983526051294314, -0.7684351969147661, 0.005375756768240647, -0.6572609664710841, -0.7438157913347923, -0.6453317996169586, 0.03865581919304195]}, {"t": 100, "u_start": [-0.7309398931029059, -0.7983526051294314, -0.7684351969147661, 0.005375756768240647, -0.6572609664710841, -0.7438157913347923, -0.6453317996169586, 0.03865581919304195], "u_end": [0.21200670831148694, -0.4552008981881384, 0.6641311418317533, -0.5089325389136552, -0.10699658177817317, 0.2238799913701377, 0.19856327895436543, -0.47199702148269246]}, {"t": 100, "u_start": [0.21200670831148694, -0.4552008981881384, 0.6641311418317533, -0.5089325389136552, -0.10699658177817317, 0.2238799913701377, 0.19856327895436543, -0.47199702148269246], "u_end": [-0.48505041695662465, -0.38954975695018224, 0.1064521973902961, 0.5417760290010316, -0.5227574435032507, -0.01939468636816455, -0.44697793268973385, 0.4477659904147593]}, {"t": 100, "u_start": [-0.48505041695662465, -0.38954975695018224, 0.1064521973902961, 0.5417760290010316, -0.5227574435032507, -0.01939468636816455, -0.44697793268973385, 0.4477659904147593], "u_end": [-0.167444230557251, -0.5528794590194398, 0.27613422762584605, 0.06350717058735678, 0.26263655126386865, -0.45108465731327263, -0.3762270367494555, -0.2853842924729696]}, {"t": 100, "u_start": [-0.167444230557251, -0.5528794590194398, 0.27613422762584605, 0.06350717058735678, 0.26263655126386865, -0.45108465731327263, -0.3762270367494555, -0.2853842924729696], "u_end": [0.5502071791072491, -0.3356832905723236, 0.30220996598576955, 0.20574140670542862, 0.2735975952229295, -0.09176495842917942, 0.40832818095314916, -0.029656426151540183]}, {"t": 100, "u_start": [0.5502071791072491, -0.3356832905723236, 0.30220996598576955, 0.20574140670542862, 0.2735975952229295, -0.09176495842917942, 0.40832818095314916, -0.029656426151540183], "u_end": [-0.3851826227121752, -0.0015486123896879533, 0.29828562196849817, -0.6093016361672412, 0.36836967934563947, 0.015197311616651055, 0.6465362080602963, 0.0385018760031437]}, {"t": 100, "u_start": [-0.3851826227121752, -0.0015486123896879533, 0.29828562196849817, -0.6093016361672412, 0.36836967934563947, 0.015197311616651055, 0.6465362080602963, 0.0385018760031437], "u_end": [0.6108590816532813, -0.5147511691948607, -0.5855359705854449, -0.010741892499792294, -0.7942103242813874, -0.006878315791837841, -0.6312870378697089, 0.5323203273930353]}, {"t": 100, "u_start": [0.6108590816532813, -0.5147511691948607, -0.5855359705854449, -0.010741892499792294, -0.7942103242813874, -0.006878315791837841, -0.6312870378697089, 0.5323203273930353], "u_end": [0.41856472191465666, -0.07598357062951033, -0.5945048605292232, 0.4993832877827289, 0.7956282078209402, 0.022100086190481427, -0.2622411086795634, -0.14298203424429246]}, {"t": 100, "u_start": [0.41856472191465666, -0.07598357062951033, -0.5945048605292232, 0.4993832877827289, 0.7956282078209402, 0.022100086190481427, -0.2622411086795634, -0.14298203424429246], "u_end": [0.46569021524657783, -0.4800659978235931, -0.526481750187633, -0.468599332478888, 0.5642185340729142, 0.3763755100062802, 0.7199445098061543, 0.6815437692755839]}, {"t": 100, "u_start": [0.46569021524657783, -0.4800659978235931, -0.526481750187633, -0.468599332478888, 0.5642185340729142, 0.3763755100062802, 0.7199445098061543, 0.6815437692755839], "u_end": [0.08953146562205205, -0.3943022404860278, 0.2231133789662787, 0.5665182954981078, 0.5379915287915498, -0.7564665944603344, 0.7786512707290785, -0.08515540605309035]}, {"t": 100, "u_start": [0.08953146562205205, -0.3943022404860278, 0.2231133789662787, 0.5665182954981078, 0.5379915287915498, -0.7564665944603344, 0.7786512707290785, -0.08515540605309035], "u_end": [-0.42577091920321114, -0.34933158440668066, 0.7002527585292102, -0.3149831040906126, -0.14970959112286886, -0.5905174233732231, -0.05347429820494809, 0.23300718120871844]}, {"t": 100, "u_start": [-0.42577091920321114, -0.34933158440668066, 0.7002527585292102, -0.3149831040906126, -0.14970959112286886, -0.5905174233732231, -0.05347429820494809, 0.23300718120871844], "u_end": [-0.04870241151371635, -0.2831046949832595, 0.15373145937665067, -0.18279870682719435, -0.22876899182773147, -0.2782665172555475, -0.07428264345427316, -0.07279193156188113]}, {"t": 100, "u_start": [-0.04870241151371635, -0.2831046949832595, 0.15373145937665067, -0.18279870682719435, -0.22876899182773147, -0.2782665172555475, -0.07428264345427316, -0.07279193156188113], "u_end": [0.7457173647373563, -0.49429256594571386, 0.558069374951988, 0.44213449614745204, 0.4853502791488562, 0.6908563929683103, -0.46857914935928113, 0.772056414915337]}, {"t": 100, "u_start": [0.7457173647373563, -0.49429256594571386, 0.558069374951988, 0.44213449614745204, 0.4853502791488562, 0.6908563929683103, -0.46857914935928113, 0.772056414915337], "u_end": [-0.23232042815674614, 0.7994766112297265, -0.3362837173291084, -0.3634250395260512, -0.03573510634791999, 0.14291847494975607, -0.6717143343798274, -0.4395022731301248]}, {"t": 100, "u_start": [-0.23232042815674614, 0.7994766112297265, -0.3362837173291084, -0.3634250395260512, -0.03573510634791999, 0.14291847494975607, -0.6717143343798274, -0.4395022731301248], "u_end": [0.2563869477999581, 0.24652103901192057, 0.11673800107658783, 0.08845065946044817, 0.3768347728477286, 0.6460449115309053, -0.4019762833397817, 0.053261658039887694]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [-1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, -1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, -1.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, -1.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, -1.0, 0.0, 0.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 0.0, -1.0, 0.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, -1.0, 0.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0]}, {"t": 100, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 150, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, -1.0]}, {"t": 200, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}]
app/data/protocol2_202_meta.json (103 chars)
{
  "seed": 202,
  "n_segments": 54,
  "ticks": 7400,
  "note": "Ramped random + single-input pulses"
}
app/data/protocol_123.json (15,484 chars)
[{"t": 400, "u": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]}, {"t": 20, "u": [-0.2, 0.2, 0.0, -0.2, 0.2, -0.2, -0.2, -0.2]}, {"t": 20, "u": [0.0, -0.2, 0.0, 0.2, 0.0, 0.2, 0.0, -0.2]}, {"t": 20, "u": [0.2, 0.2, 0.2, 0.2, -0.2, 0.0, -0.2, -0.2]}, {"t": 20, "u": [-0.2, 0.2, 0.2, -0.2, 0.0, 0.2, -0.2, 0.0]}, {"t": 20, "u": [0.0, 0.2, 0.2, -0.2, 0.2, 0.2, -0.2, 0.0]}, {"t": 20, "u": [0.2, -0.2, -0.2, -0.2, -0.2, 0.0, -0.2, 0.0]}, {"t": 20, "u": [0.0, -0.2, 0.0, -0.2, -0.2, 0.0, -0.2, 0.2]}, {"t": 20, "u": [-0.2, 0.2, -0.2, 0.0, 0.0, 0.2, 0.0, 0.2]}, {"t": 20, "u": [0.0, -0.2, -0.2, 0.2, -0.2, 0.2, 0.0, -0.2]}, {"t": 20, "u": [0.0, 0.2, 0.0, 0.2, 0.2, -0.2, 0.0, 0.0]}, {"t": 20, "u": [0.0, -0.2, 0.0, 0.0, 0.2, -0.2, 0.0, 0.2]}, {"t": 20, "u": [0.2, -0.2, 0.2, -0.2, 0.0, -0.2, 0.2, -0.2]}, {"t": 20, "u": [0.0, 0.0, 0.2, 0.0, 0.2, -0.2, -0.2, -0.2]}, {"t": 20, "u": [0.0, -0.2, 0.0, 0.0, 0.0, 0.0, -0.2, 0.0]}, {"t": 20, "u": [0.0, 0.2, -0.2, 0.0, -0.2, -0.2, 0.0, 0.2]}, {"t": 20, "u": [0.0, 0.0, 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app/data/protocol_123_meta.json (99 chars)
{
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app/data/run_g0_0-5.json (11,791 chars)
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app/data/run_g1_6-11.json (11,301 chars)
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  },
  "series_stride": 30
}
app/policies/id_policy.py (2,263 chars)
# Used with physim_run_policy: defines policy(t, y, mem) -> 8 floats in [-1, 1].
# Deterministic pseudo-random program with multiple amplitude phases + saturation pulses.


def _lcg_step(x: int) -> int:
    # 32-bit LCG (Numerical Recipes)
    return (1664525 * x + 1013904223) & 0xFFFFFFFF


def _pick_level(x: int, levels):
    return float(levels[x % len(levels)])


def _phase_schedule():
    # (name, duration, hold, levels)
    return [
        ("settle", 400, 1, [0.0]),
        ("prbs_small", 2400, 20, [-0.2, 0.0, 0.2]),
        ("rest1", 200, 1, [0.0]),
        ("prbs_med", 2500, 25, [-0.6, -0.2, 0.0, 0.2, 0.6]),
        ("rest2", 250, 1, [0.0]),
        # pulses: 8 inputs * (150 on + 150 off + 150 on - + 200 off)
        ("pulses", 8 * (150 + 150 + 150 + 200), 1, [0.0]),
    ]


def policy(t, y, mem):
    if not mem:
        mem["base_seed"] = 123
        mem["x"] = [(mem["base_seed"] + 0x9E3779B9 * (i + 1)) & 0xFFFFFFFF for i in range(8)]
        mem["u"] = [0.0] * 8
        mem["phase_idx"] = 0
        mem["phase_t"] = 0
        mem["schedule"] = _phase_schedule()

    schedule = mem["schedule"]
    phase_name, phase_dur, hold, levels = schedule[mem["phase_idx"]]

    # Advance phase.
    if mem["phase_t"] >= phase_dur:
        mem["phase_idx"] += 1
        mem["phase_t"] = 0
        phase_name, phase_dur, hold, levels = schedule[mem["phase_idx"]]
        # reset u on phase boundary
        mem["u"] = [0.0] * 8

    pt = mem["phase_t"]

    if phase_name.startswith("prbs"):
        if pt % hold == 0:
            # update all inputs
            for i in range(8):
                mem["x"][i] = _lcg_step(int(mem["x"][i]))
                mem["u"][i] = _pick_level(int(mem["x"][i] >> 8), levels)

    elif phase_name.startswith("rest") or phase_name == "settle":
        mem["u"] = [0.0] * 8

    elif phase_name == "pulses":
        # Determine which input and which substage.
        cycle = 150 + 150 + 150 + 200
        i = int(pt // cycle)
        k = int(pt % cycle)
        u = [0.0] * 8
        if k < 150:
            u[i] = 1.0
        elif k < 300:
            u[i] = 0.0
        elif k < 450:
            u[i] = -1.0
        else:
            u[i] = 0.0
        mem["u"] = u

    mem["phase_t"] += 1
    return mem["u"]
app/scripts/gen_id_inputs.py (2,001 chars)
import json
import numpy as np


def lcg_step(x: int) -> int:
    return (1664525 * x + 1013904223) & 0xFFFFFFFF


def pick_level(x: int, levels):
    return float(levels[x % len(levels)])


def schedule():
    return [
        ("settle", 400, 1, [0.0]),
        ("prbs_small", 2400, 20, [-0.2, 0.0, 0.2]),
        ("rest1", 200, 1, [0.0]),
        ("prbs_med", 2500, 25, [-0.6, -0.2, 0.0, 0.2, 0.6]),
        ("rest2", 250, 1, [0.0]),
        ("pulses", 8 * (150 + 150 + 150 + 200), 1, [0.0]),
    ]


def generate(base_seed=123):
    sched = schedule()
    total = sum(d for _, d, _, _ in sched)

    x = [(base_seed + 0x9E3779B9 * (i + 1)) & 0xFFFFFFFF for i in range(8)]
    u = np.zeros((total, 8), dtype=np.float32)

    t0 = 0
    for name, dur, hold, levels in sched:
        for k in range(dur):
            if name.startswith('prbs'):
                if k % hold == 0:
                    for i in range(8):
                        x[i] = lcg_step(int(x[i]))
                        val = pick_level(int(x[i] >> 8), levels)
                        u[t0 + k, i] = val
                    # hold values for subsequent ticks
                    if hold > 1:
                        u[t0 + k:t0 + min(k + hold, dur), :] = u[t0 + k, :]
            elif name == 'pulses':
                cycle = 150 + 150 + 150 + 200
                i = k // cycle
                kk = k % cycle
                if kk < 150:
                    u[t0 + k, i] = 1.0
                elif kk < 300:
                    pass
                elif kk < 450:
                    u[t0 + k, i] = -1.0
                else:
                    pass
            else:
                pass
        t0 += dur

    meta = {"base_seed": base_seed, "ticks": int(total), "n_inputs": 8, "schedule": sched}
    return u, meta


if __name__ == '__main__':
    u, meta = generate()
    np.save('data/id_u.npy', u)
    with open('data/id_meta.json', 'w') as f:
        json.dump(meta, f, indent=2)
    print(json.dumps(meta, indent=2))
app/scripts/make_protocol.py (2,363 chars)
import argparse, json
import numpy as np


def clip(x):
    return float(np.clip(x, -1.0, 1.0))


def prbs_sequence(rng, n_steps, n_inputs, levels):
    u = rng.choice(levels, size=(n_steps, n_inputs))
    return u


def segments_from_steps(u_steps, hold):
    segs = []
    for row in u_steps:
        segs.append({"t": int(hold), "u": [clip(v) for v in row.tolist()]})
    return segs


def expand_segments(segments, n_inputs):
    u = np.zeros((sum(s["t"] for s in segments), n_inputs), dtype=np.float32)
    idx = 0
    for s in segments:
        t = int(s["t"])
        vec = np.array(s["u"], dtype=np.float32)
        u[idx:idx+t] = vec
        idx += t
    return u


def build_protocol(seed: int):
    rng = np.random.default_rng(seed)

    segs = []
    # settle
    segs.append({"t": 400, "u": [0.0] * 8})

    # small-signal PRBS
    hold = 20
    u_steps = prbs_sequence(rng, n_steps=120, n_inputs=8, levels=[-0.2, 0.0, 0.2])
    segs.extend(segments_from_steps(u_steps, hold))

    segs.append({"t": 200, "u": [0.0] * 8})

    # medium-signal PRBS
    hold = 25
    u_steps = prbs_sequence(rng, n_steps=100, n_inputs=8, levels=[-0.6, -0.2, 0.0, 0.2, 0.6])
    segs.extend(segments_from_steps(u_steps, hold))

    segs.append({"t": 250, "u": [0.0] * 8})

    # per-input saturation pulses (one at a time)
    for i in range(8):
        u = [0.0] * 8
        u[i] = 1.0
        segs.append({"t": 150, "u": u})
        u = [0.0] * 8
        segs.append({"t": 150, "u": u})
        u = [0.0] * 8
        u[i] = -1.0
        segs.append({"t": 150, "u": u})
        u = [0.0] * 8
        segs.append({"t": 200, "u": u})

    return segs


def main():
    ap = argparse.ArgumentParser()
    ap.add_argument('--seed', type=int, default=1)
    ap.add_argument('--out', type=str, default='data/protocol.json')
    args = ap.parse_args()

    segs = build_protocol(args.seed)
    with open(args.out, 'w') as f:
        json.dump(segs, f)

    u = expand_segments(segs, 8)
    np.save(args.out.replace('.json', '_u.npy'), u)
    meta = {
        'seed': args.seed,
        'ticks': int(u.shape[0]),
        'n_inputs': 8,
        'note': 'Generated identification protocol'
    }
    with open(args.out.replace('.json', '_meta.json'), 'w') as f:
        json.dump(meta, f, indent=2)

    print(json.dumps(meta, indent=2))


if __name__ == '__main__':
    main()
app/scripts/make_protocol2.py (1,649 chars)
import argparse, json
import numpy as np


def clip(v):
    return float(np.clip(v, -1.0, 1.0))


def main():
    ap = argparse.ArgumentParser()
    ap.add_argument('--seed', type=int, default=202)
    ap.add_argument('--segments', type=int, default=20)
    ap.add_argument('--seg_ticks', type=int, default=100)
    ap.add_argument('--out', type=str, default='data/protocol2.json')
    args = ap.parse_args()

    rng = np.random.default_rng(args.seed)

    segs = []
    segs.append({'t': 400, 'u': [0.0]*8})

    # ramps to random endpoints
    u_prev = np.zeros(8)
    for _ in range(args.segments):
        u_next = rng.uniform(-0.8, 0.8, size=8)
        segs.append({'t': int(args.seg_ticks), 'u_start': [clip(x) for x in u_prev.tolist()], 'u_end': [clip(x) for x in u_next.tolist()]})
        u_prev = u_next

    segs.append({'t': 200, 'u': [0.0]*8})

    # one-at-a-time pulses
    for i in range(8):
        u = [0.0]*8
        u[i] = 1.0
        segs.append({'t': 150, 'u': u})
        segs.append({'t': 100, 'u': [0.0]*8})
        u = [0.0]*8
        u[i] = -1.0
        segs.append({'t': 150, 'u': u})
        segs.append({'t': 200, 'u': [0.0]*8})

    with open(args.out, 'w') as f:
        json.dump(segs, f)

    meta = {
        'seed': args.seed,
        'n_segments': len(segs),
        'ticks': int(sum(s['t'] for s in segs)),
        'note': 'Ramped random + single-input pulses'
    }
    with open(args.out.replace('.json', '_meta.json'), 'w') as f:
        json.dump(meta, f, indent=2)

    print(json.dumps(meta, indent=2))
    print('---SEGMENTS_JSON---')
    print(json.dumps(segs))


if __name__ == '__main__':
    main()

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.0770.0604.20.015
1S1-0.7470.0880.00.983
2S1+0.8790.0770.10.949
3S1-0.6530.0730.10.887
4S2-0.4430.0672.10.120
5S2+0.0510.0390.00.984
6S2-0.3780.0520.00.961
7S2+0.0500.0340.20.856
8S3+0.5440.0740.10.945
9S3+0.0500.0340.10.872
10S3-0.7430.0880.00.970
11S3+0.0500.0340.20.856
12S4+0.2750.0620.20.788
13S4-0.7440.0880.00.957
14S4-0.7380.0880.00.979
15S4+0.5480.0740.10.900
16S5+0.0500.0340.20.854
17S5+0.0500.0340.00.991
18S5+0.0480.0340.10.931
19S5+0.0500.0370.40.662
Verbatim log (19 entries)
{"budget_left": 200000, "phase": "explore"}
{"error": "series observation limited to <=6 channels"}
{"ticks_run": 500, "budget_left": 199000}
{"ticks_run": 500, "budget_left": 198500}
{"budget_left": 198300}
{"ticks_run": 300, "budget_left": 198000}
{"ticks_run": 300, "budget_left": 197700}
{"ticks_run": 300, "budget_left": 197400}
{"budget_left": 197200}
{"error": "t must be an int in [1, 5000]"}
{"budget_left": 197000}
{"budget_left": 189400}
{"ticks_run": 7400, "budget_left": 182000}
{"budget_left": 181800}
{"ticks_run": 7400, "budget_left": 174400}
{"phase": "answer"}
{"error": "exploration is over; reply with the answers object"}
{"received": 20}
Submitted predictions for all 20 contracts via `physim_answer`.

Saved exploration artifacts:
- `data/run_g0_0-5.json`
- `data/run_g1_6-11.json`
- `policies/id_policy.py`
- `scripts/gen_id_inputs.py`
- `scripts/make_protocol2.py`
openai/gpt-5.2 · C2 seed 1 · tier tools · accuracy 0.73 · budget 16%

S1=0.85 · S2=0.87 · S3=0.48 · S4=0.97 · coverage 0.80 · 181 nodes

Narrative experiment log

timeline
  1. 2× free run (250 ticks; 200 ticks, all inputs 0).
  2. Reset to fresh initial conditions (−200 ticks).
  3. Closed-loop policy (1,200 ticks; 1200t).
  4. Reset to fresh initial conditions (−200 ticks).
  5. Single-port probe (500 ticks; port 0 at +0.12, 500t).
  6. Reset to fresh initial conditions (−200 ticks).
  7. Free run (500 ticks; 500 ticks, all inputs 0).
  8. Single-port probe (300 ticks; port 0 at +0.12, 300t) — ch21 -0.38→-0.56.
  9. Reset to fresh initial conditions (−200 ticks).
  10. Drive → release (800 ticks; drive +0.12 for 400t, release 400t).
  11. Reset to fresh initial conditions (−200 ticks).
  12. Drive → release (800 ticks; drive +0.12 for 400t, release 400t).
  13. Reset to fresh initial conditions (−200 ticks).
  14. Closed-loop policy (2,000 ticks; 2000t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Free run (400 ticks; 400 ticks, all inputs 0).
  17. Reset to fresh initial conditions (−200 ticks).
  18. Free run (400 ticks; 400 ticks, all inputs 0).
  19. Reset to fresh initial conditions (−200 ticks).
  20. Free run (400 ticks; 400 ticks, all inputs 0).
  21. Reset to fresh initial conditions (−200 ticks).
  22. Free run (400 ticks; 400 ticks, all inputs 0).
  23. Reset to fresh initial conditions (−200 ticks).
  24. Free run (400 ticks; 400 ticks, all inputs 0).
  25. Reset to fresh initial conditions (−200 ticks).
  26. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  27. Reset to fresh initial conditions (−200 ticks).
  28. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  31. Reset to fresh initial conditions (−200 ticks).
  32. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  35. Reset to fresh initial conditions (−200 ticks).
  36. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  37. Reset to fresh initial conditions (−200 ticks).
  38. Drive → release (2,600 ticks; drive +0.69 for 2200t, release 400t).
  39. Reset to fresh initial conditions (−200 ticks).
  40. Drive → release (800 ticks; drive +0.12 for 400t, release 400t).
  41. Ended exploration → received 20 prediction contracts.
  42. Submitted 20 contract answers.

Agent-written files (its instruments & theories)

app/data/answers.json (1,897 chars)
{"op": "answer", "answers": [{"id": 0, "mean": 0.7736500963587616, "low": 0.7087060685347961, "high": 0.838594124182727}, {"id": 1, "mean": -0.6734789881390236, "low": -0.7361841454229345, "high": -0.6107738308551127}, {"id": 2, "mean": -0.36909637631798753, "low": -0.4346440173891962, "high": -0.30354873524677883}, {"id": 3, "mean": -0.8647853086157962, "low": -0.9253199226808086, "high": -0.8042506945507837}, {"id": 4, "mean": -0.16785563764571804, "low": -0.2286733663520747, "high": -0.10703790893936137}, {"id": 5, "mean": 0.053720000000000004, "low": 0.023720000000000005, "high": 0.08372}, {"id": 6, "mean": -0.5120724975705008, "low": -0.5781920190826836, "high": -0.445952976058318}, {"id": 7, "mean": 0.053720000000000004, "low": 0.023720000000000005, "high": 0.08372}, {"id": 8, "mean": -0.8647853086301648, "low": -0.9253199226951773, "high": -0.8042506945651523}, {"id": 9, "mean": 0.053720000000000004, "low": 0.023720000000000005, "high": 0.08372}, {"id": 10, "mean": 0.5616939560128472, "low": 0.49110805975870875, "high": 0.6322798522669857}, {"id": 11, "mean": 0.053720000000000004, "low": 0.023720000000000005, "high": 0.08372}, {"id": 12, "mean": -0.1714730359041327, "low": -0.23229076461048936, "high": -0.11065530719777604}, {"id": 13, "mean": -0.3801936854605802, "low": -0.4448958289722136, "high": -0.3154915419489468}, {"id": 14, "mean": 0.19782808115058262, "low": 0.13948811736074126, "high": 0.256168044940424}, {"id": 15, "mean": -0.8856105220692777, "low": -0.9436193565257638, "high": -0.8276016876127916}, {"id": 16, "mean": 0.053720000000000004, "low": 0.023720000000000005, "high": 0.08372}, {"id": 17, "mean": 0.048760000000000005, "low": 0.018760000000000006, "high": 0.07876}, {"id": 18, "mean": 0.053720000000000004, "low": 0.023720000000000005, "high": 0.08372}, {"id": 19, "mean": 0.048760000000000005, "low": 0.018760000000000006, "high": 0.07876}]}
app/data/baseline/baseline_000.json (1,501 chars)
{
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}
app/data/baseline/baseline_001.json (1,495 chars)
{
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  "ticks_run": 400
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app/data/baseline/baseline_002.json (1,499 chars)
{
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  "tail_sd": {
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}
app/data/baseline/baseline_003.json (1,492 chars)
{
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}
app/data/baseline/baseline_004.json (1,500 chars)
{
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app/data/baseline/summary.json (3,506 chars)
{
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}
app/physim/__init__.py (64 chars)
"""Tools for experimenting with the MCP physim environment."""

app/physim/fit.py (1,838 chars)
from __future__ import annotations

from dataclasses import dataclass
from typing import Dict, Tuple

import numpy as np


@dataclass
class FirstOrderModel:
    a: float
    b: np.ndarray  # [8]
    c: float
    resid_sd: float


def fit_first_order_arx(y: np.ndarray, u: np.ndarray, ridge: float = 1e-3) -> FirstOrderModel:
    """
    Fits: y[t+1] = a*y[t] + b·u[t] + c + eps
    y: [T]
    u: [T,8]
    """
    if y.ndim != 1:
        raise ValueError("y must be 1D")
    if u.ndim != 2 or u.shape[1] != 8:
        raise ValueError("u must be [T,8]")
    t = min(len(y), u.shape[0])
    if t < 3:
        raise ValueError("need at least 3 samples")
    y = y[:t]
    u = u[:t]

    y0 = y[:-1]
    y1 = y[1:]
    x = np.concatenate([y0[:, None], u[:-1], np.ones((t - 1, 1))], axis=1)  # [t-1, 10]

    xtx = x.T @ x
    xtx += ridge * np.eye(xtx.shape[0])
    w = np.linalg.solve(xtx, x.T @ y1)

    a = float(w[0])
    b = w[1:9].astype(float)
    c = float(w[9])

    yhat = x @ w
    resid = y1 - yhat
    resid_sd = float(np.sqrt(np.mean(resid**2)))
    return FirstOrderModel(a=a, b=b, c=c, resid_sd=resid_sd)


def simulate_first_order(model: FirstOrderModel, u: np.ndarray, y0: float) -> np.ndarray:
    """Simulates y over time given u[T,8] and scalar y0. Returns y[T]."""
    t = u.shape[0]
    y = np.empty((t,), dtype=float)
    y[0] = y0
    for k in range(t - 1):
        y[k + 1] = model.a * y[k] + float(model.b @ u[k]) + model.c
    return y


def tail_mean(y: np.ndarray, window: int = 20) -> float:
    if len(y) < window:
        return float(np.mean(y))
    return float(np.mean(y[-window:]))


def tail_sd_of_mean(model: FirstOrderModel, window: int = 20) -> float:
    """
    Heuristic: treat eps as iid with sd=model.resid_sd; SD of mean over window.
    """
    return float(model.resid_sd / np.sqrt(window))

app/physim/io.py (739 chars)
from __future__ import annotations

import json
from pathlib import Path
from typing import Any, Dict


def ensure_dir(path: str | Path) -> Path:
    p = Path(path)
    p.mkdir(parents=True, exist_ok=True)
    return p


def save_json(path: str | Path, obj: Any) -> None:
    p = Path(path)
    p.parent.mkdir(parents=True, exist_ok=True)
    p.write_text(json.dumps(obj, indent=2, sort_keys=True))


def load_json(path: str | Path) -> Any:
    return json.loads(Path(path).read_text())


def normalize_series_dict(series: Dict[str, Any] | None) -> Dict[int, list[float]]:
    if not series:
        return {}
    out: Dict[int, list[float]] = {}
    for k, v in series.items():
        out[int(k)] = [float(x) for x in v]
    return out

app/physim/predict.py (1,792 chars)
from __future__ import annotations

from dataclasses import dataclass
from typing import Dict, Sequence

import numpy as np

from physim.fit import FirstOrderModel, simulate_first_order, tail_mean
from physim.segments import downsample_for_stride, expand_segments_u


def model_from_json(d: dict) -> FirstOrderModel:
    return FirstOrderModel(a=float(d["a"]), b=np.asarray(d["b"], dtype=float), c=float(d["c"]), resid_sd=float(d["resid_sd"]))


def convert_to_tick_model(model: FirstOrderModel, stride: int) -> FirstOrderModel:
    """
    Converts a stride-step ARX model into an approximate per-tick model assuming
    underlying dynamics are first-order and inputs are held constant within each
    stride interval during identification.
    """
    if stride <= 1:
        return model
    a_stride = float(model.a)
    if a_stride <= 0.0:
        # Fallback: don't attempt fractional powers; treat as per-tick already.
        return model

    a_tick = a_stride ** (1.0 / stride)
    if abs(1.0 - a_tick) < 1e-9:
        s = float(stride)
    else:
        s = (1.0 - a_stride) / (1.0 - a_tick)

    b_tick = model.b / s
    c_tick = model.c / s
    resid_sd_tick = model.resid_sd / np.sqrt(s)  # heuristic
    return FirstOrderModel(a=float(a_tick), b=b_tick, c=float(c_tick), resid_sd=float(resid_sd_tick))


def predict_tail_mean(
    model: FirstOrderModel,
    segments: Sequence[dict],
    stride: int,
    y0: float,
    window_ticks: int = 20,
) -> float:
    # simulate at tick resolution for correct last-20-ticks behavior
    m_tick = convert_to_tick_model(model, stride=stride)
    u = expand_segments_u(segments)  # [T,8] per-tick
    y = simulate_first_order(m_tick, u, y0=y0)
    return float(np.mean(y[-window_ticks:])) if len(y) >= window_ticks else float(np.mean(y))
app/physim/segments.py (2,659 chars)
from __future__ import annotations

from dataclasses import dataclass
from typing import Iterable, List, Sequence

import numpy as np


@dataclass(frozen=True)
class ExperimentSpec:
    seed: int
    pre_ticks: int = 200
    drive_ticks: int = 1000
    post_ticks: int = 200
    hold: int = 4
    amps: Sequence[float] = (0.3, 0.7, 1.0, 0.5)
    amp_breaks: Sequence[float] = (0.25, 0.6, 0.85, 1.0)


def _amp_for_step(step_frac: float, amps: Sequence[float], breaks: Sequence[float]) -> float:
    for amp, brk in zip(amps, breaks):
        if step_frac <= brk:
            return float(amp)
    return float(amps[-1])


def generate_experiment_segments(spec: ExperimentSpec) -> List[dict]:
    """
    Builds an open-loop excitation program as physim segments:
      pre: zeros
      drive: random piecewise-constant, changing each `hold` ticks, with staged amplitudes
      post: zeros
    """
    if spec.pre_ticks % spec.hold != 0:
        raise ValueError("pre_ticks must be divisible by hold")
    if spec.drive_ticks % spec.hold != 0:
        raise ValueError("drive_ticks must be divisible by hold")
    if spec.post_ticks % spec.hold != 0:
        raise ValueError("post_ticks must be divisible by hold")

    rng = np.random.RandomState(spec.seed)
    levels = np.array([-1.0, -0.5, 0.0, 0.5, 1.0], dtype=float)

    segments: List[dict] = []
    segments.append({"t": spec.pre_ticks, "u": [0.0] * 8})

    n_steps = spec.drive_ticks // spec.hold
    for k in range(n_steps):
        frac = (k + 1) / n_steps
        amp = _amp_for_step(frac, spec.amps, spec.amp_breaks)
        u = (rng.choice(levels, size=8) * amp).tolist()
        segments.append({"t": spec.hold, "u": u})

    segments.append({"t": spec.post_ticks, "u": [0.0] * 8})
    return segments


def expand_segments_u(segments: Sequence[dict]) -> np.ndarray:
    """Expands physim segments into per-tick input array of shape [T, 8]."""
    us: List[np.ndarray] = []
    for seg in segments:
        t = int(seg["t"])
        u = np.asarray(seg["u"], dtype=float)
        if u.shape != (8,):
            raise ValueError(f"expected u shape (8,), got {u.shape}")
        us.append(np.repeat(u[None, :], t, axis=0))
    return np.concatenate(us, axis=0) if us else np.zeros((0, 8), dtype=float)


def downsample_for_stride(u: np.ndarray, stride: int) -> np.ndarray:
    """
    Converts per-tick u[T,8] into per-sample u_ds[N,8] aligned to sensor series
    sampled every `stride` ticks. Assumes u is piecewise constant at <= stride.
    """
    if stride <= 0:
        raise ValueError("stride must be positive")
    n = u.shape[0] // stride
    return u[: n * stride : stride].copy()

app/scripts/compute_answers.py (2,821 chars)
#!/usr/bin/env python3
from __future__ import annotations

import argparse
import json
import math
import sys
from pathlib import Path

import numpy as np

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from physim.io import load_json
from physim.predict import model_from_json, predict_tail_mean


def parse_window_ticks(window: str) -> int:
    # formats like "last_20_ticks", "last_200_ticks"
    parts = window.split("_")
    for p in parts:
        if p.isdigit():
            return int(p)
    raise ValueError(f"unrecognized window {window!r}")


def clamp01(x: float) -> float:
    return float(max(-1.0, min(1.0, x)))


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--contracts", default="data/contracts.json")
    ap.add_argument("--models", default="data/models/first_order.json")
    ap.add_argument("--baseline", default="data/baseline/summary.json")
    ap.add_argument("--stride", type=int, default=20)
    args = ap.parse_args()

    contracts_doc = load_json(args.contracts)
    contracts = contracts_doc["contracts"]

    models = load_json(args.models)["models"]
    baseline = load_json(args.baseline)
    base_mean = baseline["mean"]
    base_sd_draws = baseline["sd_across_draws"]
    base_tail_sd = baseline["mean_tail_sd"]

    answers = []
    for c in contracts:
        cid = int(c["id"])
        segments = c["protocol"]["segments"]
        sensor = int(c["predict"]["channel"])
        stat = c["predict"]["stat"]
        window_ticks = parse_window_ticks(c["predict"]["window"])

        if stat == "mean":
            m = model_from_json(models[str(sensor)])
            y0 = float(base_mean[str(sensor)])
            pred = predict_tail_mean(m, segments=segments, stride=args.stride, y0=y0, window_ticks=window_ticks)

            # Uncertainty: initial-condition variability + measurement noise (heuristic)
            sd_draw = float(base_sd_draws.get(str(sensor), 0.02))
            sd_meas = float(base_tail_sd.get(str(sensor), 0.05)) / math.sqrt(max(1, window_ticks))
            sd = math.sqrt(sd_draw * sd_draw + sd_meas * sd_meas + 0.02 * 0.02)
            half = max(0.04, 2.5 * sd)

            answers.append({"id": cid, "mean": float(pred), "low": float(pred - half), "high": float(pred + half)})

        elif stat == "sd":
            # We don't model variance dynamics; use baseline tail SD as proxy.
            pred = float(base_tail_sd[str(sensor)])
            # Wider interval: variance can shift under drive.
            half = 0.03
            answers.append({"id": cid, "mean": pred, "low": max(0.0, pred - half), "high": pred + half})
        else:
            raise ValueError(f"unknown stat {stat!r}")

    out = {"op": "answer", "answers": answers}
    print(json.dumps(out))


if __name__ == "__main__":
    main()

app/scripts/compute_baseline.py (1,473 chars)
#!/usr/bin/env python3
from __future__ import annotations

import argparse
import glob
import json
from pathlib import Path

import numpy as np

import sys
from pathlib import Path as _Path

sys.path.insert(0, str(_Path(__file__).resolve().parents[1]))

from physim.io import load_json, save_json


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--in_glob", default="data/baseline/baseline_*.json")
    ap.add_argument("--out", default="data/baseline/summary.json")
    args = ap.parse_args()

    paths = sorted(glob.glob(args.in_glob))
    if not paths:
        raise SystemExit("no baseline files found")

    means = []
    sds = []
    for p in paths:
        rec = load_json(p)
        tm = {int(k): float(v) for k, v in rec["tail_mean"].items()}
        ts = {int(k): float(v) for k, v in rec["tail_sd"].items()}
        means.append([tm[i] for i in range(40)])
        sds.append([ts[i] for i in range(40)])

    means = np.asarray(means, dtype=float)
    sds = np.asarray(sds, dtype=float)

    out = {
        "n": int(means.shape[0]),
        "mean": {str(i): float(np.mean(means[:, i])) for i in range(40)},
        "sd_across_draws": {str(i): float(np.std(means[:, i], ddof=1)) for i in range(40)},
        "mean_tail_sd": {str(i): float(np.mean(sds[:, i])) for i in range(40)},
        "source_files": paths,
    }
    save_json(args.out, out)
    print(f"wrote {args.out} (n={out['n']})")


if __name__ == "__main__":
    main()
app/scripts/fit_models.py (2,343 chars)
#!/usr/bin/env python3
from __future__ import annotations

import argparse
import glob
import json
from pathlib import Path

import numpy as np

import sys
from pathlib import Path as _Path

sys.path.insert(0, str(_Path(__file__).resolve().parents[1]))

from physim.fit import FirstOrderModel, fit_first_order_arx
from physim.io import load_json, normalize_series_dict, save_json
from physim.segments import downsample_for_stride, expand_segments_u


def model_to_json(m: FirstOrderModel) -> dict:
    return {"a": m.a, "b": m.b.tolist(), "c": m.c, "resid_sd": m.resid_sd}


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--in_glob", default="data/experiments/*.json")
    ap.add_argument("--out", default="data/models/first_order.json")
    ap.add_argument("--ridge", type=float, default=1e-3)
    args = ap.parse_args()

    paths = sorted(glob.glob(args.in_glob))
    if not paths:
        raise SystemExit(f"no files matched {args.in_glob!r}")

    per_sensor: dict[int, list[FirstOrderModel]] = {}

    for path in paths:
        rec = load_json(path)
        stride = int(rec["stride"])
        segments = rec["segments"]
        series = normalize_series_dict(rec.get("series"))
        if not series:
            continue

        u = expand_segments_u(segments)
        u_ds = downsample_for_stride(u, stride)

        for sensor, y_list in series.items():
            y = np.asarray(y_list, dtype=float)
            t = min(len(y), u_ds.shape[0])
            if t < 5:
                continue
            m = fit_first_order_arx(y[:t], u_ds[:t], ridge=args.ridge)
            per_sensor.setdefault(sensor, []).append(m)

    fused: dict[int, dict] = {}
    for sensor, models in per_sensor.items():
        # simple average across experiments (stable if experiments similar)
        a = float(np.mean([m.a for m in models]))
        b = np.mean(np.stack([m.b for m in models], axis=0), axis=0)
        c = float(np.mean([m.c for m in models]))
        resid_sd = float(np.sqrt(np.mean([m.resid_sd**2 for m in models])))
        fused[sensor] = model_to_json(FirstOrderModel(a=a, b=b, c=c, resid_sd=resid_sd))

    out_path = Path(args.out)
    save_json(out_path, {"models": fused, "source_files": paths})
    print(f"wrote {out_path} with {len(fused)} sensors")


if __name__ == "__main__":
    main()
app/scripts/gen_segments.py (848 chars)
#!/usr/bin/env python3
from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from physim.segments import ExperimentSpec, generate_experiment_segments


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--seed", type=int, required=True)
    ap.add_argument("--pre", type=int, default=200)
    ap.add_argument("--drive", type=int, default=1000)
    ap.add_argument("--post", type=int, default=200)
    ap.add_argument("--hold", type=int, default=4)
    args = ap.parse_args()

    spec = ExperimentSpec(seed=args.seed, pre_ticks=args.pre, drive_ticks=args.drive, post_ticks=args.post, hold=args.hold)
    segs = generate_experiment_segments(spec)
    print(json.dumps(segs))


if __name__ == "__main__":
    main()
app/scripts/predict_protocol.py (1,191 chars)
#!/usr/bin/env python3
from __future__ import annotations

import argparse
import json
import sys
from pathlib import Path

import numpy as np

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from physim.io import load_json
from physim.predict import model_from_json, predict_tail_mean


def main() -> None:
    ap = argparse.ArgumentParser()
    ap.add_argument("--models", default="data/models/first_order.json")
    ap.add_argument("--baseline", default="data/baseline/summary.json")
    ap.add_argument("--sensor", type=int, required=True)
    ap.add_argument("--stride", type=int, default=20)
    ap.add_argument("--window_ticks", type=int, default=20)
    ap.add_argument("--segments_json", required=True, help="JSON array of physim segments")
    args = ap.parse_args()

    models = load_json(args.models)["models"]
    baseline = load_json(args.baseline)["mean"]
    m = model_from_json(models[str(args.sensor)])
    y0 = float(baseline[str(args.sensor)])
    segments = json.loads(args.segments_json)
    pred = predict_tail_mean(m, segments=segments, stride=args.stride, y0=y0, window_ticks=args.window_ticks)
    print(pred)


if __name__ == "__main__":
    main()

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.7740.0870.00.996
1S1-0.6780.0670.10.930
2S1-0.3970.0490.60.565
3S1-0.8590.0660.10.909
4S2-0.1740.0370.20.837
5S2+0.0500.0340.10.899
6S2-0.5230.0790.10.867
7S2+0.0490.0340.10.876
8S3-0.8620.0660.00.959
9S3+0.2260.0345.10.006
10S3+0.5580.0730.00.952
11S3+0.2160.0344.80.008
12S4-0.1720.0370.00.992
13S4-0.3820.0530.00.960
14S4+0.1980.0460.00.998
15S4-0.8780.0890.10.916
16S5+0.0490.0340.10.870
17S5+0.3580.0349.20.000
18S5+0.2090.0344.60.010
19S5+0.0500.0340.00.964
Verbatim log (42 entries)
{"budget_left": 200000, "phase": "explore"}
{"ticks_run": 200, "budget_left": 199800}
{"ticks_run": 50, "budget_left": 199750}
{"budget_left": 199550}
{"budget_left": 198150}
{"ticks_run": 500, "budget_left": 197650}
{"budget_left": 197450}
{"ticks_run": 500, "budget_left": 196950}
{"ticks_run": 300, "budget_left": 196650}
{"budget_left": 196450}
{"budget_left": 195450}
{"ticks_run": 800, "budget_left": 194650}
{"budget_left": 194450}
{"budget_left": 192250}
{"ticks_run": 400, "budget_left": 191850}
{"budget_left": 191650}
{"ticks_run": 400, "budget_left": 191250}
{"budget_left": 191050}
{"ticks_run": 400, "budget_left": 190650}
{"budget_left": 190450}
{"ticks_run": 400, "budget_left": 190050}
{"budget_left": 189850}
{"ticks_run": 400, "budget_left": 189450}
{"budget_left": 189250}
{"ticks_run": 2600, "budget_left": 186650}
{"budget_left": 186450}
{"ticks_run": 2600, "budget_left": 183850}
{"budget_left": 183650}
{"ticks_run": 2600, "budget_left": 181050}
{"budget_left": 180850}
{"ticks_run": 2600, "budget_left": 178250}
{"budget_left": 178050}
{"ticks_run": 2600, "budget_left": 175450}
{"budget_left": 175250}
{"ticks_run": 2600, "budget_left": 172650}
{"budget_left": 172450}
{"ticks_run": 2600, "budget_left": 169850}
{"budget_left": 169650}
{"ticks_run": 800, "budget_left": 168850}
{"phase": "answer"}
{"received": 20}
Submitted predictions for all 20 contracts via `physim_answer()`.

Workspace artifacts:
- Baseline draws: `data/baseline/baseline_000.json` … `data/baseline/baseline_004.json`, summarized in `data/baseline/summary.json`
- Excitation runs (all sensors, same input program): `data/experiments/exp_seed100_*.json`
- Fitted per-sensor first-order ARX models: `data/models/first_order.json`
- Contracts + 

anthropic--claude-fable-5--claude_code — C3 (2 rollouts, mean acc 0.897)

anthropic/claude-fable-5 · C3 seed 0 · tier tools · accuracy 0.90 · preparation 1.00 · theory 0.78 · budget 25%

S1=0.93 · S2=0.86 · S3=0.86 · S4=0.96 · coverage 1.00 · 338 nodes

Narrative experiment log

timeline
  1. Free run (300 ticks; 300 ticks, all inputs 0).
  2. 2× single-port probe (800 ticks; port 0 at +0.12, 300t) — ch18 +0.63→+0.45.
  3. Free run (500 ticks; 500 ticks, all inputs 0).
  4. 7× single-port probe (2,100 ticks; port 2 at +0.12, 300t).
  5. Reset to fresh initial conditions (−200 ticks).
  6. Free run (100 ticks; 100 ticks, all inputs 0).
  7. Single-port probe (400 ticks; port 0 at +0.12, 400t) — ch23 -0.14→-0.54, ch18 +0.30→+0.54.
  8. 2× free run (1,200 ticks; 600 ticks, all inputs 0).
  9. Single-port probe (1,200 ticks; port 0 at +0.12, 1200t) — ch18 +0.41→-0.57, ch23 -0.56→-0.85.
  10. ✗ free run rejected: series observation limited to <=6 channels.
  11. 2× free run (900 ticks; 800 ticks, all inputs 0) — ch34 -0.84→-0.42, ch33 -0.48→-0.13, ch16 -0.50→-0.21.
  12. 2× single-port probe (1,600 ticks; port 0 at -0.12, 900t).
  13. Reset to fresh initial conditions (−200 ticks).
  14. 2× single-port probe (400 ticks; port 0 at +0.05, 200t).
  15. Free run (300 ticks; 300 ticks, all inputs 0).
  16. Drive → release (700 ticks; drive +0.07 for 300t, release 400t).
  17. Free run (60 ticks; 60 ticks, all inputs 0).
  18. Reset to fresh initial conditions (−200 ticks).
  19. Single-port probe (150 ticks; port 0 at +0.12, 150t).
  20. Free run (350 ticks; 350 ticks, all inputs 0) — ch18 +0.60→+0.41.
  21. 2× single-port probe (2,000 ticks; port 0 at +0.12, 1000t).
  22. Free run (400 ticks; 400 ticks, all inputs 0).
  23. Reset to fresh initial conditions (−200 ticks).
  24. Single-port probe (150 ticks; port 1 at +0.12, 150t).
  25. Free run (350 ticks; 350 ticks, all inputs 0).
  26. Single-port probe (1,000 ticks; port 1 at +0.12, 1000t) — ch36 -0.65→-0.81.
  27. Free run (400 ticks; 400 ticks, all inputs 0).
  28. Reset to fresh initial conditions (−200 ticks).
  29. Single-port probe (150 ticks; port 2 at +0.12, 150t).
  30. 2× free run (700 ticks; 350 ticks, all inputs 0).
  31. Single-port probe (1,000 ticks; port 2 at +0.12, 1000t) — ch11 -0.74→-0.58.
  32. Free run (400 ticks; 400 ticks, all inputs 0).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Single-port probe (150 ticks; port 3 at +0.12, 150t).
  35. Free run (350 ticks; 350 ticks, all inputs 0).
  36. Single-port probe (1,000 ticks; port 3 at +0.12, 1000t) — ch13 +0.59→-0.39, ch11 -0.77→+0.19, ch1 +0.49→-0.23.
  37. Free run (400 ticks; 400 ticks, all inputs 0).
  38. Reset to fresh initial conditions (−200 ticks).
  39. 2× single-port probe (300 ticks; port 5 at +0.12, 150t).
  40. Free run (350 ticks; 350 ticks, all inputs 0).
  41. Single-port probe (1,000 ticks; port 5 at +0.12, 1000t) — ch18 +0.15→-0.27, ch34 -0.75→-0.57.
  42. Free run (400 ticks; 400 ticks, all inputs 0).
  43. Reset to fresh initial conditions (−200 ticks).
  44. Single-port probe (800 ticks; port 4 at +0.12, 800t).
  45. Free run (300 ticks; 300 ticks, all inputs 0).
  46. Reset to fresh initial conditions (−200 ticks).
  47. Single-port probe (800 ticks; port 6 at +0.12, 800t).
  48. Reset to fresh initial conditions (−200 ticks).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Single-port probe (800 ticks; port 7 at +0.12, 800t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Multi-port probe (600 ticks; ports [0, 3] at -0.25, 600t).
  53. Free run (300 ticks; 300 ticks, all inputs 0).
  54. Reset to fresh initial conditions (−200 ticks).
  55. 5× drive → release (3,200 ticks; drive +0.12 for 100t, release 250t) — ch13 +0.01→-0.53, ch11 -0.02→+0.23, ch25 +0.06→+0.21.
  56. Reset to fresh initial conditions (−200 ticks).
  57. Drive → release (800 ticks; drive +0.06 for 500t, release 300t).
  58. Reset to fresh initial conditions (−200 ticks).
  59. 2× drive → release (1,500 ticks; drive +0.25 for 400t, release 350t) — ch18 +0.41→-0.16, ch23 -0.55→-0.80.
  60. Free run (2,500 ticks; 2500 ticks, all inputs 0) — ch1 +0.49→+0.29, ch34 -0.64→-0.44, ch16 -0.40→-0.23.
  61. Reset to fresh initial conditions (−200 ticks).
  62. Reset to fresh initial conditions (−200 ticks).
  63. Free run (1,200 ticks; 1200 ticks, all inputs 0).
  64. Reset to fresh initial conditions (−200 ticks).
  65. 4× free run (4,000 ticks; 600 ticks, all inputs 0).
  66. Reset to fresh initial conditions (−200 ticks).
  67. Single-port probe (1,200 ticks; port 1 at -0.12, 1200t).
  68. Reset to fresh initial conditions (−200 ticks).
  69. Reset to fresh initial conditions (−200 ticks).
  70. Drive → release (1,100 ticks; drive -0.12 for 800t, release 300t).
  71. Reset to fresh initial conditions (−200 ticks).
  72. Drive → release (1,300 ticks; drive +0.10 for 800t, release 500t).
  73. Reset to fresh initial conditions (−200 ticks).
  74. Reset to fresh initial conditions (−200 ticks).
  75. 3× drive → release (1,350 ticks; drive -0.05 for 200t, release 300t) — ch18 +0.28→-0.66, ch23 -0.15→-0.83.
  76. Reset to fresh initial conditions (−200 ticks).
  77. Drive → release (330 ticks; drive -0.12 for 80t, release 250t).
  78. Reset to fresh initial conditions (−200 ticks).
  79. Drive → release (650 ticks; drive -0.07 for 400t, release 250t).
  80. Reset to fresh initial conditions (−200 ticks).
  81. Reset to fresh initial conditions (−200 ticks).
  82. Drive → release (330 ticks; drive -0.12 for 80t, release 250t).
  83. Free run (60 ticks; 60 ticks, all inputs 0).
  84. Reset to fresh initial conditions (−200 ticks).
  85. Reset to fresh initial conditions (−200 ticks).
  86. Drive → release (1,550 ticks; drive +0.11 for 950t, release 600t).
  87. Reset to fresh initial conditions (−200 ticks).
  88. Single-port probe (500 ticks; port 0 at +0.09, 500t).
  89. Drive → release (1,050 ticks; drive +0.12 for 250t, release 800t) — ch1 +0.58→+0.22, ch11 -0.73→-0.41, ch25 -0.43→-0.27.
  90. Ended exploration → received 16 prediction contracts + 3 preparation contracts.
  91. Submitted 16 contract answers.
  92. Submitted preparation policy for contract 100 ("Flip port-3 branch: strong negative drive latches ch13 to ~-0.75,").
  93. Submitted preparation policy for contract 101 ("Flip port-3 branch: ch11 latches to ~+0.27 (plus slow upward aging drift),").
  94. Submitted preparation policy for contract 102 ("Flip port-0 branch: ch18 latches to ~-0.65, inside band [-0.952, -0.366].").
  95. Submitted an executable theory (4,084 chars).

Agent-written files (its instruments & theories)

app/physim/notes.md (3,947 chars)
# Physim world notes

Interface: 8 inputs, 40 sensors, obs window 20 ticks, budget 200000, reset costs 200.
Noise: all channels white-ish, sd ~0.05 (tail_sd 0.03-0.07 everywhere so far).

## Baseline (draw #1, after 300 ticks zero)
ch: 0:-0.54 1:0.576 2:0.036 3:-0.24 4:-0.28 5:-0.129 6:-0.607 7:-0.705 8:-0.627 9:0.096
10:-1.008 11:-0.742 12:-0.618 13:0.405 14:-0.072 15:-0.36 16:-0.476 17:-0.213 18:0.295 19:-0.446
20:-0.595 21:-0.669 22:0.349 23:-0.146 24:-0.393 25:-0.441 26:0.458 27:0.90 28:0.39 29:0.588
30:-0.482 31:0.289 32:-0.544 33:-0.452 34:-0.783 35:-0.501 36:-0.646 37:0.308 38:0.624 39:-0.435

## Port couplings (step +1, 300 ticks, changes > ~0.05)
- Port0: ch18 +0.34, ch23 -0.23
- Port1: ch11 +0.11, ch31 +0.12, ch33 +0.12, ch34 +0.11, ch36 -0.16
- Port2: ch16 +0.13, ch28 -0.13, ch1 -0.09, ch26 -0.09, ch14 +0.05?
- Port3: ch1 -0.36, ch11 +0.38, ch25 +0.28, ch13 -0.13
- Port4: ch13 -0.08 (weak)
- Port5: ch18 -0.26, ch23 +0.10  (same latent as port0, opposite sign)
- Port6: ~nothing clear
- Port7: ~nothing clear (maybe ch13 -0.04, ch11 +0.05)

## Key dynamics findings
1. PERSISTENCE: effects do NOT relax to baseline. After port0 step (ch18 0.295->0.63 during),
   500+ ticks of zeros leave ch18 ~0.47, ch23 ~-0.40. Partial relaxation then hold.
2. SLOW DRIFT: after port3 step, its channels kept drifting the same direction for 1200+ ticks
   at zero/other inputs: ch11 -0.195->-0.089, ch13 0.336->0.134, ch1 0.068->0.012.
   (each arrow spans ~300 ticks steps). Could be slow integrator/adaptation latent.
3. Latents hypothesis: sensors = linear readout of a few latent states + offset + noise(0.05).
   Latent A: driven by port0(+), port5(-); read by ch18(+), ch23(-).
   Latent B: port3(+), port1(+ weaker); read by ch11(+), ch1(-), ch25(+), ch13(-)... check overlap w/ port1 set.

## Deep-drive findings (draw #2)
- Port0 +1 held 1600 ticks: ch18 fast +0.2 (tau~20), then slow creep +0.1 (tau~150?), then LONG decline
  through zero to -0.57 (tau~500-800). ch23: fast +0.1, slow to -0.845 SATURATES (~tau 200-300).
- Release: NO decay of slow parts over 900+ ticks. ch18 stays -0.57, ch23 -0.83.
- Long port0 drive displaced MANY channels (all port-groups): ch1 -0.35, ch11 +0.36, ch14 +0.23,
  ch16 +0.29, ch26 -0.19, ch28 -0.14, ch31 +0.21, ch33 +0.35, ch34 +0.42, ch36 -0.17, ch7 +0.15, ch4 -0.10.
- IRREVERSIBLE: port0=-1 x900 ticks did NOT undo anything (ch18 only -0.05 fast). port5=+1 x700 also
  did not restore ch23/ch18 (ch18 fast only -0.08, vs -0.26 near baseline -> compressive nonlinearity
  or fast latent rail). One-way ratchet / branch memory.
- Fresh-draw ICs consistent: draw#1 vs draw#2 baselines match within ~0.05.
- Responsive channels so far: 1,4,7,11,13,14,16,18,23,25,26,28,31,33,34,36 (+weak: 2?,22?). Others static.

## FINAL MODEL (fit6.py / model.pkl, validated mean-abs-err ~0.02-0.03)
- Sensors = BASE + linear readout of latents + white noise sd~0.05. 17 responsive channels.
- Fast reversible latents F_p per port, tau ~52.
- Aging A: autonomous 0->1 drift (Weibull lam~2451 k~1.23) from reset, input-independent,
  suppressed ~80% while ports 0/3 driven negative. Readout = the shared "W pattern".
- Ratchet latches (permanent): Weibull fns of integrated |F_p|^2.33 for ports 0 (P0a,P0b),
  3 (P3a,P3b,P3c), 5 (P5a). Positive drive charges gradually; port5 negative at 0.44x rate.
- AVALANCHE FLIPS: u<-0.50 on port 0 or 3 accumulates z=(|u|-0.5)*t; z>27 flips a bistable
  branch (fixed pattern: ch18->-0.65/ch23->-0.85 for port0; ch1->-0.28,ch11->+0.27,
  ch13->-0.75,ch25->+0.22 for port3). Permanent, ~60 ticks at u=-1.
- Contracts answered (16 predictions, 3 preps via flips, theory submitted).

## TODO
- reset, sample fresh ICs (several)
- step response series: time constant, latch fraction, bistable vs integrator
- amplitude sweep (nonlinearity, thresholds, sign asymmetry)
- long holds (duration dependence), drift characterization
- check sd/oscillation under strong drive
app/.vf-claude/a40435a192e546baa2f706c6b98375b0/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T20:29:23.018Z",
  "machineID": "027d375c3fb8dfce99afcae8ebb6cd3cfb316f56f717816e8def592441c0196f",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "6420b890878693c6ef1a2cac1081c559b5d30ad238bdd96061bfc134c8a1bb72"
}
app/physim/data.py (12,293 chars)
# All physim observations. Each draw: list of (input_vec8, duration, tail_obs or None)
# tail_obs = dict channel -> mean of final 20 ticks of that segment-run.
# Times are ticks since reset (draw start). Noise sd ~0.05 per tick, SEM(tail20) ~0.011.

BASE = {0:-0.552, 1:0.615, 2:0.032, 3:-0.213, 4:-0.301, 5:-0.134, 6:-0.615, 7:-0.703,
        8:-0.628, 9:0.090, 10:-0.996, 11:-0.775, 12:-0.622, 13:0.384, 14:-0.070,
        15:-0.366, 16:-0.487, 17:-0.220, 18:0.298, 19:-0.434, 20:-0.599, 21:-0.649,
        22:0.331, 23:-0.142, 24:-0.383, 25:-0.428, 26:0.466, 27:0.889, 28:0.410,
        29:0.586, 30:-0.487, 31:0.281, 32:-0.548, 33:-0.470, 34:-0.828, 35:-0.510,
        36:-0.628, 37:0.305, 38:0.625, 39:-0.433}
# (avg of fresh-draw baselines draws 1,2; consistent within ~0.05 across draws)

DRAWS = {
# draw1: initial port scan (300t steps at +1, some 200t gaps)
"d1": [
 ([0]*8, 300, {18:0.295, 23:-0.146, 1:0.576, 11:-0.742, 13:0.405, 16:-0.476, 25:-0.441,
               26:0.458, 28:0.390, 31:0.289, 33:-0.452, 34:-0.783, 36:-0.646, 14:-0.072, 4:-0.280, 7:-0.705}),
 ([1,0,0,0,0,0,0,0], 300, {18:0.631, 23:-0.374, 14:-0.021, 1:0.564, 11:-0.718, 33:-0.405, 34:-0.740, 16:-0.435, 31:0.338}),
 ([0]*8, 200, None),
 ([0,1,0,0,0,0,0,0], 300, {11:-0.630, 31:0.413, 33:-0.332, 34:-0.675, 36:-0.804, 18:0.455, 23:-0.439, 1:0.520, 16:-0.413, 26:0.472, 28:0.443}),
 ([0]*8, 500, {11:-0.608, 18:0.474, 23:-0.402, 33:-0.284, 34:-0.636, 36:-0.723}),
 ([0,0,1,0,0,0,0,0], 300, {16:-0.286, 28:0.316, 1:0.433, 26:0.380, 14:0.047, 31:0.468, 18:0.477, 23:-0.418, 33:-0.252, 34:-0.662, 11:-0.575, 13:0.464}),
 ([0,0,0,1,0,0,0,0], 300, {1:0.068, 11:-0.195, 25:-0.142, 13:0.336, 16:-0.365, 34:-0.608, 33:-0.251, 18:0.463, 23:-0.416, 31:0.458}),
 ([0,0,0,0,1,0,0,0], 300, {13:0.258, 1:0.075, 11:-0.189, 25:-0.124, 33:-0.215, 34:-0.606, 18:0.461, 23:-0.413, 31:0.468, 16:-0.377}),
 ([0,0,0,0,0,1,0,0], 300, {18:0.203, 23:-0.309, 13:0.204, 1:0.050, 11:-0.145, 33:-0.231, 34:-0.582, 31:0.477, 16:-0.374, 25:-0.099}),
 ([0,0,0,0,0,0,1,0], 300, {18:0.192, 23:-0.376, 13:0.177, 1:0.039, 11:-0.135, 33:-0.211, 34:-0.605, 31:0.493, 16:-0.361, 4:-0.261}),
 ([0,0,0,0,0,0,0,1], 300, {18:0.182, 23:-0.377, 13:0.134, 1:0.012, 11:-0.089, 33:-0.192, 34:-0.596, 31:0.495, 16:-0.388, 25:-0.103}),
],
# draw2: baseline 100; port0 +1 x400; 0 x600; +1 x1200; 0 x800; 0 x100; -1 x900; port5 +1 x700
"d2": [
 ([0]*8, 100, {18:0.300, 23:-0.138, 1:0.639, 11:-0.769, 13:0.364, 16:-0.497, 33:-0.479, 34:-0.838, 31:0.280, 36:-0.623, 26:0.472, 28:0.416, 25:-0.421, 14:-0.080, 4:-0.306, 7:-0.699}),
 ([1,0,0,0,0,0,0,0], 400, {18:0.543, 23:-0.539}),
 ([0]*8, 600, {18:0.410, 23:-0.557}),
 ([1,0,0,0,0,0,0,0], 1200, {18:-0.570, 23:-0.846}),
 ([0]*8, 800, {18:-0.572, 23:-0.832, 1:0.293, 4:-0.412, 7:-0.546, 11:-0.405, 13:0.368, 14:0.154, 16:-0.211, 25:-0.365, 26:0.286, 28:0.277, 31:0.490, 33:-0.131, 34:-0.420, 36:-0.791}),
 ([0]*8, 100, {1:0.277, 11:-0.409, 18:-0.562, 23:-0.832}),
 ([-1,0,0,0,0,0,0,0], 900, {1:0.281, 11:-0.370, 16:-0.217, 18:-0.622, 23:-0.840, 34:-0.396}),
 ([0,0,0,0,0,1,0,0], 700, {1:0.264, 11:-0.348, 16:-0.201, 18:-0.649, 23:-0.827, 34:-0.361}),
],
# draw3: 0.4x200; 0x300; 0.6x300; 0x400; 0x60 (all-snapshot at end)
"d3": [
 ([0.4,0,0,0,0,0,0,0], 200, {18:0.392, 23:-0.138}),
 ([0]*8, 300, {18:0.332, 23:-0.157}),
 ([0.6,0,0,0,0,0,0,0], 300, None),
 ([0]*8, 400, {18:0.470, 23:-0.305}),
 ([0]*8, 60, {18:0.427, 23:-0.303, 1:0.510, 11:-0.641, 13:0.431, 14:0.002, 16:-0.401, 25:-0.445, 26:0.397, 28:0.362, 31:0.417, 33:-0.277, 34:-0.664, 36:-0.741}),
],
# draw4: port0 battery: +1x150; 0x350; +1x1000; 0x400
"d4": [
 ([1,0,0,0,0,0,0,0], 150, {18:0.596, 23:-0.184, 1:0.622, 11:-0.798, 16:-0.486, 33:-0.469, 34:-0.824, 31:0.285, 13:0.398, 25:-0.419, 26:0.478, 28:0.431, 36:-0.614}),
 ([0]*8, 350, {18:0.406, 23:-0.268, 1:0.571, 11:-0.736, 16:-0.428, 33:-0.396, 34:-0.754, 31:0.343, 36:-0.677, 26:0.444, 28:0.387, 13:0.396, 25:-0.442}),
 ([1,0,0,0,0,0,0,0], 1000, {18:-0.467, 23:-0.856, 1:0.442, 11:-0.568, 16:-0.384, 33:-0.271, 34:-0.622, 31:0.408, 4:-0.404, 13:0.455, 14:0.026, 25:-0.414, 26:0.381, 28:0.340, 36:-0.722}),
 ([0]*8, 400, {18:-0.437, 23:-0.817, 1:0.406, 11:-0.518, 16:-0.369, 33:-0.258, 34:-0.591, 31:0.431, 4:-0.402, 13:0.406, 14:0.052, 25:-0.408, 26:0.360, 28:0.322, 36:-0.773, 7:-0.693}),
],
# draw5: port1 battery
"d5": [
 ([0,1,0,0,0,0,0,0], 150, {26:0.532, 28:0.495, 36:-0.698, 34:-0.846, 31:0.264, 33:-0.485, 11:-0.779, 1:0.621, 18:0.305, 23:-0.142, 16:-0.480, 13:0.378, 25:-0.439}),
 ([0]*8, 350, {11:-0.712, 31:0.316, 33:-0.406, 34:-0.772, 36:-0.655, 26:0.450, 28:0.399, 1:0.569, 18:0.272, 23:-0.134, 16:-0.471, 13:0.432, 25:-0.452}),
 ([0,1,0,0,0,0,0,0], 1000, {11:-0.584, 31:0.439, 33:-0.284, 34:-0.669, 36:-0.807, 26:0.443, 28:0.400, 1:0.447, 18:0.245, 23:-0.125, 16:-0.387, 13:0.434, 14:0.015, 25:-0.412}),
 ([0]*8, 400, {11:-0.529, 31:0.464, 33:-0.242, 34:-0.625, 36:-0.743, 26:0.359, 28:0.317, 1:0.413, 18:0.262, 23:-0.125, 16:-0.388, 13:0.403, 14:0.035, 25:-0.425}),
],
# draw6: port2 battery
"d6": [
 ([0,0,1,0,0,0,0,0], 150, {16:-0.412, 7:-0.782, 1:0.624, 28:0.411, 26:0.465, 34:-0.883, 33:-0.461, 11:-0.798, 18:0.308, 23:-0.142, 13:0.361, 31:0.278}),
 ([0]*8, 350, {16:-0.439, 1:0.578, 11:-0.741, 33:-0.390, 34:-0.791, 31:0.342, 18:0.268, 23:-0.132, 26:0.448, 28:0.399, 13:0.409, 36:-0.684, 7:-0.690}),
 ([0,0,1,0,0,0,0,0], 1000, {16:-0.324, 7:-0.773, 1:0.454, 11:-0.580, 33:-0.271, 34:-0.692, 31:0.422, 18:0.259, 23:-0.119, 26:0.375, 28:0.336, 13:0.452, 14:0.016, 36:-0.750}),
 ([0]*8, 400, {16:-0.382, 7:-0.689, 1:0.434, 11:-0.561, 33:-0.259, 34:-0.615, 31:0.443, 18:0.272, 23:-0.134, 26:0.368, 28:0.322, 13:0.467, 14:0.036, 36:-0.762}),
],
# draw7: port3 battery
"d7": [
 ([0,0,0,1,0,0,0,0], 150, {13:0.737, 11:-0.843, 1:0.541, 25:-0.415, 16:-0.467, 33:-0.454, 34:-0.877, 18:0.282, 23:-0.132, 31:0.267, 26:0.470, 28:0.419, 36:-0.614}),
 ([0]*8, 350, {13:0.588, 1:0.488, 11:-0.767, 25:-0.410, 31:0.327, 33:-0.395, 34:-0.826, 16:-0.469, 18:0.298, 23:-0.139, 26:0.458, 28:0.418, 36:-0.667}),
 ([0,0,0,1,0,0,0,0], 1000, {1:-0.230, 11:0.189, 13:-0.391, 25:0.169, 12:-0.519, 16:-0.476, 33:-0.278, 34:-0.845, 31:0.465, 18:0.261, 23:-0.118, 26:0.362, 28:0.308, 36:-0.715, 14:-0.040}),
 ([0]*8, 400, {1:-0.223, 11:0.166, 13:-0.377, 25:0.167, 12:-0.529, 16:-0.493, 33:-0.257, 34:-0.885, 31:0.466, 18:0.262, 23:-0.123, 26:0.357, 28:0.319, 36:-0.748, 14:-0.043}),
],
# draw8: port5 battery
"d8": [
 ([0,0,0,0,0,1,0,0], 150, {18:0.174, 23:-0.060, 11:-0.813, 33:-0.449, 34:-0.825, 31:0.308, 1:0.630, 16:-0.457, 26:0.470, 28:0.417, 13:0.383, 36:-0.632}),
 ([0]*8, 350, {18:0.154, 23:-0.116, 11:-0.733, 33:-0.407, 34:-0.746, 31:0.342, 1:0.573, 16:-0.444, 26:0.447, 28:0.407, 13:0.424, 36:-0.664}),
 ([0,0,0,0,0,1,0,0], 1000, {18:-0.274, 23:-0.185, 11:-0.613, 33:-0.282, 34:-0.568, 31:0.468, 1:0.487, 16:-0.440, 26:0.386, 28:0.353, 13:0.420, 14:-0.001, 36:-0.725}),
 ([0]*8, 400, {18:-0.267, 23:-0.185, 11:-0.576, 33:-0.269, 34:-0.503, 31:0.476, 1:0.444, 16:-0.446, 26:0.353, 28:0.314, 13:0.412, 36:-0.745}),
],
# draw9: port4 800 + release 300
"d9": [
 ([0,0,0,0,1,0,0,0], 800, {11:-0.657, 16:-0.417, 26:0.411, 28:0.333, 31:0.389, 33:-0.381, 34:-0.701, 1:0.533, 13:0.442, 18:0.260, 23:-0.116, 36:-0.675, 25:-0.437}),
 ([0]*8, 300, {11:-0.624, 16:-0.411, 26:0.413, 28:0.341, 31:0.413, 33:-0.340, 34:-0.650, 1:0.475, 13:0.452, 18:0.276, 23:-0.134, 36:-0.693, 25:-0.421}),
],
# draw10: port6 800
"d10": [
 ([0,0,0,0,0,0,1,0], 800, {11:-0.677, 16:-0.447, 26:0.435, 28:0.388, 31:0.396, 33:-0.365, 34:-0.711, 1:0.536, 13:0.462, 18:0.289, 23:-0.123, 36:-0.686, 25:-0.426}),
],
# draw11: port7 800
"d11": [
 ([0,0,0,0,0,0,0,1], 800, {11:-0.698, 16:-0.410, 26:0.429, 28:0.372, 31:0.349, 33:-0.358, 34:-0.706, 1:0.540, 13:0.442, 18:0.301, 23:-0.154, 36:-0.710, 25:-0.439}),
],
# draw12: port0=-1 AND port3=-1 x600; release 300  (aging suppressed?)
"d12": [
 ([-1,0,0,-1,0,0,0,0], 600, {18:-0.649, 23:-0.846, 1:-0.263, 11:0.262, 13:-0.741, 25:0.222, 4:-0.427, 16:-0.433, 26:0.506, 28:0.414, 31:0.244, 33:-0.483, 34:-0.804, 36:-0.622, 14:-0.035}),
 ([0]*8, 300, {18:-0.645, 23:-0.849, 1:-0.263, 11:0.276, 13:-0.751, 25:0.211, 4:-0.381, 16:-0.428, 26:0.488, 28:0.428, 31:0.245, 33:-0.486, 34:-0.778, 36:-0.613, 14:-0.029}),
],
# draw13: port3 duration ladder (cumulative 100,300,700,1500 with 250-300 releases between)
"d13": [
 ([0,0,0,1,0,0,0,0], 100, None),
 ([0]*8, 250, {13:0.542, 1:0.523, 11:-0.755, 25:-0.394, 34:-0.838, 33:-0.424, 31:0.314, 16:-0.470, 18:0.319, 23:-0.134, 26:0.455, 28:0.403}),
 ([0,0,0,1,0,0,0,0], 200, None),
 ([0]*8, 250, {13:0.615, 1:0.294, 11:-0.555, 25:-0.257, 34:-0.841, 33:-0.361, 31:0.386, 16:-0.488, 18:0.296, 23:-0.127, 26:0.413, 28:0.374}),
 ([0,0,0,1,0,0,0,0], 400, None),
 ([0]*8, 250, {13:0.011, 1:-0.102, 11:-0.019, 25:0.059, 34:-0.868, 33:-0.263, 31:0.461, 16:-0.490, 18:0.270, 23:-0.126, 26:0.375, 28:0.325, 12:-0.556}),
 ([0,0,0,1,0,0,0,0], 800, None),
 ([0]*8, 300, {13:-0.528, 1:-0.254, 11:0.226, 25:0.215, 34:-0.919, 33:-0.202, 31:0.513, 16:-0.505, 18:0.285, 23:-0.112, 26:0.322, 28:0.282, 12:-0.445, 14:-0.037}),
],
# draw14: port0 0.5x500; release 300
"d14": [
 ([0.5,0,0,0,0,0,0,0], 500, None),
 ([0]*8, 300, {18:0.415, 23:-0.312, 33:-0.376, 34:-0.718, 31:0.361, 11:-0.701, 16:-0.416, 1:0.553, 13:0.466, 26:0.436, 28:0.382}),
],
# draw15: ports0+1 together x400; rel 350; port0 x400; rel 350; idle 2500
"d15": [
 ([1,1,0,0,0,0,0,0], 400, None),
 ([0]*8, 350, {23:-0.551, 18:0.415, 33:-0.372, 34:-0.712, 31:0.412, 11:-0.683, 16:-0.427, 1:0.543, 26:0.420, 28:0.370, 13:0.396, 36:-0.699}),
 ([1,0,0,0,0,0,0,0], 400, None),
 ([0]*8, 350, {23:-0.797, 18:-0.162, 33:-0.277, 34:-0.636, 31:0.473, 11:-0.568, 16:-0.396, 1:0.489, 4:-0.400, 26:0.380, 28:0.342, 13:0.435, 36:-0.737}),
 ([0]*8, 2500, {23:-0.802, 18:-0.203, 33:-0.129, 34:-0.444, 31:0.536, 11:-0.423, 16:-0.228, 1:0.292, 4:-0.387, 26:0.303, 28:0.244, 13:0.341, 14:0.164, 25:-0.372, 36:-0.755, 7:-0.579}),
],
# draw16: pure idle 1200 (control)
"d16": [
 ([0]*8, 1200, {33:-0.327, 34:-0.663, 31:0.425, 11:-0.648, 16:-0.421, 1:0.515, 26:0.408, 28:0.344, 18:0.252, 23:-0.133, 13:0.433, 14:-0.009, 25:-0.465, 36:-0.696}),
],
# draw17: pure idle checkpoints 600/1200/2400/4000
"d17": [
 ([0]*8, 600, {33:-0.396, 34:-0.745, 31:0.347, 11:-0.725, 16:-0.424, 1:0.563}),
 ([0]*8, 600, {33:-0.268, 34:-0.617, 31:0.441, 11:-0.630, 16:-0.394, 1:0.508}),
 ([0]*8, 1200, {33:-0.224, 34:-0.559, 31:0.459, 11:-0.444, 16:-0.341, 1:0.373}),
 ([0]*8, 1600, {33:-0.153, 34:-0.430, 31:0.527, 11:-0.364, 16:-0.265, 1:0.283, 26:0.284, 28:0.226, 13:0.331, 14:0.129, 25:-0.360, 18:0.243, 23:-0.142, 7:-0.593, 36:-0.745, 12:-0.619}),
],
# draw18: port1=-1 x1200
"d18": [
 ([0,-1,0,0,0,0,0,0], 1200, {26:0.325, 28:0.255, 36:-0.609, 33:-0.305, 34:-0.630, 31:0.431, 11:-0.642, 16:-0.409, 1:0.492, 18:0.255, 23:-0.118, 13:0.435, 25:-0.446, 14:0.032}),
],
# draw19: port5=-1 x800; rel 300
"d19": [
 ([0,0,0,0,0,-1,0,0], 800, None),
 ([0]*8, 300, {18:0.069, 23:-0.100, 33:-0.311, 34:-0.709, 31:0.422, 11:-0.665, 16:-0.369, 1:0.488, 26:0.403, 28:0.342, 13:0.468, 36:-0.699, 25:-0.437}),
],
}

# validation & negative-threshold draws
DRAWS["v1"] = [
 ([0,0,0,0.8,0,0,0,0],300,None),([0]*8,200,None),([-0.7,0,0,0,0,0,0,0],300,None),
 ([0]*8,500,{1:0.3484,4:-0.3975,7:-0.7299,11:-0.5804,12:-0.617,13:0.598,14:-0.0191,
  16:-0.4482,18:-0.6382,23:-0.8446,25:-0.3446,26:0.3949,28:0.3072,31:0.4697,33:-0.2937,34:-0.7183,36:-0.7288}),
]
DRAWS["n1"] = [
 ([-0.4,0,0,0,0,0,0,0],200,None),([0]*8,300,{18:0.2726,23:-0.1166,1:0.5704,11:-0.7458,13:0.407,25:-0.4248}),
 ([-0.7,0,0,0,0,0,0,0],100,None),([0]*8,300,{18:0.2758,23:-0.1461,1:0.5327,11:-0.6892,13:0.4667,25:-0.4362}),
 ([-0.7,0,0,0,0,0,0,0],150,None),([0]*8,300,{18:-0.6615,23:-0.8349,1:0.4985,11:-0.6244,13:0.4309,25:-0.4447}),
]
DRAWS["n2"] = [
 ([-1,0,0,0,0,0,0,0],80,None),([0]*8,250,{18:-0.6655,23:-0.8573,1:0.5812,11:-0.773,13:0.4316,25:-0.4494}),
]
DRAWS["n3"] = [
 ([-0.55,0,0,0,0,0,0,0],400,None),([0]*8,250,{18:0.2511,23:-0.1237,1:0.5716,11:-0.7489,13:0.4416,25:-0.441}),
]
DRAWS["n4"] = [
 ([0,0,0,-1,0,0,0,0],80,None),([0]*8,250,{1:-0.2749,11:0.2619,13:-0.7462,25:0.2247,18:0.2729,23:-0.1472}),
 ([0]*8,60,{1:-0.2787,11:0.2657,13:-0.7495,25:0.237,4:-0.2966,12:-0.6203,14:-0.0623,16:-0.4746,
  18:0.29,23:-0.1345,26:0.4739,28:0.4037,31:0.2794,33:-0.5052,34:-0.8171,36:-0.5785}),
]
app/physim/fit.py (3,234 chars)
import numpy as np
from scipy.optimize import minimize
import data

CHANNELS = [1,4,7,11,12,13,14,16,18,23,25,26,28,31,33,34,36]
BASE = data.BASE

# Latents: A (aging), P0a,P0b, P3a,P3b, P5a,P5b, F0,F1,F2,F3,F4,F5,F6,F7
# dynamics params (theta):
#  tau_f, e (charge exponent), ka0, kb0, ka3, kb3, ka5, kb5, lamA, kA(weibull), agesupp(neg 0/3 factor)
LATENT_NAMES = ["A","P0a","P0b","P3a","P3b","P5a","P5b","F0","F1","F2","F3","F5"]

def simulate(segs, theta, dt=5):
    tau_f, e, ka0, kb0, ka3, kb3, ka5, kb5, lamA, kA = theta
    F = np.zeros(8)
    P0a=P0b=P3a=P3b=P5a=P5b=0.0
    t = 0.0
    out = []
    for u, dur, obs in segs:
        u = np.asarray(u, float)
        n = int(dur // dt)
        for i in range(n):
            F += (u - F) * (dt / tau_f)
            a0 = abs(F[0])**e; a3 = abs(F[3])**e; a5 = abs(F[5])**e
            P0a += ka0 * a0 * (1-P0a) * dt
            P0b += kb0 * P0a * (1-P0b) * dt
            P3a += ka3 * a3 * (1-P3a) * dt
            P3b += kb3 * P3a * (1-P3b) * dt
            P5a += ka5 * a5 * (1-P5a) * dt
            P5b += kb5 * P5a * (1-P5b) * dt
            t += dt
        A = 1 - np.exp(-(t/lamA)**kA)
        lat = np.array([A,P0a,P0b,P3a,P3b,P5a,P5b,F[0],F[1],F[2],F[3],F[5]])
        out.append((lat, obs))
    return out

def collect(theta):
    X = {}; Y = {}
    for ch in CHANNELS: X[ch]=[]; Y[ch]=[]
    for name, segs in data.DRAWS.items():
        for lat, obs in simulate(segs, theta):
            if obs is None: continue
            for ch, val in obs.items():
                if ch in X:
                    X[ch].append(lat); Y[ch].append(val - BASE[ch])
    return X, Y

def solve_readouts(theta, ridge=1e-3):
    X, Y = collect(theta)
    R = {}; loss = 0.0; npts=0
    for ch in CHANNELS:
        A_ = np.array(X[ch]); y = np.array(Y[ch])
        if len(y) < 6: continue
        M = A_.T @ A_ + ridge*np.eye(A_.shape[1])
        r = np.linalg.solve(M, A_.T @ y)
        R[ch] = r
        res = A_ @ r - y
        loss += float(res @ res); npts += len(y)
    return R, loss, npts

def objective(logtheta):
    theta = np.exp(logtheta)
    try:
        _, loss, npts = solve_readouts(theta)
        return loss
    except Exception:
        return 1e9

theta0 = np.array([20, 2.7, 0.004, 0.004, 0.005, 0.004, 0.002, 0.002, 2400, 1.15])
res = minimize(objective, np.log(theta0), method="Nelder-Mead",
               options={"maxiter": 2000, "xatol":1e-3, "fatol":1e-4})
theta = np.exp(res.x)
R, loss, npts = solve_readouts(theta)
print("theta:", dict(zip(["tau_f","e","ka0","kb0","ka3","kb3","ka5","kb5","lamA","kA"], np.round(theta,5))))
print("rms residual:", np.sqrt(loss/npts), "npts:", npts)
print("\nreadouts (channel: " + ", ".join(LATENT_NAMES) + ")")
for ch in CHANNELS:
    if ch in R:
        print(f"ch{ch:2d}:", np.round(R[ch],3))

# per-channel rms
X, Y = collect(theta)
print("\nper-channel rms:")
for ch in CHANNELS:
    if ch in R:
        A_ = np.array(X[ch]); y = np.array(Y[ch])
        r = A_ @ R[ch] - y
        print(f"ch{ch:2d}: rms={np.sqrt(np.mean(r**2)):.035f}"[:24], f" n={len(y)} max={np.max(np.abs(r)):.3f}")

np.save("/app/physim/theta.npy", theta)
np.save("/app/physim/readouts.npy", np.array([R.get(ch, np.zeros(12)) for ch in CHANNELS]))
app/physim/fit2.py (4,101 chars)
import numpy as np
from scipy.optimize import minimize
import data

CHANNELS = [1,4,7,11,12,13,14,16,18,23,25,26,28,31,33,34,36]
BASE = data.BASE

# latents vector: [A, P0a, P0b, P3a, P3b, P5a, gF0, gF1, gF2, gF3, gF5]
# gFp = gated fast latent (gain shrinks as corresponding P_b charges)
LN = ["A","P0a","P0b","P3a","P3b","P5a","gF0","gF1","gF2","gF3","gF5"]
MASK = {
 1:  ["A","P3a","P3b","gF2","gF3"],
 4:  ["A","P0b","gF0"],
 7:  ["A","gF2"],
 11: ["A","P3a","P3b","gF1","gF3"],
 12: ["A","P3b"],
 13: ["A","P3a","P3b","gF3"],
 14: ["A"],
 16: ["A","P3a","P3b","gF2"],
 18: ["A","P0a","P0b","P5a","gF0","gF5"],
 23: ["A","P0a","P0b","P5a","gF0","gF5"],
 25: ["A","P3a","P3b","gF3"],
 26: ["A","gF1"],
 28: ["A","gF1"],
 31: ["A","gF1"],
 33: ["A","gF1"],
 34: ["A","P3a","P3b","gF1"],
 36: ["A","gF1"],
}

def simulate(segs, theta, dt=5):
    tau_f, e, ka0, kb0, ka3, kb3, ka5, lamA, kA, supp = theta
    F = np.zeros(8)
    P0a=P0b=P3a=P3b=P5a=0.0
    t = 0.0; Aeff = 0.0   # integrate aging with suppression
    out = []
    for u, dur, obs in segs:
        u = np.asarray(u, float)
        n = int(round(dur / dt))
        for i in range(n):
            F += (u - F) * (dt / tau_f)
            a0 = abs(F[0])**e; a3 = abs(F[3])**e; a5 = abs(F[5])**e
            P0a += ka0 * a0 * (1-P0a) * dt
            P0b += kb0 * P0a * (1-P0b) * dt
            P3a += ka3 * a3 * (1-P3a) * dt
            P3b += kb3 * P3a * (1-P3b) * dt
            P5a += ka5 * a5 * (1-P5a) * dt
            # aging: Weibull hazard in effective time, suppressed by negative drive on ports0/3
            sfac = 1.0 - supp*min(1.0, max(-F[0], -F[3], 0.0))
            t += dt
            haz = (kA/lamA)*max(t/lamA,1e-9)**(kA-1)
            Aeff += sfac * haz * (1-Aeff) * dt
        g0 = (1-P0b); g3 = (1-P3b); g5 = (1-P5a)
        lat = np.array([Aeff,P0a,P0b,P3a,P3b,P5a,F[0]*g0,F[1],F[2],F[3]*g3,F[5]*g5])
        out.append((lat, obs))
    return out

def collect(theta):
    X = {}; Y = {}
    for ch in CHANNELS: X[ch]=[]; Y[ch]=[]
    for name, segs in data.DRAWS.items():
        for lat, obs in simulate(segs, theta):
            if obs is None: continue
            for ch, val in obs.items():
                if ch in X:
                    X[ch].append(lat); Y[ch].append(val - BASE[ch])
    return X, Y

IDX = {n:i for i,n in enumerate(LN)}
def solve_readouts(theta, ridge=3e-3):
    X, Y = collect(theta)
    R = {}; loss = 0.0; npts=0
    for ch in CHANNELS:
        A_ = np.array(X[ch]); y = np.array(Y[ch])
        cols = [IDX[n] for n in MASK[ch]]
        Am = A_[:, cols]
        M = Am.T @ Am + ridge*np.eye(len(cols))
        r = np.linalg.solve(M, Am.T @ y)
        full = np.zeros(len(LN)); full[cols] = r
        R[ch] = full
        res = Am @ r - y
        loss += float(res @ res); npts += len(y)
    return R, loss, npts

def objective(logtheta):
    theta = np.exp(logtheta)
    theta[-1] = min(theta[-1], 1.0)
    try:
        _, loss, npts = solve_readouts(theta)
        return loss
    except Exception:
        return 1e9

theta0 = np.array([20, 2.7, 0.004, 0.004, 0.005, 0.004, 0.002, 2400, 1.15, 0.9])
res = minimize(objective, np.log(theta0), method="Nelder-Mead",
               options={"maxiter": 4000, "maxfev": 4000, "xatol":1e-3, "fatol":1e-4})
theta = np.exp(res.x); theta[-1] = min(theta[-1], 1.0)
R, loss, npts = solve_readouts(theta)
names = ["tau_f","e","ka0","kb0","ka3","kb3","ka5","lamA","kA","supp"]
print("theta:", {n: round(v,5) for n,v in zip(names, theta)})
print("rms:", round(float(np.sqrt(loss/npts)),4), "npts:", npts)
print("\nreadouts:")
for ch in CHANNELS:
    s = ", ".join(f"{n}:{R[ch][IDX[n]]:+.3f}" for n in MASK[ch])
    print(f"ch{ch:2d}: {s}")

X, Y = collect(theta)
print("\nper-channel rms / worst:")
for ch in CHANNELS:
    A_ = np.array(X[ch]); y = np.array(Y[ch])
    r = A_ @ R[ch] - y
    print(f"ch{ch:2d}: rms={np.sqrt(np.mean(r**2)):.3f} n={len(y)} max={np.max(np.abs(r)):.3f}")

import pickle
with open("/app/physim/model.pkl","wb") as f:
    pickle.dump({"theta":theta, "R":R, "MASK":MASK, "LN":LN, "BASE":BASE}, f)
print("saved model.pkl")
app/physim/fit3.py (4,284 chars)
import numpy as np
from scipy.optimize import minimize
import data

CHANNELS = [1,4,7,11,12,13,14,16,18,23,25,26,28,31,33,34,36]
BASE = data.BASE
LN = ["A","P0a","P0b","P3a","P3b","P5a","gF0","gF1","gF2","gF3","gF5"]
IDX = {n:i for i,n in enumerate(LN)}
MASK = {
 1:  ["A","P3a","P3b","gF2","gF3"],
 4:  ["A","P0b","gF0"],
 7:  ["A","gF2"],
 11: ["A","P3a","P3b","gF1","gF3"],
 12: ["A","P3b"],
 13: ["A","P3a","P3b","gF3"],
 14: ["A"],
 16: ["A","P3a","P3b","gF2"],
 18: ["A","P0a","P0b","P5a","gF0","gF5"],
 23: ["A","P0a","P0b","P5a","gF0","gF5"],
 25: ["A","P3a","P3b","gF3"],
 26: ["A","gF1"],
 28: ["A","gF1"],
 31: ["A","gF1"],
 33: ["A","gF1"],
 34: ["A","P3a","P3b","gF1"],
 36: ["A","gF1"],
}
PNAMES = ["tau_f","e","l0a","l0b","k0b","l3a","l3b","k3b","l5a","lamA","kA","supp"]

def simulate(segs, theta, dt=5):
    tau_f, e, l0a, l0b, k0b, l3a, l3b, k3b, l5a, lamA, kA, supp = theta
    F = np.zeros(8)
    s0=s3=s5=0.0; t=0.0; Aeff=0.0
    out = []
    for u, dur, obs in segs:
        u = np.asarray(u, float)
        n = int(round(dur / dt))
        for i in range(n):
            F += (u - F) * np.clip(dt / tau_f, 0, 1)
            s0 += abs(F[0])**e * dt
            s3 += abs(F[3])**e * dt
            s5 += abs(F[5])**e * dt
            sfac = 1.0 - supp*min(1.0, max(-F[0], -F[3], 0.0))
            t += dt
            haz = (kA/lamA)*max(t/lamA,1e-9)**(kA-1)
            Aeff += sfac * haz * (1-Aeff) * dt
        P0a = 1-np.exp(-s0/l0a); P0b = 1-np.exp(-(s0/l0b)**k0b)
        P3a = 1-np.exp(-s3/l3a); P3b = 1-np.exp(-(s3/l3b)**k3b)
        P5a = 1-np.exp(-s5/l5a)
        lat = np.array([Aeff,P0a,P0b,P3a,P3b,P5a,
                        F[0]*(1-P0b),F[1],F[2],F[3]*(1-P3b),F[5]*(1-P5a)])
        out.append((lat, obs))
    return out

def collect(theta):
    X = {ch:[] for ch in CHANNELS}; Y = {ch:[] for ch in CHANNELS}
    for name, segs in data.DRAWS.items():
        for lat, obs in simulate(segs, theta):
            if obs is None: continue
            for ch, val in obs.items():
                if ch in X:
                    X[ch].append(lat); Y[ch].append(val - BASE[ch])
    return X, Y

def solve_readouts(theta, ridge=5e-3):
    X, Y = collect(theta)
    R = {}; loss = 0.0; npts=0
    for ch in CHANNELS:
        A_ = np.array(X[ch]); y = np.array(Y[ch])
        cols = [IDX[n] for n in MASK[ch]]
        Am = A_[:, cols]
        r = np.linalg.solve(Am.T @ Am + ridge*np.eye(len(cols)), Am.T @ y)
        full = np.zeros(len(LN)); full[cols] = r
        R[ch] = full
        res = Am @ r - y
        loss += float(res @ res); npts += len(y)
    return R, loss, npts

BOUNDS = [(15,50),(1.8,4.0),(80,900),(500,3000),(1.3,4.0),
          (80,900),(200,2000),(1.3,4.0),(200,3000),(1800,4000),(0.85,1.8),(0.0,1.0)]

def obj(theta):
    theta = np.clip(theta, [b[0] for b in BOUNDS], [b[1] for b in BOUNDS])
    try:
        return solve_readouts(theta)[1]
    except Exception:
        return 1e9

if __name__ == "__main__":
    starts = [
        np.array([30,2.7,250,1100,2.5, 200,550,2.2, 900, 2600,1.1,0.85]),
        np.array([25,2.2,350,1400,2.0, 300,700,2.0, 1200, 3000,1.0,0.5]),
        np.array([40,3.2,180,900,3.0, 150,450,2.6, 700, 2400,1.3,0.9]),
    ]
    best=None
    for s in starts:
        r = minimize(obj, s, method="Powell", bounds=BOUNDS,
                     options={"maxiter":6000,"xtol":1e-3,"ftol":1e-5})
        print("start done, loss", r.fun)
        if best is None or r.fun < best.fun: best = r
    theta = np.clip(best.x, [b[0] for b in BOUNDS], [b[1] for b in BOUNDS])
    R, loss, npts = solve_readouts(theta)
    print("theta:", {n: round(float(v),5) for n,v in zip(PNAMES, theta)})
    print("rms:", round(float(np.sqrt(loss/npts)),4))
    X, Y = collect(theta)
    for ch in CHANNELS:
        A_ = np.array(X[ch]); y = np.array(Y[ch])
        r = A_ @ R[ch] - y
        print(f"ch{ch:2d}: rms={np.sqrt(np.mean(r**2)):.3f} n={len(y)} max={np.max(np.abs(r)):.3f}")
    print("\nreadouts:")
    for ch in CHANNELS:
        s = ", ".join(f"{n}:{R[ch][IDX[n]]:+.3f}" for n in MASK[ch])
        print(f"ch{ch:2d}: {s}")
    import pickle
    with open("/app/physim/model.pkl","wb") as f:
        pickle.dump({"theta":theta, "R":R, "MASK":MASK, "LN":LN, "BASE":BASE, "PNAMES":PNAMES}, f)
    print("saved model.pkl")
app/physim/fit5.py (4,180 chars)
import numpy as np
from scipy.optimize import minimize
import data, pickle

CHANNELS = [1,4,7,11,12,13,14,16,18,23,25,26,28,31,33,34,36]
BASE = data.BASE
LN = ["A","P0a","P0b","P3a","P3b","P3c","P5a","gF0","gF1","gF2","gF3","gF5"]
IDX = {n:i for i,n in enumerate(LN)}
MASK = {
 1:["A","P3a","P3b","P3c","gF2","gF3"], 4:["A","P0b","gF0"], 7:["A","gF2"],
 11:["A","P3a","P3b","P3c","gF1","gF3"], 12:["A","P3b","P3c"], 13:["A","P3a","P3b","P3c","gF3"],
 14:["A"], 16:["A","P3a","P3c","gF2"], 18:["A","P0a","P0b","P5a","gF0","gF5"],
 23:["A","P0a","P0b","P5a","gF0","gF5"], 25:["A","P3a","P3b","P3c","gF3"],
 26:["A","gF1"], 28:["A","gF1"], 31:["A","gF1"], 33:["A","gF1"],
 34:["A","P3a","P3b","P3c","gF1"], 36:["A","gF1"],
}
PN = ["tau_f","e","l0a","l0b","k0b","l3a","l3b","k3b","l3c","k3c","l5a","lamA","kA","supp",
      "w0n","w3n","w5n","beta0","beta3"]

def simulate(segs, th, dt=5):
    (tau_f,e,l0a,l0b,k0b,l3a,l3b,k3b,l3c,k3c,l5a,lamA,kA,supp,w0n,w3n,w5n,beta0,beta3)=th
    F=np.zeros(8); t=0.0; Aeff=0.0
    sp=np.zeros(3); sn=np.zeros(3); out=[]
    for u,dur,obs in segs:
        u=np.asarray(u,float); n=int(round(dur/dt))
        for i in range(n):
            F += (u-F)*min(dt/tau_f,1)
            for j,(p,wn) in enumerate([(0,w0n),(3,w3n),(5,w5n)]):
                a=abs(F[p])**e*dt
                if F[p]>=0: sp[j]+=a
                else: sn[j]+=wn*a
            sfac=1.0-supp*min(1.0,max(-F[0],-F[3],0.0))
            t+=dt
            haz=(kA/lamA)*max(t/lamA,1e-9)**(kA-1)
            Aeff+=sfac*haz*(1-Aeff)*dt
        s0=sp[0]+sn[0]; s3=sp[1]+sn[1]; s5=sp[2]+sn[2]
        nf0=sn[0]/max(s0,1e-9); nf3=sn[1]/max(s3,1e-9)
        mb0=1+beta0*nf0; mb3=1+beta3*nf3
        P0a=1-np.exp(-s0/l0a); P0b=(1-np.exp(-(s0/l0b)**k0b))*mb0
        P3a=1-np.exp(-s3/l3a); P3b=(1-np.exp(-(s3/l3b)**k3b))*mb3
        P3c=(1-np.exp(-(s3/l3c)**k3c))*mb3
        P5a=1-np.exp(-s5/l5a)
        lat=np.array([Aeff,P0a,P0b,P3a,P3b,P3c,P5a,
                      F[0]*max(1-P0b,0),F[1],F[2],F[3]*max(1-P3c,0),F[5]*(1-P5a)])
        out.append((lat,obs))
    return out

def solve(th,ridge=5e-3):
    X={ch:[] for ch in CHANNELS}; Y={ch:[] for ch in CHANNELS}
    for name,segs in data.DRAWS.items():
        for lat,obs in simulate(segs,th):
            if obs is None: continue
            for ch,val in obs.items():
                if ch in X: X[ch].append(lat); Y[ch].append(val-BASE[ch])
    R={}; loss=0.0; npts=0
    for ch in CHANNELS:
        A_=np.array(X[ch]); y=np.array(Y[ch]); cols=[IDX[n] for n in MASK[ch]]
        Am=A_[:,cols]
        r=np.linalg.solve(Am.T@Am+ridge*np.eye(len(cols)),Am.T@y)
        full=np.zeros(len(LN)); full[cols]=r; R[ch]=full
        res=Am@r-y; loss+=float(res@res); npts+=len(y)
    return R,loss,npts,X,Y

B=[(15,55),(1.8,4.0),(80,900),(400,3000),(1.5,4.0),(80,900),(200,2000),(1.2,4.0),
   (300,3000),(1.5,5.0),(200,3000),(1800,4000),(0.85,1.8),(0.0,1.0),
   (0.3,2.5),(0.3,2.5),(0.1,2.0),(0.0,0.6),(0.0,0.6)]

def obj(th):
    th=np.clip(th,[b[0] for b in B],[b[1] for b in B])
    try: return solve(th)[1]
    except Exception: return 1e9

if __name__=="__main__":
    starts=[np.array([45,2.75,510,616,1.9,206,295,1.5,900,3.0,620,2860,1.17,0.17,2.37,0.59,0.36,0.05,0.6]),
            np.array([30,2.3,300,900,2.5,250,500,2.0,700,2.5,800,2600,1.1,0.5,1.2,1.0,0.4,0.1,0.3])]
    best=None
    for s in starts:
        r=minimize(obj,s,method="Powell",bounds=B,options={"maxiter":10000,"xtol":1e-3,"ftol":1e-5})
        print("loss",r.fun)
        if best is None or r.fun<best.fun: best=r
    th=np.clip(best.x,[b[0] for b in B],[b[1] for b in B])
    R,loss,npts,X,Y=solve(th)
    print("theta:",{n:round(float(v),4) for n,v in zip(PN,th)})
    print("rms:",round(float(np.sqrt(loss/npts)),4))
    for ch in CHANNELS:
        A_=np.array(X[ch]); y=np.array(Y[ch]); r=A_@R[ch]-y
        print(f"ch{ch:2d}: rms={np.sqrt(np.mean(r**2)):.3f} max={np.max(np.abs(r)):.3f}")
    print("readouts:")
    for ch in CHANNELS:
        print(f"ch{ch:2d}:", ", ".join(f"{n}:{R[ch][IDX[n]]:+.3f}" for n in MASK[ch]))
    pickle.dump({"theta":th,"R":R,"MASK":MASK,"LN":LN,"BASE":BASE,"PN":PN},open("/app/physim/model.pkl","wb"))
    print("saved")
app/physim/fit6.py (4,621 chars)
import numpy as np
from scipy.optimize import minimize
import data, pickle

CHANNELS = [1,4,7,11,12,13,14,16,18,23,25,26,28,31,33,34,36]
BASE = data.BASE
LN = ["A","P0a","P0b","P3a","P3b","P3c","P5a","FL0","FL3","gF0","gF1","gF2","gF3","gF5"]
IDX = {n:i for i,n in enumerate(LN)}
MASK = {
 1:["A","P3a","P3b","P3c","FL3","gF2","gF3"], 4:["A","P0b","FL0","gF0"], 7:["A","gF2"],
 11:["A","P3a","P3b","P3c","FL3","gF1","gF3"], 12:["A","P3b","P3c","FL3"],
 13:["A","P3a","P3b","P3c","FL3","gF3"], 14:["A"],
 16:["A","P3a","P3c","FL3","gF2"],
 18:["A","P0a","P0b","P5a","FL0","gF0","gF5"],
 23:["A","P0a","P0b","P5a","FL0","gF0","gF5"],
 25:["A","P3a","P3b","P3c","FL3","gF3"],
 26:["A","gF1"], 28:["A","gF1"], 31:["A","gF1"], 33:["A","gF1"],
 34:["A","P3a","P3b","P3c","FL3","gF1"], 36:["A","gF1","FL3"],
}
PN = ["tau_f","e","l0a","l0b","k0b","l3a","l3b","k3b","l3c","k3c","l5a","lamA","kA","supp",
      "w5n","uc","zc"]
# flip: z_p += max(-u_p - uc, 0)*dt ; flip when z_p >= zc  (ports 0 and 3)
# when flipped: gradual P_p* zeroed, FL_p=1, fast gain gated to 10%

def simulate(segs, th, dt=5):
    (tau_f,e,l0a,l0b,k0b,l3a,l3b,k3b,l3c,k3c,l5a,lamA,kA,supp,w5n,uc,zc)=th
    F=np.zeros(8); t=0.0; Aeff=0.0
    s=np.zeros(3)  # gradual stress ports 0,3,5 (positive-drive only for 0,3; both signs for 5)
    z=np.zeros(2); fl=[False,False]
    out=[]
    for u,dur,obs in segs:
        u=np.asarray(u,float); n=int(round(dur/dt))
        for i in range(n):
            F += (u-F)*min(dt/tau_f,1)
            # gradual stress
            if F[0]>0: s[0]+=F[0]**e*dt
            if F[3]>0: s[1]+=F[3]**e*dt
            s[2]+=(abs(F[5])**e)*(1.0 if F[5]>=0 else w5n)*dt
            # flip clocks (use input directly for crispness)
            z[0]+=max(-u[0]-uc,0)*dt
            z[1]+=max(-u[3]-uc,0)*dt
            if z[0]>=zc: fl[0]=True
            if z[1]>=zc: fl[1]=True
            sfac=1.0-supp*min(1.0,max(-F[0],-F[3],0.0))
            t+=dt
            haz=(kA/lamA)*max(t/lamA,1e-9)**(kA-1)
            Aeff+=sfac*haz*(1-Aeff)*dt
        P0a=1-np.exp(-s[0]/l0a); P0b=1-np.exp(-(s[0]/l0b)**k0b)
        P3a=1-np.exp(-s[1]/l3a); P3b=1-np.exp(-(s[1]/l3b)**k3b)
        P3c=1-np.exp(-(s[1]/l3c)**k3c)
        P5a=1-np.exp(-s[2]/l5a)
        g0=max(1-P0b,0); g3=max(1-P3c,0)
        if fl[0]: P0a=P0b=0.0; g0=0.1
        if fl[1]: P3a=P3b=P3c=0.0; g3=0.1
        lat=np.array([Aeff,P0a,P0b,P3a,P3b,P3c,P5a,float(fl[0]),float(fl[1]),
                      F[0]*g0,F[1],F[2],F[3]*g3,F[5]*(1-P5a)])
        out.append((lat,obs))
    return out

def solve(th,ridge=5e-3):
    X={ch:[] for ch in CHANNELS}; Y={ch:[] for ch in CHANNELS}
    for name,segs in data.DRAWS.items():
        for lat,obs in simulate(segs,th):
            if obs is None: continue
            for ch,val in obs.items():
                if ch in X: X[ch].append(lat); Y[ch].append(val-BASE[ch])
    R={}; loss=0.0; npts=0
    for ch in CHANNELS:
        A_=np.array(X[ch]); y=np.array(Y[ch]); cols=[IDX[n] for n in MASK[ch]]
        Am=A_[:,cols]
        r=np.linalg.solve(Am.T@Am+ridge*np.eye(len(cols)),Am.T@y)
        full=np.zeros(len(LN)); full[cols]=r; R[ch]=full
        res=Am@r-y; loss+=float(res@res); npts+=len(y)
    return R,loss,npts,X,Y

B=[(15,55),(1.8,4.0),(80,900),(400,3000),(1.5,4.0),(80,900),(200,2000),(1.2,4.0),
   (300,3000),(1.5,5.0),(200,3000),(1800,4000),(0.85,1.8),(0.0,1.0),
   (0.1,2.0),(0.45,0.68),(5,40)]

def obj(th):
    th=np.clip(th,[b[0] for b in B],[b[1] for b in B])
    try: return solve(th)[1]
    except Exception: return 1e9

if __name__=="__main__":
    starts=[np.array([48,2.4,494,635,2.1,515,251,4.0,948,5.0,733,2900,1.13,0.56,0.38,0.58,25]),
            np.array([30,2.7,300,900,2.5,300,400,2.5,800,3.0,800,2600,1.1,0.8,0.5,0.6,30])]
    best=None
    for st in starts:
        r=minimize(obj,st,method="Powell",bounds=B,options={"maxiter":12000,"xtol":1e-3,"ftol":1e-5})
        print("loss",r.fun)
        if best is None or r.fun<best.fun: best=r
    th=np.clip(best.x,[b[0] for b in B],[b[1] for b in B])
    R,loss,npts,X,Y=solve(th)
    print("theta:",{n:round(float(v),4) for n,v in zip(PN,th)})
    print("rms:",round(float(np.sqrt(loss/npts)),4),"npts",npts)
    for ch in CHANNELS:
        A_=np.array(X[ch]); y=np.array(Y[ch]); r=A_@R[ch]-y
        print(f"ch{ch:2d}: rms={np.sqrt(np.mean(r**2)):.3f} max={np.max(np.abs(r)):.3f}")
    print("readouts:")
    for ch in CHANNELS:
        print(f"ch{ch:2d}:", ", ".join(f"{n}:{R[ch][IDX[n]]:+.3f}" for n in MASK[ch]))
    pickle.dump({"theta":th,"R":R,"MASK":MASK,"LN":LN,"BASE":BASE,"PN":PN},open("/app/physim/model.pkl","wb"))
    print("saved")
app/physim/predict.py (2,641 chars)
import numpy as np, pickle

_m = pickle.load(open("/app/physim/model.pkl","rb"))
TH = _m["theta"]; R = _m["R"]; LN = _m["LN"]; BASE = _m["BASE"]
IDX = {n:i for i,n in enumerate(LN)}
ALL_CH = sorted(R.keys())
NOISE = 0.05
# observed floors/ceilings (from all experiments); clamp predictions
CLAMP = {18:(-0.68,0.70), 23:(-0.87,0.02), 1:(-0.30,0.66), 11:(-0.86,0.30),
         13:(-1.15+0.384,0.76), 25:(-0.47,0.25), 34:(-0.93,-0.40), 33:(-0.51,-0.10),
         16:(-0.51,-0.19), 31:(0.24,0.55), 26:(0.27,0.54), 28:(0.22,0.50),
         36:(-0.82,-0.57), 4:(-0.43,-0.25), 7:(-0.79,-0.54), 12:(-0.64,-0.42), 14:(-0.09,0.17)}

def trajectory(segments, channels=None, dt=1):
    (tau_f,e,l0a,l0b,k0b,l3a,l3b,k3b,l3c,k3c,l5a,lamA,kA,supp,w5n,uc,zc)=TH
    channels = channels or ALL_CH
    F=np.zeros(8); t=0.0; Aeff=0.0
    s=np.zeros(3); z=np.zeros(2); fl=[False,False]
    total = sum(int(round(d)) for _,d in segments)
    Y = {ch: np.empty(total) for ch in channels}
    i0=0
    for u,dur in segments:
        u=np.asarray(u,float); n=int(round(dur))
        for i in range(n):
            F += (u-F)*min(dt/tau_f,1)
            if F[0]>0: s[0]+=F[0]**e*dt
            if F[3]>0: s[1]+=F[3]**e*dt
            s[2]+=(abs(F[5])**e)*(1.0 if F[5]>=0 else w5n)*dt
            z[0]+=max(-u[0]-uc,0)*dt
            z[1]+=max(-u[3]-uc,0)*dt
            if z[0]>=zc: fl[0]=True
            if z[1]>=zc: fl[1]=True
            sfac=1.0-supp*min(1.0,max(-F[0],-F[3],0.0))
            t+=dt
            haz=(kA/lamA)*max(t/lamA,1e-9)**(kA-1)
            Aeff+=sfac*haz*(1-Aeff)*dt
            P0a=1-np.exp(-s[0]/l0a); P0b=1-np.exp(-(s[0]/l0b)**k0b)
            P3a=1-np.exp(-s[1]/l3a); P3b=1-np.exp(-(s[1]/l3b)**k3b)
            P3c=1-np.exp(-(s[1]/l3c)**k3c)
            P5a=1-np.exp(-s[2]/l5a)
            g0=max(1-P0b,0); g3=max(1-P3c,0)
            if fl[0]: P0a=P0b=0.0; g0=0.1
            if fl[1]: P3a=P3b=P3c=0.0; g3=0.1
            lat=np.array([Aeff,P0a,P0b,P3a,P3b,P3c,P5a,float(fl[0]),float(fl[1]),
                          F[0]*g0,F[1],F[2],F[3]*g3,F[5]*(1-P5a)])
            for ch in channels:
                v = BASE[ch] + float(R[ch]@lat)
                if ch in CLAMP:
                    lo,hi = CLAMP[ch]; v = min(max(v,lo),hi)
                Y[ch][i0+i] = v
        i0 += n
    return Y

def tail_mean(segments, channels=None, win=20):
    Y = trajectory(segments, channels=channels)
    return {ch: float(np.mean(y[-win:])) for ch,y in Y.items()}

def window_stats(segments, ch, win=200):
    Y = trajectory(segments, channels=[ch])
    seg = Y[ch][-win:]
    return float(np.mean(seg)), float(np.sqrt(NOISE**2 + np.var(seg)))

Preparation contracts

idchannelbandsuccessreleased finals
10013[-1.09, -0.39]100%-0.75, -0.75, -0.74, -0.76
10111[+0.04, +0.53]100%+0.27, +0.26, +0.28, +0.29
10218[-0.95, -0.37]100%-0.66, -0.64, -0.67, -0.65

Executable theory

accuracy 0.784 · per-stratum {'S1': 0.88, 'S2': 0.83, 'S3': 0.72, 'S4': 0.7} · 4,084 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.6250.0600.10.898
1S1+0.3930.0880.10.926
2S1+0.8760.0770.00.980
3S1+0.2900.0730.10.905
4S2-0.5500.0670.00.984
5S2+0.8780.0770.00.994
6S2+0.4110.0570.40.700
7S2+0.4010.0520.30.765
8S3-0.4780.0740.10.943
9S3+0.4440.0520.20.842
10S3+0.4370.0880.10.874
11S3-0.6860.0620.20.793
12S4-0.6540.0620.10.905
13S4-0.7450.0880.00.976
14S4+0.6020.0880.00.966
15S4-0.4350.0740.00.999
Verbatim log (290 entries)
physim.status({})
physim.status({})
{"budget_left": 200000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start by observing the system's baseline behavior with zero input.
{"ticks_run": 300, "budget_left": 199700}
physim.run({"segments": [{"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Baseline recorded: all 40 sensors sit at nonzero offsets with noise sd ≈ 0.05. Now I'll probe each input port with a step to find which sensors respond.
{"ticks_run": 300, "budget_left": 199400}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 0 clearly moves ch18 (+0.34) and ch23 (−0.23); everything else is noise. Sparse coupling. Probing remaining ports:
{"ticks_run": 500, "budget_left": 198900}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 11, 33, 34, 36], "series": true, "max_numbers": 360})
{"ticks_run": 500, "budget_left": 198400}
physim.run({"segments": [{"t": 300, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 198100}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 197800}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 197500}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 197200}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 196900}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 196600}
Write: /app/physim/notes.md
Ports 6 and 7 are weak. I also see slow drift on port-3-affected channels (ch1, ch11, ch13 keep creeping over 1200 ticks). Let me save findings to disk, then run structured experiments.
physim.reset({})
Now resetting for a fresh draw to (a) sample initial conditions and (b) run clean step-response experiments with time-series.
{"budget_left": 196400}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 100, "budget_left": 196300}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 360})
Fresh draw baseline matches draw #1 closely (within ~0.05) — initial conditions are consistent across draws. Now a clean step-response with time series on ch18/ch23:
{"ticks_run": 400, "budget_left": 195900}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 360})
ch18 shows fast rise then slow creep; ch23 has a fast *positive* bump then a slow, large *negative* drift — two latents with different timescales. Watching the release:
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 360})
ch18 shows fast rise then slow creep; ch23 has a fast *positive* bump then a slow, large *negative* drift — two latents with different timescales. Watching the release:
{"ticks_run": 600, "budget_left": 195300}
physim.run({"segments": [{"t": 1200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 360})
{"ticks_run": 1200, "budget_left": 194100}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all", "series": true, "max_numbers": 360})
{"error": "series observation limited to <=6 channels"}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 800, "budget_left": 192500}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 11, 1], "series": true, "max_numbers": 2000})
{"ticks_run": 100, "budget_left": 192400}
physim.run({"segments": [{"t": 900, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 11, 34, 16, 1], "series": true, "max_numbers": 5400})
{"ticks_run": 900, "budget_left": 191500}
physim.run({"segments": [{"t": 700, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": [18, 23, 11, 34, 16, 1], "series": true, "max_numbers": 2100})
{"ticks_run": 700, "budget_left": 190800}
Edit: /app/physim/notes.md
Edit: /app/physim/notes.md
physim.reset({})
{"budget_left": 190600}
physim.run({"segments": [{"t": 200, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 200})
Fresh draw #3. Now testing whether a *weak* push (u₀=+0.4) latches or fully relaxes:
physim.run({"segments": [{"t": 200, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 200})
Fresh draw #3. Now testing whether a *weak* push (u₀=+0.4) latches or fully relaxes:
{"ticks_run": 200, "budget_left": 190400}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 160})
{"ticks_run": 300, "budget_left": 190100}
physim.run({"segments": [{"t": 300, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23], "series": true, "max_numbers": 240})
Weak push (0.4) fully relaxes — there's an amplitude threshold for latching. Testing 0.6 and 0.8 with resets in between:
{"ticks_run": 700, "budget_left": 189400}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
u=0.6 latches (~-0.14 persistent on ch23). Let me grab an all-channel snapshot of this mildly-latched state to see if cross-channel displacement patterns scale together:
{"ticks_run": 60, "budget_left": 189340}
physim.reset({})
{"budget_left": 189140}
physim.run({"segments": [{"t": 150, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 188990}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 350, "budget_left": 188640}
physim.run({"segments": [{"t": 1000, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 1000, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 187640}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 187240}
physim.reset({})
{"budget_left": 187040}
physim.run({"segments": [{"t": 150, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 186890}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 350, "budget_left": 186540}
physim.run({"segments": [{"t": 1000, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 185540}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 185140}
physim.reset({})
{"budget_left": 184940}
physim.run({"segments": [{"t": 150, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 184790}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 350, "budget_left": 184440}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 183440}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 183040}
physim.reset({})
{"budget_left": 182840}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 182690}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 3 is interesting: fast response is ch13 +0.35, but by 300 ticks slow processes overtake and flip signs. Continuing:
{"ticks_run": 350, "budget_left": 182340}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 181340}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 180940}
physim.reset({})
{"budget_left": 180740}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 180590}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 350, "budget_left": 180240}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 179240}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 178840}
physim.reset({})
Port 5 shares W plus its own private slow (ch18 −0.57 deep, but ch23 barely). Now quick deep-drive batteries for the "weak" ports 4, 6, 7:
{"budget_left": 178640}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 800, "budget_left": 177840}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 177540}
physim.reset({})
{"budget_left": 177340}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 800, "budget_left": 176540}
physim.reset({})
physim.reset({})
{"budget_left": 176340}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 800, "budget_left": 175540}
physim.reset({})
{"budget_left": 175340}
physim.run({"segments": [{"t": 600, "u": [-1, 0, 0, -1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 600, "budget_left": 174740}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Negative drive charges the private slows just as strongly (|u|-driven) but does NOT charge W at all (W is positive-rectified). Checking latch on release:
{"ticks_run": 300, "budget_left": 174440}
physim.reset({})
Privates latch deep; W untouched by negative drive. Now a duration ladder on port 3 to get its private charge curve:
{"budget_left": 174240}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 350, "budget_left": 173890}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 450, "budget_left": 173440}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 650, "budget_left": 172790}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1100, "budget_left": 171690}
physim.reset({})
Port 3's private charge curve captured (ch13 flips + → −0.9 between 300 and 1500 ticks). Now amplitude dependence of port 0's private slow at u=0.5:
{"budget_left": 171490}
physim.run({"segments": [{"t": 500, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 800, "budget_left": 170690}
physim.reset({})
{"budget_left": 170490}
physim.run({"segments": [{"t": 400, "u": [1, 1, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 750, "budget_left": 169740}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 750, "budget_left": 168990}
physim.run({"segments": [{"t": 2500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Re-drive continues charging toward saturation as expected. Now testing very-long-idle stability of the latched state (2500 ticks):
{"ticks_run": 2500, "budget_left": 166490}
physim.reset({})
physim.reset({})
{"budget_left": 166290}
physim.run({"segments": [{"t": 1200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1200, "budget_left": 165090}
physim.reset({})
{"budget_left": 164890}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [33, 34, 31, 16, 1, 11]})
{"ticks_run": 600, "budget_left": 164290}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [33, 34, 31, 16, 1, 11]})
{"ticks_run": 600, "budget_left": 163690}
physim.run({"segments": [{"t": 1200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [33, 34, 31, 16, 1, 11]})
{"ticks_run": 1200, "budget_left": 162490}
physim.run({"segments": [{"t": 1600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1600, "budget_left": 160890}
physim.reset({})
Pure aging curve captured: ~19% @600, ~46% @1200, ~58% @2400, ~85% @4000 ticks. Now checking whether negative drive suppresses aging (the earlier negative-drive run aged suspiciously slowly):
{"budget_left": 160690}
physim.run({"segments": [{"t": 1200, "u": [0, -1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1200, "budget_left": 159490}
physim.reset({})
Negative port 1 ages normally — the suppression was specific to ports 0/3 negative drive (or draw variability). One more probe: port 5 negative from fresh:
physim.reset({})
Negative port 1 ages normally — the suppression was specific to ports 0/3 negative drive (or draw variability). One more probe: port 5 negative from fresh:
{"budget_left": 159290}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, -1, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1100, "budget_left": 158190}
Write: /app/physim/data.py
Now I'll compile all collected data into a Python dataset and fit a quantitative model offline.
Edit: /app/physim/data.py
Edit: /app/physim/data.py
Write: /app/physim/fit.py
Now the fitting script — cascade-latch model (each of ports 0/3/5 has a fast-charging latch feeding a slower opposite-sign latch, plus autonomous aging A(t), plus reversible fast latents):
Write: /app/physim/fit2.py
The fit works but has degeneracies (ill-conditioned P5 cascade, fast-gain compression in charged states). Refining with structural masks, gain gating, and aging suppression:
The optimizer wandered into nonsense (τ_f=336, e=12.7). Adding bounds and restarts:
The optimizer wandered into nonsense (τ_f=336, e=12.7). Adding bounds and restarts:
Write: /app/physim/fit3.py
The cascade structure is wrong — the slow "b" latch charges only while driven (sigmoid in integrated drive), not from the latched "a". Rewriting the model:
Progress — but negative drives break the fit: port 3 charges *faster/deeper* under negative drive, port 5 *slower*. Adding sign-dependent rate weights and saturation multipliers:
Overall rms 0.037. Let me inspect where the worst residuals live, then validate against live held-out protocols:
Overall rms 0.037. Let me inspect where the worst residuals live, then validate against live held-out protocols:
Write: /app/physim/fit5.py
ch13 needs its own late latent (shared P3b can't serve both ch11 and ch13). Adding a third port-3 latent and refitting:
Write: /app/physim/predict.py
Model rms is 0.031 overall. Writing the predictor module, then validating against live multi-stage protocols the model hasn't seen:
physim.reset({})
{"budget_left": 157990}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channel)
{"ticks_run": 1300, "budget_left": 156690}
physim.reset({})
Validation exposes a big miss: negative port-0 drive (−0.7 × 300) fully charged P0 (avalanche/bistable flip), while the model expected partial charge. Probing the negative-drive threshold:
physim.reset({})
Validation exposes a big miss: negative port-0 drive (−0.7 × 300) fully charged P0 (avalanche/bistable flip), while the model expected partial charge. Probing the negative-drive threshold:
{"budget_left": 156490}
physim.run({"segments": [{"t": 200, "u": [-0.4, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 1, 13, 11, 25]})
{"ticks_run": 500, "budget_left": 155990}
physim.run({"segments": [{"t": 100, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 1, 13, 11, 25]})
{"ticks_run": 400, "budget_left": 155590}
physim.run({"segments": [{"t": 150, "u": [-0.7, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 1, 13, 11, 25]})
{"ticks_run": 450, "budget_left": 155140}
physim.reset({})
Avalanche threshold found for port 0 negative (~150-250 ticks at 0.7). Refining the threshold and checking port 3's:
{"budget_left": 154940}
physim.run({"segments": [{"t": 80, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 1, 13, 11, 25]})
{"ticks_run": 330, "budget_left": 154610}
physim.reset({})
{"budget_left": 154410}
physim.run({"segments": [{"t": 400, "u": [-0.55, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 23, 1, 13, 11, 25]})
{"ticks_run": 650, "budget_left": 153760}
physim.reset({})
Port 0's flip needs amplitude > ~0.6 (−0.55×400 does nothing). Checking port 3's negative flip threshold:
physim.reset({})
Port 0's flip needs amplitude > ~0.6 (−0.55×400 does nothing). Checking port 3's negative flip threshold:
{"budget_left": 153560}
physim.run({"segments": [{"t": 80, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [1, 11, 13, 25, 18, 23]})
{"ticks_run": 330, "budget_left": 153230}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 60, "budget_left": 153170}
Write: /app/physim/fit6.py
Write: /app/physim/fit6.py
Write: /app/physim/predict.py
Residual errors are in exotic corners (post-flip floors, aging on ch13). Adding per-channel clamps and updating the predictor to the flip model:
physim.reset({})
Now validation V2 — a different multi-stage shape (weak port-2 push, port-5 negative, port-1 drive, long settle):
physim.reset({})
Now validation V2 — a different multi-stage shape (weak port-2 push, port-5 negative, port-1 drive, long settle):
{"budget_left": 152970}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0.6, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, -0.8, 0, 0]}, {"t": 400, "u": [0, 0.9, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "chann)
{"ticks_run": 1550, "budget_left": 151420}
physim.reset({})
V2 validates beautifully (mean error 0.023). One more validation on the tricky port 0/3 positive gradual dynamics with during-drive checkpoints:
{"budget_left": 151220}
physim.run({"segments": [{"t": 500, "u": [0.75, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 150720}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1050, "budget_left": 149670}
physim.ready({})
{"phase": "answer"}
16 prediction contracts + 3 preparation contracts. The preparation contracts are all solvable via the avalanche flips I discovered (robust, binary outcomes). Computing predictions:
16 prediction contracts + 3 preparation contracts. The preparation contracts are all solvable via the avalanche flips I discovered (robust, binary outcomes). Computing predictions:
physim.reset({})
Now verifying the prep-contract policies live (flip-based, should be robust). Testing whether experiments still run in answer phase:
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": -0.631, "low": -0.685, "high": -0.577}, {"id": 1, "mean": 0.386, "low": 0.332, "high": 0.44}, {"id": 2, "mean": 0.878, "low": 0.834, "high": 0.922}, {"id": 3, "mean": 0.)
{"received": 16}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # Flip port-3 branch: strong negative drive latches ch13 to ~-0.75,\n    # squarely inside the band [-1.092, -0.389]; the flip is permanent.\n    u = [)
Now the three preparation policies — all exploit the robust avalanche flip (triggers in <60 ticks at full negative drive, lands on a tight, permanent branch):
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Flip port-3 branch: ch11 latches to ~+0.27 (plus slow upward aging drift),\n    # inside the band [0.038, 0.531]; permanent once flipped.\n    u = [0)
physim.answer_prep({"id": 102, "code": "def policy(t, y, mem):\n    # Flip port-0 branch: ch18 latches to ~-0.65, inside band [-0.952, -0.366].\n    u = [0.0]*8\n    if not mem.get('done', False):\n        u[0] = -1.0\n)
All contracts answered. Now the optional theory bonus — generating an executable init/step simulator from the fitted model:
All contracts answered. Now the optional theory bonus — generating an executable init/step simulator from the fitted model:
physim.submit_theory({"code": "import math\n\n# Executable theory of the hidden system.\n# Latent structure discovered by experiment:\n#  - 40 sensors = fixed offsets + linear readout of latent state + white noise (sd~0.0)
Edit: /app/physim/notes.md
All submissions complete. Updating the notes file with the final summary:
Investigation complete — all 16 prediction contracts answered, all 3 preparation policies submitted, and the executable theory recorded. Here's the TLDR of what I found and did:

## The hidden system

40 sensors read a small set of latent variables plus white noise (sd ≈ 0.05). Through ~50k ticks of experiments (staying well within budget), I identified four mechanisms:

1. **Fast reversible respo
anthropic/claude-fable-5 · C3 seed 1 · tier tools · accuracy 0.89 · preparation 1.00 · theory 0.87 · budget 30%

S1=0.91 · S2=0.89 · S3=0.96 · S4=0.80 · coverage 1.00 · 339 nodes

Narrative experiment log

timeline
  1. 2× free run (600 ticks; 300 ticks, all inputs 0).
  2. 2× single-port probe (700 ticks; port 0 at +0.12, 250t) — ch36 +0.02→+0.21.
  3. Free run (600 ticks; 600 ticks, all inputs 0).
  4. 11× single-port probe (2,750 ticks; port 2 at +0.12, 250t).
  5. 2× drive → release (1,100 ticks; drive -0.12 for 250t, release 350t).
  6. Single-port probe (800 ticks; port 0 at +0.12, 800t).
  7. 5× drive → release (2,600 ticks; drive -0.12 for 250t, release 250t).
  8. Reset to fresh initial conditions (−200 ticks).
  9. Free run (150 ticks; 150 ticks, all inputs 0).
  10. 6× drive → release (3,700 ticks; drive -0.07 for 650t, release 100t) — ch22 +0.61→-0.52, ch25 -0.68→+0.23, ch14 -0.01→-0.86.
  11. Free run (500 ticks; 500 ticks, all inputs 0).
  12. Reset to fresh initial conditions (−200 ticks).
  13. Multi-port probe (500 ticks; ports [0, 1, 3] at +0.38, 500t).
  14. 2× free run (400 ticks; 300 ticks, all inputs 0) — ch25 -0.31→+0.19, ch34 +0.01→+0.26, ch12 +0.02→-0.15.
  15. 2× drive → release (600 ticks; drive -0.38 for 200t, release 100t).
  16. 3× free run (3,000 ticks; 800 ticks, all inputs 0).
  17. Reset to fresh initial conditions (−200 ticks).
  18. Multi-port probe (600 ticks; ports [5, 6, 7] at -0.38, 600t).
  19. Free run (150 ticks; 150 ticks, all inputs 0).
  20. Single-port probe (400 ticks; port 0 at +0.12, 400t) — ch26 -0.20→-0.79, ch14 +0.03→+0.39, ch9 -0.10→+0.10.
  21. Free run (400 ticks; 400 ticks, all inputs 0) — ch22 +0.75→-0.38, ch14 +0.39→-0.59, ch25 -0.71→+0.16.
  22. Single-port probe (400 ticks; port 1 at +0.12, 400t) — ch26 -0.15→+0.11, ch6 -0.06→-0.25, ch36 +0.01→+0.18.
  23. 2× free run (1,000 ticks; 400 ticks, all inputs 0).
  24. Reset to fresh initial conditions (−200 ticks).
  25. Drive → release (750 ticks; drive +0.12 for 250t, release 500t).
  26. Reset to fresh initial conditions (−200 ticks).
  27. Reset to fresh initial conditions (−200 ticks).
  28. Drive → release (925 ticks; drive +0.12 for 425t, release 500t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Drive → release (975 ticks; drive +0.12 for 475t, release 500t).
  31. Reset to fresh initial conditions (−200 ticks).
  32. Drive → release (1,050 ticks; drive +0.12 for 550t, release 500t).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Drive → release (1,400 ticks; drive +0.12 for 900t, release 500t).
  35. Reset to fresh initial conditions (−200 ticks).
  36. Drive → release (1,200 ticks; drive +0.12 for 700t, release 500t).
  37. 2× free run (1,400 ticks; 700 ticks, all inputs 0).
  38. Reset to fresh initial conditions (−200 ticks).
  39. Drive → release (1,100 ticks; drive +0.12 for 500t, release 600t).
  40. Reset to fresh initial conditions (−200 ticks).
  41. Drive → release (850 ticks; drive +0.12 for 250t, release 600t).
  42. Reset to fresh initial conditions (−200 ticks).
  43. 2× single-port probe (1,000 ticks; port 0 at -0.06, 400t) — ch26 -0.11→-0.32.
  44. Free run (300 ticks; 300 ticks, all inputs 0).
  45. 5× single-port probe (1,500 ticks; port 1 at -0.05, 300t) — ch6 -0.07→-0.62.
  46. Drive → release (500 ticks; drive -0.12 for 300t, release 200t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. Single-port probe (500 ticks; port 1 at -0.04, 500t).
  49. Reset to fresh initial conditions (−200 ticks).
  50. 4× drive → release (2,700 ticks; drive -0.03 for 500t, release 200t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Drive → release (700 ticks; drive -0.38 for 400t, release 300t).
  53. Reset to fresh initial conditions (−200 ticks).
  54. Multi-port probe (300 ticks; ports [0, 1, 3] at +0.38, 300t).
  55. Free run (500 ticks; 500 ticks, all inputs 0).
  56. Reset to fresh initial conditions (−200 ticks).
  57. 3× single-port probe (1,100 ticks; port 0 at +0.12, 300t) — ch26 -0.31→+0.03, ch14 -0.50→-0.68.
  58. 2× free run (800 ticks; 400 ticks, all inputs 0).
  59. Reset to fresh initial conditions (−200 ticks).
  60. 4× single-port probe (1,700 ticks; port 3 at +0.12, 300t) — ch15 +0.04→+0.55, ch36 +0.19→-0.24, ch6 -0.17→-0.56.
  61. 2× drive → release (1,400 ticks; drive +0.12 for 300t, release 400t).
  62. Reset to fresh initial conditions (−200 ticks).
  63. Drive → release (800 ticks; drive -1.00 for 500t, release 300t).
  64. Reset to fresh initial conditions (−200 ticks).
  65. Reset to fresh initial conditions (−200 ticks).
  66. Drive → release (900 ticks; drive +1.00 for 500t, release 400t).
  67. Free run (1,000 ticks; 1000 ticks, all inputs 0) — ch7 -0.74→-0.57.
  68. Reset to fresh initial conditions (−200 ticks).
  69. 2× drive → release (755 ticks; drive -0.12 for 140t, release 300t) — ch36 +0.02→-0.68.
  70. 2× ramp sweep (1,200 ticks; 750 ticks, peak mean drive -0.12).
  71. Reset to fresh initial conditions (−200 ticks).
  72. 2× ramp sweep (1,450 ticks; 550 ticks, peak mean drive -0.12) — ch36 +0.04→-0.67.
  73. Reset to fresh initial conditions (−200 ticks).
  74. Reset to fresh initial conditions (−200 ticks).
  75. Ramp sweep (1,100 ticks; 1100 ticks, peak mean drive -0.12).
  76. Reset to fresh initial conditions (−200 ticks).
  77. Drive → release (900 ticks; drive -0.07 for 700t, release 200t).
  78. 2× single-port probe (1,400 ticks; port 0 at +0.06, 600t) — ch26 -0.44→-0.70, ch14 +0.20→+0.35.
  79. 2× free run (1,200 ticks; 500 ticks, all inputs 0).
  80. Reset to fresh initial conditions (−200 ticks).
  81. 2× drive → release (2,020 ticks; drive +0.12 for 510t, release 500t).
  82. Reset to fresh initial conditions (−200 ticks).
  83. Drive → release (1,010 ticks; drive +0.12 for 510t, release 500t).
  84. Reset to fresh initial conditions (−200 ticks).
  85. Drive → release (1,000 ticks; drive -0.12 for 600t, release 400t).
  86. Reset to fresh initial conditions (−200 ticks).
  87. Closed-loop policy (600 ticks; 600t — "goal: drive ch14 into deep-lean band ~ [0.2, 0.35] and hold it").
  88. Ended exploration → received 16 prediction contracts + 3 preparation contracts.
  89. ✗ free run rejected: exploration is over; reply with the answers object.
  90. Submitted 16 contract answers.
  91. Submitted preparation policy for contract 100 ("Goal: ch22 tail in [-0.766, -0.243] after free run.").
  92. Submitted preparation policy for contract 101 ("Goal: ch25 tail in [0.005, 0.427] after free run.").
  93. Submitted preparation policy for contract 102 ("Goal: ch14 tail in [-1.129, -0.6] after free run.").
  94. Submitted an executable theory (2,993 chars).

Agent-written files (its instruments & theories)

app/exp/log.md (4,923 chars)
# physim exploration log
World: 8 in, 40 out, noise sd ~0.05, obs window 20 ticks.
Baseline1 (t300 zero): ch0 0.769 ch1 -0.923 ch2 0.196 ch3 -0.184 ch4 -0.724 ch5 -0.494 ch6 -0.039 ch7 -0.854 ch8 -0.079 ch9 -0.107 ch10 -0.673 ch11 -0.520 ch12 0.410 ch13 -0.554 ch14 0.027 ch15 0.062 ch16 -0.081 ch17 0.120 ch18 0.727 ch19 -0.379 ch20 0.738 ch21 -0.561 ch22 0.647 ch23 0.331 ch24 -0.515 ch25 -0.684 ch26 -0.222 ch27 -0.892 ch28 0.491 ch29 0.308 ch30 -0.724 ch31 -0.492 ch32 -0.112 ch33 0.751 ch34 -0.369 ch35 -0.397 ch36 0.013 ch37 -0.868 ch38 0.552 ch39 0.077
Port0=+1 (250t): ch9 +0.13->0.01, ch14 ->0.26, ch22 ->0.80, ch25 ->-0.81, ch26 ->-0.57
Port1=+1 (after 200 zero): ch36 ->0.21, ch33 ->0.78; ch9/14/22/26 did NOT relax fully
Zero 600t: ch14 stays 0.20, ch22 0.71, ch26 -0.45, ch36 decays ->0.13, ch9 stays 0.0
=> PERSISTENT MEMORY / hysteresis. Sensors look like noisy bounded (tanh-ish) readouts.

## Structure (established)
3 independent bistable latent groups; fresh draws always start at default attractor A0.
- Group0 <- port0. Sensors: 9,14,22,25,26. Flip threshold -0.7±0.1 (flips at -0.8 fast, -0.6 no in 150t)
- Group1 <- port1 (port2 weak). Sensors: 6,36 (33?). Flips at -0.6 (~120t delay, stochastic), -0.4 no.
- Group1 D: ch6 -0.62, ch36 -0.68
- Group3 <- port3 (port4 weak). Sensors: 8,12,15,32,34. Flips at -0.8, -0.6 no (150t).
- Down flips are ABSORBING: +1 (even 800t) cannot reverse. Weak pushes reversible, return to A0.
- Transition time ~40-60 ticks at amp>=0.8.
- Ports 5,6,7: no effect at ±1 (250t). Port2 ±1: tiny ch6 shifts. Port4 +1: ch12 -0.12 shift.

## A0 baseline (fresh draw, reproducible across draws!)
ch0 0.769 ch1 -0.95 ch2 0.18 ch3 -0.18 ch4 -0.73 ch5 -0.50 ch6 -0.05 ch7 -0.85 ch8 -0.09 ch9 -0.108 ch10 -0.66 ch11 -0.51 ch12 0.39 ch13 -0.555 ch14 0.01 ch15 0.06 ch16 -0.08 ch17 0.12 ch18 0.73 ch19 -0.39 ch20 0.75 ch21 -0.57 ch22 0.64 ch23 0.325 ch24 -0.53 ch25 -0.685 ch26 -0.22 ch27 -0.90 ch28 0.49 ch29 0.32 ch30 -0.72 ch31 -0.51 ch32 -0.11 ch33 0.755 ch34 -0.34 ch35 -0.40 ch36 0.02 ch37 -0.87 ch38 0.56 ch39 0.08

## D-state levels (all 3 groups flipped down; stable, no drift over 500t)
ch6 -0.627 ch8 -0.403 ch9 0.207 ch12 -0.391 ch14 -0.860 ch15 0.656 ch22 -0.491 ch25 0.225 ch26 0.459 ch32 0.322 ch34 0.451 ch36 -0.685; all others = A0 values
Noise sd ~0.045-0.06 all channels, all states.

## REVISED MODEL (as of budget 153k)
Per group g in {0,1,3}: fast bistable unit f_g + slow adaptation s_g (tau_s ~ 400-800).
States: UP=(f+,s+)=A0, MID=(f+,s-)=M, DOWN=(f-,s-)=D. D absorbing (confirmed +1@400-800 from D does nothing, all groups).
Negative drive: flips f fast; both f,s flip during sustained drive -> D immediately at release.
  Escape thresholds (amp, duration to flip): g0: -0.4:no@150; -0.6: no@150, YES@<=600; -0.8: ~40t; -1: ~30t
  g1: -0.2: no@400; -0.3: YES@<=400; -0.4: no@150, YES@<=300; -0.6: ~120t; -1: ~30t
  g3: -0.6 no@150; -0.8: ~40t. (assume similar to g0)
Positive drive +1: up-state persists but adaptation builds; in-drive crash at T~450-550 (g0), ~400-600 (g1 crash seen @700 in-drive), ~300-500 (g3: up@200, crashed@600 in-drive).
  Post-release outcome vs hold T (amp +1):
  g0: T<=375 UP(lean grows w/ T: ch14 0.10@150, 0.20@325, 0.275@375), T>=450 -> crash->D (slow settle tau~700)
  g1: T<=400 UP-lean; T=600 -> MID (ch36 -0.05, ch6 -0.48, STABLE 700+); T>=800 -> D (slow)
  g3: T=150 UP-lean (ch8 -0.20, ch34 -0.47); T=250 UP-lean bigger (ch8 -0.27); T>=400 -> D (slow settle)
UP-lean (A0') states persist >2500t (quasi-stable continuum).
Weak pushes reversible: gains per unit u (during, ~300t):
  p0: ch14 +0.14, ch22 +0.15, ch25 -0.17, ch26 -0.21 (+0.5: ch26 -0.10 hmm; roughly linear +-0.5)
  p3: ch8 -0.13, ch34 -0.19, ch15 +0.10?, ch12 +0.03 per unit
  p1: ch36 +0.17@+1 (during, 300t): ch36 0.19, ch6 -0.12? (mixed w/ s-lean)
  p2: inert (-1@400 no flip, tiny lean only). p4: inert from A0 (weak, state-dep). p5,6,7: inert from A0.
DURING -1 (after flip): levels = D levels (no visible feedthrough; saturated).
DURING +1 (up, t<crash): g0: ch14 0.20@200, 0.39@400(other draw); ch22 0.81, ch25 -0.82, ch26 -0.51@200 (creeps: -0.79@400)
Combos: (0,1,3)@-1: independent flips, = D exactly.
  (0,1,3)@+1 T=200: all UP-lean after release. T=500: g0 crash, g1 MID, g3 crash (C state) then slow settle ~ D-ish EXCEPT g1 stays MID.
  all8 @+1 T=400: g0 UP (cross-terms stabilize!), g1 MID, g3 D, groupS ACTIVATED.
  all8 @-1 T=400: same as (0,1,3)@-1: D, groupS unmoved.
GroupS (ch7,37,38; maybe ch10 etc): at A0/D: ch7 -0.85, ch37 -0.87, ch38 0.55. Only moves in mixed/M states (state-dependent susceptibility): drifts to ch7 ~ -0.56..-0.60, ch37 -0.72..-0.84, ch38 0.37, tau~800-1500.
Noise sd ~0.045-0.06; elevated (0.065-0.08) during near-threshold drives (softened well).
Post-crash slow settle: exponential tau ~ 700-900 toward D levels.
A0 EXACT (across draws): see above baseline. Draw-to-draw reproducibility excellent (<0.02).
app/.vf-claude/282eb5c266b44627a82848f7eed4a0bf/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-13T20:29:20.508Z",
  "machineID": "8f2635501cafbecbdc662b0adbae3a3a04b595a17dbcd8e5db48c0d330b42583",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "64bc3d4bc284e4e2d9cfed5ce14967e9efa7c75c7f5a0c21e14cb69d75055370"
}
app/.vf-claude/282eb5c266b44627a82848f7eed4a0bf/tasks/ea7a3697-3c5e-4e40-a789-eb80523b8e10/1.json (299 chars)
{
  "id": "1",
  "subject": "Characterize slow mode (ch7/37/38) driven by ports 5-7",
  "description": "Determine which of ports 5,6,7 drive the slow latent read by ch7,37,38; sign, threshold, timescale, latching levels, response to +1.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}
app/.vf-claude/282eb5c266b44627a82848f7eed4a0bf/tasks/ea7a3697-3c5e-4e40-a789-eb80523b8e10/2.json (325 chars)
{
  "id": "2",
  "subject": "Single-port response library (during/after) on fresh draws",
  "description": "Ports 0,1,3 at ±0.5, ±0.8, ±1 (and port2, port4 at ±1): all-channel tails during drive and after release; positive-side persistent shift (A0') thresholds.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}
app/.vf-claude/282eb5c266b44627a82848f7eed4a0bf/tasks/ea7a3697-3c5e-4e40-a789-eb80523b8e10/3.json (266 chars)
{
  "id": "3",
  "subject": "Combo-drive library + multi-stage transitions",
  "description": "Pairs/triples at ±1 and ±0.5 during/after; transitions from D states; slow-settle timescales after releases.",
  "status": "completed",
  "blocks": [],
  "blockedBy": []
}
app/.vf-claude/282eb5c266b44627a82848f7eed4a0bf/tasks/ea7a3697-3c5e-4e40-a789-eb80523b8e10/4.json (362 chars)
{
  "id": "4",
  "subject": "Fit offline model; answer contracts; submit theory",
  "description": "Fit per-group latent model (fast flip + slow settle) from series data; build predictor for arbitrary protocols; call ready, answer all contracts with calibrated intervals; submit executable theory.",
  "status": "in_progress",
  "blocks": [],
  "blockedBy": []
}
app/exp/model.py (4,466 chars)
"""Phenomenological model of the hidden system (fitted from ~60k ticks of experiments).

Structure: 3 bistable groups, each = fast unit + slow adaptation; DOWN absorbing.
Groups and primary ports: G0<-port0, G1<-port1, G3<-port3.
Ports 2,4,5,6,7 essentially inert from baseline (weak leans only).
Fresh draws always relax to the SAME baseline attractor A0.
"""
import math

# Baseline A0 sensor values (fresh draw, settled). Averaged across many draws.
A0 = [0.769, -0.947, 0.182, -0.180, -0.730, -0.505, -0.050, -0.845, -0.090,
      -0.107, -0.660, -0.515, 0.390, -0.555, 0.020, 0.065, -0.080, 0.120,
      0.730, -0.390, 0.750, -0.570, 0.640, 0.325, -0.535, -0.690, -0.220,
      -0.900, 0.490, 0.320, -0.725, -0.510, -0.100, 0.755, -0.340, -0.400,
      0.020, -0.870, 0.560, 0.078]

# DOWN-state (absorbing) sensor values, per group (only channels that differ from A0)
D0 = {9: 0.21, 14: -0.86, 22: -0.50, 25: 0.225, 26: 0.455}
D1 = {6: -0.625, 36: -0.68}
D3 = {8: -0.41, 12: -0.39, 15: 0.65, 32: 0.32, 34: 0.44}
MID1 = {6: -0.48, 36: -0.05}          # stable third state of G1
# GroupS slow channels: move only in mixed/M states
S_A0 = {7: -0.845, 37: -0.87, 38: 0.56}
S_ALT = {7: -0.58, 37: -0.75, 38: 0.37}   # tau ~ 1200, only after exotic +1 protocols

# UP-lean tables (persistent shift after +1 pulse of duration T, per group)
# G0 lean by pulse duration at +1 (values = sensor level, not delta)
G0_LEAN = {150: {14: 0.10, 26: -0.33, 9: -0.05, 22: 0.70, 25: -0.73},
           325: {14: 0.20, 26: -0.42, 9: 0.07, 22: 0.775, 25: -0.71},
           375: {14: 0.275, 26: -0.52, 9: 0.12, 22: 0.715, 25: -0.69}}
G1_LEAN = {250: {36: 0.13, 6: -0.16}, 400: {36: 0.10, 6: -0.30}}
G3_LEAN = {150: {8: -0.20, 34: -0.47, 15: 0.07, 12: 0.40, 32: -0.07},
           250: {8: -0.27, 34: -0.36, 15: 0.16, 32: 0.02, 12: 0.30}}

# During-drive levels (steady, in UP state, before any crash), amp=+1
DUR_P0_P1 = {200: {14: 0.20, 22: 0.81, 25: -0.82, 26: -0.51, 9: -0.02},
             400: {14: 0.39, 22: 0.75, 25: -0.71, 26: -0.79, 9: 0.10}}
DUR_P0_P05 = {600: {14: 0.20, 22: 0.77, 25: -0.77, 26: -0.44, 9: -0.03},
              1400: {14: 0.35, 22: 0.66, 25: -0.66, 26: -0.70, 9: 0.12}}
DUR_P1_P1 = {300: {36: 0.19, 6: -0.20}}
DUR_P3_P1 = {200: {34: -0.60, 8: -0.20, 12: 0.43, 15: 0.04, 32: -0.11}}
# small-signal during gains (per unit u, ~300t hold) around A0
GAIN = {0: {14: 0.14, 22: 0.15, 25: -0.17, 26: -0.21, 9: 0.02},
        1: {36: 0.17, 6: -0.15},
        3: {8: -0.13, 34: -0.19, 15: 0.10, 12: 0.03, 32: 0.02}}

TAU_SETTLE = 750.0   # exponential settle after crash toward DOWN levels
NOISE_SD = 0.05      # per-tick sensor noise, all channels/states
SD20 = NOISE_SD / math.sqrt(20)  # sem of 20-tick mean ~ 0.011 (plus autocorr -> use 0.015)

# Flip rules (from UP, fast-onset steps). Returns 'down' | 'up' | ('p', prob)
def neg_flip(group, amp, T):
    a = abs(amp)
    if group == 0:
        if a >= 0.75 and T >= 40: return 'down'
        if a >= 0.55:
            if T >= 500: return 'down'
            if T <= 160: return 'up'
            return ('p', min(0.95, (T-160)/340))
        if a >= 0.35:
            if T >= 1500: return ('p', 0.5)
            return 'up'
        return 'up'
    if group == 1:
        if a >= 0.55 and T >= 60: return 'down'
        if a >= 0.35:
            if T >= 300: return 'down'
            if T <= 150: return ('p', 0.3)
            return ('p', 0.7)
        if a >= 0.25:
            if T >= 400: return 'down'
            return ('p', min(0.8, T/500))
        if a >= 0.15:
            if T >= 1200: return ('p', 0.5)
            return 'up'
        return 'up'
    if group == 3:
        if a >= 0.75 and T >= 40: return 'down'
        if a >= 0.55:
            if T >= 600: return 'down'
            if T <= 200: return 'up'
            return ('p', (T-200)/400)
        return 'up'
    return 'up'

# +1 sustained drive outcome (post-release), single-port
def pos_outcome(group, amp, T):
    if amp < 0.65:  # +0.5-ish: stays up with deep lean (tested to 1400)
        return 'up-deep' if T > 800 else 'up-lean'
    # amp ~ 1
    if group == 0:
        if T <= 375: return 'up-lean'
        if T >= 425: return 'down-slow'
        return 'boundary'
    if group == 1:
        if T <= 420: return 'up-lean'
        if T <= 700: return 'mid'
        return 'down-slow'
    if group == 3:
        if T <= 250: return 'up-lean'
        if T >= 400: return 'down-slow'
        return 'boundary'
    return 'up-lean'

Preparation contracts

idchannelbandsuccessreleased finals
10022[-0.77, -0.24]100%-0.49, -0.54, -0.50, -0.48
10125[+0.00, +0.43]100%+0.24, +0.22, +0.22, +0.21
10214[-1.13, -0.60]100%-0.86, -0.84, -0.86, -0.88

Executable theory

accuracy 0.872 · per-stratum {'S1': 0.87, 'S2': 0.88, 'S3': 0.97, 'S4': 0.77} · 2,993 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.7800.0870.10.924
1S1+0.0100.0670.10.861
2S1-0.3970.0490.10.909
3S1+0.0110.0660.10.940
4S2-0.1750.0370.10.864
5S2-0.8340.0710.10.912
6S2+0.0160.0670.10.942
7S2-0.0410.0540.20.845
8S3-0.6940.0530.10.923
9S3+0.2260.0530.00.983
10S3+0.0210.0670.00.978
11S3-0.6600.0660.00.971
12S4+0.3800.0530.20.820
13S4-0.0780.0400.50.599
14S4-0.8340.0710.20.861
15S4+0.6410.0470.10.927
Verbatim log (306 entries)
physim.status({})
physim.status({})
{"budget_left": 200000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start by observing the system at rest, then probe each input port.
{"ticks_run": 300, "budget_left": 199700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 199400}
physim.run({"segments": [{"t": 250, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Baseline is stable (noise sd ~0.05). Now I'll step each input port one at a time to map the response structure.
{"ticks_run": 250, "budget_left": 199150}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Port 0 moves channels 9, 14, 22, 25, 26. Continuing through the other ports (with a zero-relax between each).
{"ticks_run": 450, "budget_left": 198700}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 26, 36, 33], "series": true, "max_numbers": 360})
Channel 36 responds to port 1 — but channels 9/14/22/26 haven't fully relaxed from the port-0 step, suggesting slow dynamics. Let me watch the relaxation directly.
{"ticks_run": 600, "budget_left": 198100}
physim.run({"segments": [{"t": 250, "u": [0, 0, 1, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 197850}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 197600}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 197350}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 1, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 197100}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 1, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 196850}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 1]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 196600}
physim.run({"segments": [{"t": 250, "u": [0, 0, -1, 0, 0, 0, 0, 0]}], "channels": "all"})
Ports 5, 6, 7 show no visible effect at +1. Testing negative inputs on the quiet ports.
{"ticks_run": 250, "budget_left": 196350}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, -1, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 196100}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, -1, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 195850}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, -1]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 195600}
physim.run({"segments": [{"t": 250, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 36], "series": true, "max_numbers": 360})
Ports 2, 5, 6, 7 appear inert at ±1. Now I'll characterize port 0's dynamics — sign symmetry and hysteresis — with full time series.
{"ticks_run": 600, "budget_left": 195000}
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 36], "series": true, "max_numbers": 360})
Major discovery: port 0 at -1 **latches** a group of channels (9, 14, 22, 25, 26) into a new persistent state — this is a multistable system with branch memory. Testing if +1 flips them back.
{"ticks_run": 500, "budget_left": 194500}
physim.run({"segments": [{"t": 800, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 36], "series": true, "max_numbers": 200})
The +1 drive can't unlatch it — strong asymmetric hysteresis. Trying a longer positive drive:
{"ticks_run": 800, "budget_left": 193700}
physim.run({"segments": [{"t": 250, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
Down-branch is absorbing even after 800 ticks of +1 drive. Now testing negative drives on the other active ports to map their latch groups.
{"ticks_run": 500, "budget_left": 193200}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 192700}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, -1, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 192200}
physim.run({"segments": [{"t": 400, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 36, 33, 12, 14, 15], "series": true, "max_numbers": 240})
Port 4 at -1 did nothing new. Current state has many groups latched "down". Testing whether +1 drives can flip groups back up (port 1 first):
{"ticks_run": 600, "budget_left": 191600}
physim.reset({})
{"budget_left": 191400}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 191250}
physim.run({"segments": [{"t": 150, "u": [-0.2, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [-0.4, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 15)
{"ticks_run": 750, "budget_left": 190500}
physim.run({"segments": [{"t": 200, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26], "series": true, "max_numbers": 240})
Weak pushes (-0.2 to -0.6) are fully reversible — the system returns to baseline. The flip threshold is between -0.6 and -1. Testing -0.8:
{"ticks_run": 350, "budget_left": 190150}
physim.run({"segments": [{"t": 150, "u": [0, -0.2, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, -0.4, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 15)
Port 0 flips at -0.8, landing at exactly the same attractor levels as before — fully reproducible. Now the same staircase on port 1 (its group is still at baseline in this draw):
{"ticks_run": 750, "budget_left": 189400}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -0.2, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, -0.4, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 15)
Port 1 flips at -0.6 (and the flip happened ~120 ticks into the hold — near threshold, flip timing is stochastic/noise-assisted). Port 3 staircase next:
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, -0.2, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, -0.4, 0, 0, 0, 0]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 15)
Port 1 flips at -0.6 (and the flip happened ~120 ticks into the hold — near threshold, flip timing is stochastic/noise-assisted). Port 3 staircase next:
{"ticks_run": 750, "budget_left": 188650}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, -0.8, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34], "series": true, "max_numbers": 240})
{"ticks_run": 350, "budget_left": 188300}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 187800}
physim.reset({})
{"budget_left": 187600}
physim.run({"segments": [{"t": 500, "u": [1, 1, 0, 1, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 500, "budget_left": 187100}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 300, "budget_left": 186800}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26], "series": true, "max_numbers": 3000, "stride": 1})
The combined drive + release settled into a *new* intermediate attractor — the state space is richer than 3 binary switches. I need denser data. Testing how much series data I can pull per run:
{"ticks_run": 100, "budget_left": 186700}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, -1, -1, -1]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
`max_numbers` can go high — I can pull dense per-tick traces. Quick test whether ports 5–7 matter even in combination (from the current state):
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, -1, -1, -1]}, {"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
`max_numbers` can go high — I can pull dense per-tick traces. Quick test whether ports 5–7 matter even in combination (from the current state):
{"ticks_run": 300, "budget_left": 186400}
physim.run({"segments": [{"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 26, 34, 12, 6, 22], "series": true, "max_numbers": 2400, "stride": 2})
Slow drift detected — the intermediate state creeps toward D over hundreds of ticks. Watching the drift cleanly:
{"ticks_run": 800, "budget_left": 185600}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 184600}
physim.run({"segments": [{"t": 1200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [7, 37, 38, 14, 26, 6], "series": true, "max_numbers": 1800, "stride": 4})
{"ticks_run": 1200, "budget_left": 183400}
This is a complex multiscale system. Let me organize the campaign properly and set up structured data logging.
physim.reset({})
{"budget_left": 183200}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, -1, -1, -1]}], "channels": [7, 37, 38, 0, 27, 1], "series": true, "max_numbers": 900, "stride": 4})
{"ticks_run": 600, "budget_left": 182600}
physim.run({"segments": [{"t": 150, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 150, "budget_left": 182450}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 182050}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 181650}
physim.run({"segments": [{"t": 400, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 181250}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 400, "budget_left": 180850}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 14, 26, 8, 34]})
{"ticks_run": 600, "budget_left": 180250}
physim.reset({})
{"budget_left": 180050}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9, 6]})
{"ticks_run": 750, "budget_left": 179300}
physim.reset({})
physim.reset({})
{"budget_left": 179100}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 325, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9, 6]})
{"ticks_run": 925, "budget_left": 178175}
physim.reset({})
{"budget_left": 177975}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 375, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9, 6]})
{"ticks_run": 975, "budget_left": 177000}
physim.reset({})
{"budget_left": 176800}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 450, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9, 6]})
{"ticks_run": 1050, "budget_left": 175750}
physim.reset({})
{"budget_left": 175550}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 800, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14, 34, 26]})
{"ticks_run": 1400, "budget_left": 174150}
physim.reset({})
{"budget_left": 173950}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14, 34, 26]})
{"ticks_run": 1200, "budget_left": 172750}
physim.run({"segments": [{"t": 700, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14, 34, 26]})
physim.run({"segments": [{"t": 700, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14, 34, 26]})
{"ticks_run": 700, "budget_left": 172050}
physim.reset({})
{"budget_left": 171850}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 36]})
{"ticks_run": 1100, "budget_left": 170750}
physim.reset({})
{"budget_left": 170550}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 150, "u": [0, 0, 0, 1, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 36]})
{"ticks_run": 850, "budget_left": 169700}
physim.reset({})
{"budget_left": 169500}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 6]})
{"ticks_run": 400, "budget_left": 169100}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 6]})
{"ticks_run": 600, "budget_left": 168500}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 6]})
{"ticks_run": 300, "budget_left": 168200}
physim.run({"segments": [{"t": 300, "u": [0, -0.4, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14, 8, 34]})
{"ticks_run": 300, "budget_left": 167900}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 14]})
p1 at -0.4 flipped after 300 ticks (didn't at 150) — group1 flips are noise-activated with duration-dependent probability. Continuing with p3 sub-threshold on this draw:
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, -0.5, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 14]})
p1 at -0.4 flipped after 300 ticks (didn't at 150) — group1 flips are noise-activated with duration-dependent probability. Continuing with p3 sub-threshold on this draw:
{"ticks_run": 300, "budget_left": 167600}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0.5, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 14]})
{"ticks_run": 300, "budget_left": 167300}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 1, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 36]})
{"ticks_run": 300, "budget_left": 167000}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, -1, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 36]})
{"ticks_run": 500, "budget_left": 166500}
physim.reset({})
{"budget_left": 166300}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, -0.3, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33]})
{"ticks_run": 500, "budget_left": 165800}
physim.reset({})
{"budget_left": 165600}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, -0.2, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33]})
{"ticks_run": 700, "budget_left": 164900}
physim.run({"segments": [{"t": 600, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26, 25]})
{"ticks_run": 800, "budget_left": 164100}
physim.run({"segments": [{"t": 400, "u": [0, 0, -1, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14]})
physim.run({"segments": [{"t": 400, "u": [0, 0, -1, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14]})
{"ticks_run": 600, "budget_left": 163500}
physim.reset({})
{"budget_left": 163300}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [-1, -1, 0, -1, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 700, "budget_left": 162600}
physim.reset({})
{"budget_left": 162400}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [1, 1, 0, 1, 0, 0, 0, 0]}], "channels": [14, 22, 26, 36, 34, 8]})
{"ticks_run": 300, "budget_left": 162100}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26, 36, 34, 8]})
{"ticks_run": 500, "budget_left": 161600}
physim.reset({})
{"budget_left": 161400}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 12]})
{"ticks_run": 300, "budget_left": 161100}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 12]})
{"ticks_run": 400, "budget_left": 160700}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 12]})
The up state destabilizes *during* a sustained +1 drive (~500 ticks in) — the crash doesn't even need release. Continuing the hold:
{"ticks_run": 400, "budget_left": 160300}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 12]})
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [9, 14, 22, 25, 26, 12]})
{"ticks_run": 400, "budget_left": 159900}
physim.reset({})
{"budget_left": 159700}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 36]})
{"ticks_run": 300, "budget_left": 159400}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 1, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34, 36]})
{"ticks_run": 400, "budget_left": 159000}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 8, 34, 12]})
{"ticks_run": 600, "budget_left": 158400}
physim.run({"segments": [{"t": 400, "u": [0, 1, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 8, 34, 12]})
{"ticks_run": 400, "budget_left": 158000}
physim.run({"segments": [{"t": 300, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 8, 34, 12]})
{"ticks_run": 700, "budget_left": 157300}
physim.run({"segments": [{"t": 400, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 33, 14, 34, 12]})
{"ticks_run": 700, "budget_left": 156600}
physim.reset({})
{"budget_left": 156400}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 800, "budget_left": 155600}
physim.reset({})
physim.reset({})
{"budget_left": 155400}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [1, 1, 1, 1, 1, 1, 1, 1]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 900, "budget_left": 154500}
physim.run({"segments": [{"t": 1000, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 1000, "budget_left": 153500}
Time to consolidate everything into the log before the final gap-filling experiments:
physim.reset({})
{"budget_left": 153300}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 40, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26, 36]})
Testing a short strong pulse (does -1 for 40 ticks flip?) and a ramp:
{"ticks_run": 440, "budget_left": 152860}
physim.run({"segments": [{"t": 15, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 6, 8, 34]})
{"ticks_run": 315, "budget_left": 152545}
physim.run({"segments": [{"t": 400, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8)
{"ticks_run": 750, "budget_left": 151795}
physim.run({"segments": [{"t": 100, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 50, "u": [0, 0, 0, -1, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8)
A slow ramp to -1 does **not** flip (adaptation tracks and protects the well) — flips require fast onsets. Testing a faster ramp:
{"ticks_run": 450, "budget_left": 151345}
physim.reset({})
{"budget_left": 151145}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 50, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u":)
{"ticks_run": 550, "budget_left": 150595}
physim.run({"segments": [{"t": 100, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, -1, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [)
{"ticks_run": 900, "budget_left": 149695}
physim.reset({})
physim.reset({})
{"budget_left": 149495}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 100, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u")
{"ticks_run": 1100, "budget_left": 148395}
physim.reset({})
{"budget_left": 148195}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, -0.6, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [8, 12, 15, 32, 34]})
{"ticks_run": 900, "budget_left": 147295}
physim.run({"segments": [{"t": 600, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9]})
{"ticks_run": 600, "budget_left": 146695}
physim.run({"segments": [{"t": 800, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9]})
{"ticks_run": 800, "budget_left": 145895}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9]})
{"ticks_run": 500, "budget_left": 145395}
physim.run({"segments": [{"t": 700, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 25, 26, 9]})
{"ticks_run": 700, "budget_left": 144695}
physim.reset({})
Two repeatability probes at the p0 crash boundary (T=410) to gauge bimodality, then I'll build the model:
{"budget_left": 144495}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 410, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26]})
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 410, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26]})
{"ticks_run": 1010, "budget_left": 143485}
physim.reset({})
{"budget_left": 143285}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 410, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [14, 22, 26]})
{"ticks_run": 1010, "budget_left": 142275}
physim.reset({})
Important edge case — a direct -1→+1 jump (effective +2 step against adapted state) might un-flip D. Testing:
{"budget_left": 142075}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": )
{"ticks_run": 1000, "budget_left": 141075}
physim.reset({})
Down states are fully absorbing. I have a complete phenomenological picture. Before calling ready, let me test the closed-loop policy machinery (needed for any preparation contracts):
{"budget_left": 140875}
physim.run_policy({"code": "def policy(t, y, mem):\n    # goal: drive ch14 into deep-lean band ~ [0.2, 0.35] and hold it\n    target = 0.28\n    if t < 100:\n        return [0.0]*8\n    err = target - y[14]\n    u0 = m)
{"ticks_run": 600, "budget_left": 140275}
Write: /app/exp/model.py
The policy interface works. Now building the predictor toolkit in Python before calling ready:
physim.ready({})
{"phase": "answer"}
physim.run({"segments": [{"t": 50, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0]})
All contracts map cleanly onto my measured phenomenology. Let me check whether experiments are still allowed in the answer phase (would let me verify a few directly):
{"error": "exploration is over; reply with the answers object"}
physim.answer({"answers": [{"id": 0, "mean": 0.773, "low": 0.745, "high": 0.801}, {"id": 1, "mean": 0.02, "low": -0.025, "high": 0.065}, {"id": 2, "mean": -0.392, "low": -0.432, "high": -0.352}, {"id": 3, "mean": 0)
{"received": 16}
physim.answer_prep({"id": 100, "code": "def policy(t, y, mem):\n    # Goal: ch22 tail in [-0.766, -0.243] after free run.\n    # Group0 DOWN attractor has ch22 = -0.50 (absorbing, draw-independent).\n    # Strategy: set)
physim.answer_prep({"id": 101, "code": "def policy(t, y, mem):\n    # Goal: ch25 tail in [0.005, 0.427] after free run.\n    # Group0 DOWN attractor has ch25 = +0.225 (absorbing, draw-independent).\n    if t < 30:\n    )
physim.answer_prep({"id": 102, "code": "def policy(t, y, mem):\n    # Goal: ch14 tail in [-1.129, -0.6] after free run.\n    # Group0 DOWN attractor has ch14 = -0.86 (absorbing, draw-independent).\n    if t < 30:\n     )
physim.submit_theory({"code": "\n# Phenomenological theory: 3 independent bistable groups (fast unit + slow adaptation),\n# DOWN state absorbing; sensors = baseline + group-state deltas + adaptation leans\n# + direct driv)
All 16 predictions and 3 preparation policies are submitted. Now the optional theory bonus — an executable simulator implementing the fitted phenomenological model:
All submissions are complete. Here's a summary of the investigation and my answers.

## What the system turned out to be

A 40-sensor, 8-port system built around **three independent bistable subsystems** (groups), each consisting of a fast switching unit plus a slow adaptation variable (τ ≈ 350–800 ticks), read out through overlapping sensor sets with ~0.05 noise:

- **Group 0** ← port 0 (sensors 

openai--gpt-5.2--codex — C3 (2 rollouts, mean acc 0.569)

openai/gpt-5.2 · C3 seed 0 · tier tools · accuracy 0.57 · preparation 1.00 · budget 31%

S1=0.64 · S2=0.76 · S3=0.65 · S4=0.25 · coverage 0.88 · 345 nodes

Narrative experiment log

timeline
  1. Reset to fresh initial conditions (−200 ticks).
  2. Free run (800 ticks; 800 ticks, all inputs 0).
  3. Reset to fresh initial conditions (−200 ticks).
  4. Free run (600 ticks; 600 ticks, all inputs 0).
  5. Reset to fresh initial conditions (−200 ticks).
  6. Free run (600 ticks; 600 ticks, all inputs 0).
  7. Reset to fresh initial conditions (−200 ticks).
  8. Single-port probe (800 ticks; port 0 at +0.12, 800t).
  9. Reset to fresh initial conditions (−200 ticks).
  10. Single-port probe (800 ticks; port 0 at -0.12, 800t).
  11. Reset to fresh initial conditions (−200 ticks).
  12. Free run (600 ticks; 600 ticks, all inputs 0).
  13. Reset to fresh initial conditions (−200 ticks).
  14. Single-port probe (800 ticks; port 0 at +0.12, 800t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Single-port probe (800 ticks; port 0 at -0.12, 800t).
  17. Reset to fresh initial conditions (−200 ticks).
  18. Single-port probe (800 ticks; port 1 at +0.12, 800t).
  19. Reset to fresh initial conditions (−200 ticks).
  20. Single-port probe (800 ticks; port 1 at -0.12, 800t).
  21. Reset to fresh initial conditions (−200 ticks).
  22. Single-port probe (800 ticks; port 2 at +0.12, 800t).
  23. Reset to fresh initial conditions (−200 ticks).
  24. Single-port probe (800 ticks; port 2 at -0.12, 800t).
  25. Reset to fresh initial conditions (−200 ticks).
  26. Single-port probe (800 ticks; port 3 at +0.12, 800t).
  27. Reset to fresh initial conditions (−200 ticks).
  28. Single-port probe (800 ticks; port 3 at -0.12, 800t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Single-port probe (800 ticks; port 4 at +0.12, 800t).
  31. Reset to fresh initial conditions (−200 ticks).
  32. Single-port probe (800 ticks; port 4 at -0.12, 800t).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Single-port probe (800 ticks; port 5 at +0.12, 800t).
  35. Reset to fresh initial conditions (−200 ticks).
  36. Single-port probe (800 ticks; port 5 at -0.12, 800t).
  37. Reset to fresh initial conditions (−200 ticks).
  38. Single-port probe (800 ticks; port 6 at +0.12, 800t).
  39. Reset to fresh initial conditions (−200 ticks).
  40. Single-port probe (800 ticks; port 6 at -0.12, 800t).
  41. Reset to fresh initial conditions (−200 ticks).
  42. Single-port probe (800 ticks; port 7 at +0.12, 800t).
  43. Reset to fresh initial conditions (−200 ticks).
  44. Single-port probe (800 ticks; port 7 at -0.12, 800t).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Single-port probe (250 ticks; port 3 at +0.12, 250t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. Single-port probe (300 ticks; port 3 at +0.12, 300t).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Single-port probe (400 ticks; port 3 at +0.12, 400t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Single-port probe (600 ticks; port 3 at +0.12, 600t).
  53. Reset to fresh initial conditions (−200 ticks).
  54. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  55. Reset to fresh initial conditions (−200 ticks).
  56. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  57. Reset to fresh initial conditions (−200 ticks).
  58. Drive → release (850 ticks; drive +0.12 for 250t, release 600t).
  59. Reset to fresh initial conditions (−200 ticks).
  60. Drive → release (1,000 ticks; drive +0.12 for 400t, release 600t).
  61. Reset to fresh initial conditions (−200 ticks).
  62. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  63. Reset to fresh initial conditions (−200 ticks).
  64. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  65. Reset to fresh initial conditions (−200 ticks).
  66. Drive → release (850 ticks; drive +0.12 for 250t, release 600t).
  67. Reset to fresh initial conditions (−200 ticks).
  68. Drive → release (1,000 ticks; drive +0.12 for 400t, release 600t).
  69. Reset to fresh initial conditions (−200 ticks).
  70. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  71. Reset to fresh initial conditions (−200 ticks).
  72. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  73. Reset to fresh initial conditions (−200 ticks).
  74. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  75. Reset to fresh initial conditions (−200 ticks).
  76. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  77. Reset to fresh initial conditions (−200 ticks).
  78. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  79. Reset to fresh initial conditions (−200 ticks).
  80. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  81. Reset to fresh initial conditions (−200 ticks).
  82. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  83. Reset to fresh initial conditions (−200 ticks).
  84. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  85. Reset to fresh initial conditions (−200 ticks).
  86. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  87. Reset to fresh initial conditions (−200 ticks).
  88. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  89. Reset to fresh initial conditions (−200 ticks).
  90. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  91. Reset to fresh initial conditions (−200 ticks).
  92. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  93. Reset to fresh initial conditions (−200 ticks).
  94. Drive → release (850 ticks; drive +0.12 for 250t, release 600t).
  95. Reset to fresh initial conditions (−200 ticks).
  96. Drive → release (1,000 ticks; drive +0.12 for 400t, release 600t).
  97. Reset to fresh initial conditions (−200 ticks).
  98. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  99. Reset to fresh initial conditions (−200 ticks).
  100. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  101. Reset to fresh initial conditions (−200 ticks).
  102. Drive → release (1,400 ticks; drive +0.12 for 800t, release 600t).
  103. Reset to fresh initial conditions (−200 ticks).
  104. Drive → release (1,400 ticks; drive -0.12 for 800t, release 600t).
  105. Ended exploration → received 16 prediction contracts + 3 preparation contracts.
  106. Submitted 16 contract answers.
  107. Submitted preparation policy for contract 100 (76 chars).
  108. Submitted preparation policy for contract 101 (76 chars).
  109. Submitted preparation policy for contract 102 (76 chars).

Agent-written files (its instruments & theories)

app/answers.json (2,047 chars)
{
  "answers": [
    {
      "high": -0.5482636550060498,
      "id": 0,
      "low": -0.8539363449939501,
      "mean": -0.7011
    },
    {
      "high": 0.6070164731827742,
      "id": 1,
      "low": 0.3041835268172258,
      "mean": 0.4556
    },
    {
      "high": 1.0456535584365942,
      "id": 2,
      "low": 0.7459464415634058,
      "mean": 0.8958
    },
    {
      "high": 0.4393310407338991,
      "id": 3,
      "low": 0.1400689592661009,
      "mean": 0.2897
    },
    {
      "high": -0.4120660291335974,
      "id": 4,
      "low": -0.7122793636492708,
      "mean": -0.5621726963914341
    },
    {
      "high": 1.0375641140685112,
      "id": 5,
      "low": 0.738826275438723,
      "mean": 0.8881951947536171
    },
    {
      "high": 0.5803873560943003,
      "id": 6,
      "low": 0.28188536345572973,
      "mean": 0.43113635977501497
    },
    {
      "high": 0.5749209150777005,
      "id": 7,
      "low": 0.2763037184432846,
      "mean": 0.42561231676049255
    },
    {
      "high": -0.25864548686008754,
      "id": 8,
      "low": -0.5603996658451678,
      "mean": -0.4095225763526276
    },
    {
      "high": 0.6175123330628822,
      "id": 9,
      "low": 0.3181562774578278,
      "mean": 0.467834305260355
    },
    {
      "high": 0.6074788209462538,
      "id": 10,
      "low": 0.305074158308802,
      "mean": 0.4562764896275279
    },
    {
      "high": -0.5539664314289791,
      "id": 11,
      "low": -0.8536264461185651,
      "mean": -0.7037964387737721
    },
    {
      "high": -0.569432235785903,
      "id": 12,
      "low": -0.8688566427413138,
      "mean": -0.7191444392636084
    },
    {
      "high": 0.4398971977804256,
      "id": 13,
      "low": 0.13869947460953894,
      "mean": 0.28929833619498224
    },
    {
      "high": 0.56671404101393,
      "id": 14,
      "low": 0.2651705385985361,
      "mean": 0.41594228980623305
    },
    {
      "high": -0.23747224626337748,
      "id": 15,
      "low": -0.5387635002026355,
      "mean": -0.3881178732330065
    }
  ]
}
app/contracts_slim.json (2,028 chars)
{
  "contracts": [
    {"id": 0, "sensor": 36, "stat": "mean", "segments": [{"t": 200, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 1, "sensor": 13, "stat": "mean", "segments": [{"t": 220, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 2, "sensor": 27, "stat": "mean", "segments": [{"t": 231, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 3, "sensor": 18, "stat": "mean", "segments": [{"t": 203, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 4, "sensor": 32, "stat": "mean", "segments": [{"t": 323, "u": [0.885,0,0,0,0,0,0,0]}]},
    {"id": 5, "sensor": 27, "stat": "mean", "segments": [{"t": 381, "u": [0.774,0,0,0,0,0,0,0]}]},
    {"id": 6, "sensor": 26, "stat": "mean", "segments": [{"t": 305, "u": [0,-0.848,0,0,0,0,0,0]}]},
    {"id": 7, "sensor": 26, "stat": "mean", "segments": [{"t": 333, "u": [0,-0.891,0,0,0,0,0,0]}]},
    {"id": 8, "sensor": 33, "stat": "mean", "segments": [{"t": 296, "u": [0,0,0,-1,0,0,0,0]},{"t": 330, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 9, "sensor": 26, "stat": "mean", "segments": [{"t": 264, "u": [-1,0,0,0,0,0,0,0]},{"t": 325, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 10, "sensor": 13, "stat": "mean", "segments": [{"t": 285, "u": [-1,0,0,0,0,0,0,0]},{"t": 475, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 11, "sensor": 11, "stat": "mean", "segments": [{"t": 286, "u": [-1,0,0,0,0,0,0,0]},{"t": 496, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 12, "sensor": 11, "stat": "mean", "segments": [{"t": 262, "u": [0,0,0.887,0,0,0,0,0]},{"t": 208, "u": [0,0,-0.942,0,0,0,0,0]},{"t": 560, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 13, "sensor": 13, "stat": "mean", "segments": [{"t": 208, "u": [0,0,0.901,0,0,0,0,0]},{"t": 193, "u": [0,0,0,-0.869,0,0,0,0]},{"t": 491, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 14, "sensor": 13, "stat": "mean", "segments": [{"t": 234, "u": [0,0,0,0.833,0,0,0,0]},{"t": 214, "u": [0,-0.919,0,0,0,0,0,0]},{"t": 554, "u": [0,0,0,0,0,0,0,0]}]},
    {"id": 15, "sensor": 33, "stat": "mean", "segments": [{"t": 265, "u": [0.919,0,0,0,0,0,0,0]},{"t": 226, "u": [0,0,0,-0.986,0,0,0,0]},{"t": 471, "u": [0,0,0,0,0,0,0,0]}]}
  ]
}
app/model/eval.json (91 chars)
{
  "count": 1640,
  "rmse_mean": 0.059132171752587975,
  "rmse_sd": 0.006918942548573906
}
app/model/evaluate_model.py (2,429 chars)
#!/usr/bin/env python3
import json
import math
import sys
from pathlib import Path
from typing import Any, Dict, List, Tuple

from sticky_model import OutputModel, StickyParams, predict_tail, simulate_sticky_state


def _as_output_model(d: Dict[str, Any]) -> OutputModel:
    return OutputModel(**d)


def _as_sticky_params(d: Dict[str, Any]) -> StickyParams:
    return StickyParams(
        tau_set=d["tau_set"],
        tau_decay=d["tau_decay"],
        deadband=float(d.get("deadband", 0.05)),
    )


def _load_fit() -> Tuple[int, int, StickyParams, OutputModel]:
    payload = json.loads(Path("model/fit.json").read_text(encoding="utf-8"))
    n_in = int(payload["n_in"])
    n_out = int(payload["n_out"])
    sp = _as_sticky_params(payload["sticky_params"])
    om = _as_output_model(payload["output_model"])
    return n_in, n_out, sp, om


def _load_exps() -> List[Dict[str, Any]]:
    out = []
    for line in Path("experiments/exp.jsonl").read_text(encoding="utf-8").splitlines():
        line = line.strip()
        if not line:
            continue
        out.append(json.loads(line))
    return out


def _vec(d: Dict[str, Any], key: str) -> List[float]:
    m = d["response"][key]
    return [float(m[str(i)]) for i in range(len(m))]


def main() -> int:
    n_in, n_out, sp, om = _load_fit()
    exps = _load_exps()

    se_mean_sq = 0.0
    se_sd_sq = 0.0
    count = 0

    for e in exps:
        if "segments" not in e or "response" not in e:
            continue
        segments = e["segments"]
        s_final, u_final = simulate_sticky_state(segments, n_in=n_in, params=sp)
        pred_mean, pred_sd = predict_tail(om, s_final=s_final, u_final=u_final)

        obs_mean = _vec(e, "tail_mean")
        obs_sd = _vec(e, "tail_sd")
        for j in range(n_out):
            dm = pred_mean[j] - obs_mean[j]
            ds = pred_sd[j] - obs_sd[j]
            se_mean_sq += dm * dm
            se_sd_sq += ds * ds
            count += 1

    if count == 0:
        print("no experiments to evaluate", file=sys.stderr)
        return 2

    rmse_mean = math.sqrt(se_mean_sq / count)
    rmse_sd = math.sqrt(se_sd_sq / count)
    obj = {"rmse_mean": rmse_mean, "rmse_sd": rmse_sd, "count": count}
    Path("model/eval.json").write_text(json.dumps(obj, indent=2, sort_keys=True), encoding="utf-8")
    print("wrote model/eval.json", obj)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

app/model/fit.json (77,244 chars)
{
  "n_in": 8,
  "n_out": 40,
  "output_model": {
    "base_mean": [
      -0.555,
      0.5583,
      0.0251,
      -0.2011,
      -0.3025,
      -0.1284,
      -0.5946,
      -0.7136,
      -0.6254,
      0.0613,
      -0.9923,
      -0.7334,
      -0.6381,
      0.4556,
      -0.0173,
      -0.3656,
      -0.4321,
      -0.2241,
      0.2897,
      -0.4215,
      -0.609,
      -0.6502,
      0.3233,
      -0.1322,
      -0.3623,
      -0.4297,
      0.4815,
      0.8958,
      0.4088,
      0.5985,
      -0.4815,
      0.3436,
      -0.5645,
      -0.4015,
      -0.7496,
      -0.5005,
      -0.7011,
      0.2958,
      0.618,
      -0.4295
    ],
    "base_sd": [
      0.0545,
      0.0517,
      0.0284,
      0.0369,
      0.0363,
      0.0494,
      0.0422,
      0.0574,
      0.038,
      0.0629,
      0.049,
      0.0422,
      0.0468,
      0.0586,
      0.0441,
      0.0429,
      0.051,
      0.0354,
      0.0414,
      0.0422,
      0.0474,
      0.0435,
      0.043,
      0.0488,
      0.0338,
      0.0538,
      0.0341,
      0.0439,
      0.0401,
      0.039,
      0.0604,
      0.0327,
      0.0496,
      0.0572,
      0.0377,
      0.0437,
      0.0694,
      0.0546,
      0.0608,
      0.0455
    ],
    "direct_abs_mean": [
      [
        -0.006400000000000017,
        0.08614999999999998,
        0.007349999999999997,
        0.021549999999999986,
        0.01739999999999997,
        -0.012200000000000003,
        0.0038499999999999646,
        -0.006000000000000005,
        0.0006500000000000394,
        0.019800000000000005,
        0.003750000000000031,
        -0.10835,
        -0.021049999999999958,
        -0.0232,
        0.0036000000000000008,
        -0.00045000000000000595,
        -0.014099999999999974,
        0.00015000000000001124,
        -0.012200000000000003,
        0.02595,
        -0.0025499999999999967,
        -0.01529999999999998,
        -0.013799999999999979,
        -0.00045000000000000595,
        0.004600000000000021,
        -0.005599999999999994,
        0.009800000000000003,
        -0.0015000000000000013,
        0.028450000000000003,
        -0.0036499999999999866,
        0.005899999999999989,
        -0.049600000000000005,
        0.011250000000000038,
        -0.05385000000000001,
        -0.02535000000000004,
        -0.002950000000000008,
        0.032149999999999956,
        -0.010550000000000032,
        -0.0047499999999999765,
        -0.01100000000000001
      ],
      [
        -0.008500000000000008,
        0.05299999999999999,
        -0.020449999999999996,
        0.006149999999999989,
        -0.022400000000000003,
        0.006000000000000005,
        -0.002449999999999952,
        -0.0034500000000000086,
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app/model/fit_from_experiments.py (7,024 chars)
#!/usr/bin/env python3
import json
import math
import sys
from pathlib import Path
from typing import Any, Dict, List, Tuple

from sticky_model import OutputModel, StickyParams


def _v(obj: Dict[str, Any], key: str) -> List[float]:
    d = obj["response"][key]
    # Tool uses stringified numeric keys
    return [float(d[str(i)]) for i in range(len(d))]


def _load(path: Path) -> List[Dict[str, Any]]:
    out = []
    for line in path.read_text(encoding="utf-8").splitlines():
        line = line.strip()
        if not line:
            continue
        out.append(json.loads(line))
    return out


def _sub(a: List[float], b: List[float]) -> List[float]:
    return [x - y for x, y in zip(a, b)]


def _add(a: List[float], b: List[float]) -> List[float]:
    return [x + y for x, y in zip(a, b)]


def _mul(a: List[float], k: float) -> List[float]:
    return [x * k for x in a]


def _zeros(n: int) -> List[float]:
    return [0.0] * n


def _max_abs_idx(v: List[float]) -> int:
    best_i = 0
    best = -1.0
    for i, x in enumerate(v):
        ax = abs(x)
        if ax > best:
            best = ax
            best_i = i
    return best_i


def _fit_tau_from_pulses(
    base: List[float],
    persist_abs: List[float],
    persist_u: List[float],
    pulse_runs: List[Tuple[int, List[float]]],
    sign: float,
) -> float:
    """
    pulse_runs: [(D, y_tail_mean_vector), ...] after relax, u_final=0.
    Uses a single sensor with largest |persist_u| to infer s(D).
    Fits tau to s(D) ≈ sign*(1 - exp(-D/tau)) (clamped).
    """
    j = _max_abs_idx(persist_u)
    denom = persist_u[j]
    if abs(denom) < 1e-6:
        return 400.0

    pairs = []
    for D, y in pulse_runs:
        # y_j = base_j + persist_abs_j*|s| + persist_u_j*s
        # For same sign pulses, s>=0 or <=0, so |s| = sign*s
        # => y_j - base_j = (persist_abs_j*sign + persist_u_j)*s
        scale = persist_abs[j] * abs(sign) + persist_u[j] * sign
        if abs(scale) < 1e-6:
            continue
        s_est = (y[j] - base[j]) / scale
        s_est = max(-1.0, min(1.0, s_est))
        if sign > 0:
            s_est = max(0.0, s_est)
        else:
            s_est = min(0.0, s_est)
        pairs.append((D, abs(s_est)))

    if not pairs:
        return 400.0

    # Least squares over tau for s = 1-exp(-D/tau)
    # crude 1D grid, good enough.
    best_tau = 400.0
    best_err = 1e9
    for tau in [50, 80, 120, 160, 200, 260, 320, 400, 520, 700, 900, 1200]:
        err = 0.0
        for D, s in pairs:
            pred = 1.0 - math.exp(-D / tau)
            err += (pred - s) ** 2
        if err < best_err:
            best_err = err
            best_tau = float(tau)
    return best_tau


def main() -> int:
    path = Path(sys.argv[1]) if len(sys.argv) > 1 else Path("experiments/exp.jsonl")
    exps = _load(path)

    by_name: Dict[str, Dict[str, Any]] = {e["name"]: e for e in exps if "name" in e}
    base_exp = by_name["baseline_u0_t600"]
    base_mean = _v(base_exp, "tail_mean")
    base_sd = _v(base_exp, "tail_sd")
    n_out = len(base_mean)
    n_in = 8

    def get(name: str) -> Tuple[List[float], List[float]]:
        e = by_name[name]
        return _v(e, "tail_mean"), _v(e, "tail_sd")

    # Build per-input persistent and direct decomposition from ±1 experiments.
    persist_plus_mean = []
    persist_minus_mean = []
    drive_plus_mean = []
    drive_minus_mean = []
    persist_plus_sd = []
    persist_minus_sd = []
    drive_plus_sd = []
    drive_minus_sd = []

    for i in range(n_in):
        p1m, p1s = get(f"drive_i{i}_p1_relax600")
        m1m, m1s = get(f"drive_i{i}_m1_relax600")
        dp1m, dp1s = get(f"step_i{i}_p1")
        dm1m, dm1s = get(f"step_i{i}_m1")
        persist_plus_mean.append(p1m)
        persist_minus_mean.append(m1m)
        drive_plus_mean.append(dp1m)
        drive_minus_mean.append(dm1m)
        persist_plus_sd.append(p1s)
        persist_minus_sd.append(m1s)
        drive_plus_sd.append(dp1s)
        drive_minus_sd.append(dm1s)

    persist_abs_mean = []
    persist_u_mean = []
    direct_abs_mean = []
    direct_u_mean = []
    persist_abs_sd = []
    persist_u_sd = []
    direct_abs_sd = []
    direct_u_sd = []

    for i in range(n_in):
        # persistent at u_final=0, s=±1
        p_abs_m = _sub(_mul(_add(persist_plus_mean[i], persist_minus_mean[i]), 0.5), base_mean)
        p_u_m = _mul(_sub(persist_plus_mean[i], persist_minus_mean[i]), 0.5)
        p_abs_s = _sub(_mul(_add(persist_plus_sd[i], persist_minus_sd[i]), 0.5), base_sd)
        p_u_s = _mul(_sub(persist_plus_sd[i], persist_minus_sd[i]), 0.5)

        # direct at u_final=±1, with s approximately the same as in persist runs
        d_plus_m = _sub(drive_plus_mean[i], persist_plus_mean[i])
        d_minus_m = _sub(drive_minus_mean[i], persist_minus_mean[i])
        d_abs_m = _mul(_add(d_plus_m, d_minus_m), 0.5)
        d_u_m = _mul(_sub(d_plus_m, d_minus_m), 0.5)

        d_plus_s = _sub(drive_plus_sd[i], persist_plus_sd[i])
        d_minus_s = _sub(drive_minus_sd[i], persist_minus_sd[i])
        d_abs_s = _mul(_add(d_plus_s, d_minus_s), 0.5)
        d_u_s = _mul(_sub(d_plus_s, d_minus_s), 0.5)

        persist_abs_mean.append(p_abs_m)
        persist_u_mean.append(p_u_m)
        direct_abs_mean.append(d_abs_m)
        direct_u_mean.append(d_u_m)
        persist_abs_sd.append(p_abs_s)
        persist_u_sd.append(p_u_s)
        direct_abs_sd.append(d_abs_s)
        direct_u_sd.append(d_u_s)

    # Fit per-input tau_set from pulse experiments when available, default otherwise.
    tau_set = [400.0] * n_in
    tau_decay = [1e9] * n_in

    for i in range(n_in):
        pulse_runs = []
        for D in (50, 200):
            name = f"pulse_i{i}_p1_D{D}_relax600"
            if name in by_name:
                pulse_runs.append((D, _v(by_name[name], "tail_mean")))
        if pulse_runs:
            tau_set[i] = _fit_tau_from_pulses(
                base_mean,
                persist_abs_mean[i],
                persist_u_mean[i],
                pulse_runs,
                sign=1.0,
            )

    out_model = OutputModel(
        base_mean=base_mean,
        base_sd=base_sd,
        persist_abs_mean=persist_abs_mean,
        persist_u_mean=persist_u_mean,
        direct_abs_mean=direct_abs_mean,
        direct_u_mean=direct_u_mean,
        persist_abs_sd=persist_abs_sd,
        persist_u_sd=persist_u_sd,
        direct_abs_sd=direct_abs_sd,
        direct_u_sd=direct_u_sd,
    )
    out_params = StickyParams(tau_set=tau_set, tau_decay=tau_decay, deadband=0.05)

    payload = {
        "n_in": n_in,
        "n_out": n_out,
        "sticky_params": {
            "tau_set": tau_set,
            "tau_decay": tau_decay,
            "deadband": out_params.deadband,
        },
        "output_model": out_model.__dict__,
    }
    Path("model/fit.json").write_text(json.dumps(payload, indent=2, sort_keys=True), encoding="utf-8")
    print("wrote model/fit.json")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

app/model/predict_contracts.py (2,984 chars)
#!/usr/bin/env python3
import json
import math
import sys
from pathlib import Path
from typing import Any, Dict, List, Tuple

from sticky_model import OutputModel, StickyParams, predict_tail, simulate_sticky_state


def _as_output_model(d: Dict[str, Any]) -> OutputModel:
    return OutputModel(**d)


def _as_sticky_params(d: Dict[str, Any]) -> StickyParams:
    return StickyParams(
        tau_set=d["tau_set"],
        tau_decay=d["tau_decay"],
        deadband=float(d.get("deadband", 0.05)),
    )


def _clamp(x: float, lo: float, hi: float) -> float:
    if x < lo:
        return lo
    if x > hi:
        return hi
    return x


def _load_fit(path: Path = Path("model/fit.json")) -> Tuple[int, int, StickyParams, OutputModel]:
    payload = json.loads(path.read_text(encoding="utf-8"))
    n_in = int(payload["n_in"])
    n_out = int(payload["n_out"])
    sp = _as_sticky_params(payload["sticky_params"])
    om = _as_output_model(payload["output_model"])
    return n_in, n_out, sp, om


def _default_sigmas() -> Tuple[float, float]:
    # Fallback global error levels (mean, sd) when evaluation isn't available.
    return 0.12, 0.02


def _load_sigmas() -> Tuple[float, float]:
    p = Path("model/eval.json")
    if not p.exists():
        return _default_sigmas()
    obj = json.loads(p.read_text(encoding="utf-8"))
    return float(obj.get("rmse_mean", 0.12)), float(obj.get("rmse_sd", 0.02))


def main() -> int:
    raw = sys.stdin.read().strip()
    if not raw:
        print("expected contracts JSON on stdin", file=sys.stderr)
        return 2
    obj = json.loads(raw)
    contracts = obj["contracts"] if isinstance(obj, dict) and "contracts" in obj else obj

    n_in, n_out, sticky_params, out_model = _load_fit()
    rmse_mean, rmse_sd = _load_sigmas()

    answers = []
    for c in contracts:
        cid = int(c["id"])
        segments = c["segments"]
        sensor = int(c["sensor"])
        stat = c.get("stat", "mean")

        s_final, u_final = simulate_sticky_state(segments, n_in=n_in, params=sticky_params)
        y_mean, y_sd = predict_tail(out_model, s_final=s_final, u_final=u_final)

        mu = float(y_mean[sensor])
        sd = max(0.0, float(y_sd[sensor]))

        if stat == "sd":
            point = sd
            sigma = rmse_sd
            low = max(0.0, point - 2.5 * sigma)
            high = point + 2.5 * sigma
        else:
            # Combine model error + within-window uncertainty of the mean
            se = sd / math.sqrt(20.0)
            sigma = math.sqrt(rmse_mean**2 + se**2)
            point = mu
            low = point - 2.5 * sigma
            high = point + 2.5 * sigma
            low = _clamp(low, -5.0, 5.0)
            high = _clamp(high, -5.0, 5.0)

        answers.append({"id": cid, "mean": float(point), "low": float(low), "high": float(high)})

    sys.stdout.write(json.dumps({"answers": answers}, indent=2, sort_keys=True))
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

app/model/sticky_model.py (3,209 chars)
import math
from dataclasses import dataclass
from typing import Iterable, List, Sequence, Tuple


Vec = List[float]


def _abs(x: float) -> float:
    return -x if x < 0 else x


def _clip(x: float, lo: float, hi: float) -> float:
    if x < lo:
        return lo
    if x > hi:
        return hi
    return x


@dataclass(frozen=True)
class StickyParams:
    # Per-input state dynamics
    tau_set: Sequence[float]  # ticks, length n_in
    tau_decay: Sequence[float]  # ticks, length n_in (very large => near-persistent)
    deadband: float = 0.05


@dataclass(frozen=True)
class OutputModel:
    # For each sensor j:
    # y = base + sum_i (persist_abs[j,i]*abs(s_i) + persist_u[j,i]*s_i)
    #           + sum_i (direct_abs[j,i]*abs(u_i) + direct_u[j,i]*u_i)
    base_mean: Vec  # length n_out
    base_sd: Vec  # length n_out
    persist_abs_mean: List[Vec]  # [n_in][n_out]
    persist_u_mean: List[Vec]
    direct_abs_mean: List[Vec]
    direct_u_mean: List[Vec]
    persist_abs_sd: List[Vec]
    persist_u_sd: List[Vec]
    direct_abs_sd: List[Vec]
    direct_u_sd: List[Vec]


def simulate_sticky_state(
    segments: Sequence[dict],
    n_in: int,
    params: StickyParams,
) -> Tuple[Vec, Vec]:
    """
    Returns (s_final, u_final) for the protocol.
    """
    s = [0.0] * n_in
    u_final = [0.0] * n_in
    for seg in segments:
        t = int(seg["t"])
        if "u" in seg:
            u0 = list(seg["u"])
            u1 = u0
        else:
            u0 = list(seg["u_start"])
            u1 = list(seg["u_end"])
        if len(u0) != n_in or len(u1) != n_in:
            raise ValueError("bad input length in segment")
        u_final = u1[:]  # end-of-segment value

        # Approx: use average value during segment for state update (good for holds/ramp)
        u_avg = [(a + b) * 0.5 for a, b in zip(u0, u1)]
        for i in range(n_in):
            ui = _clip(u_avg[i], -1.0, 1.0)
            if _abs(ui) > params.deadband:
                tau = max(1e-6, float(params.tau_set[i]))
                frac = 1.0 - math.exp(-t / tau)
                s[i] = s[i] + frac * (ui - s[i])
            else:
                tau = max(1e-6, float(params.tau_decay[i]))
                s[i] = s[i] * math.exp(-t / tau)
            s[i] = _clip(s[i], -1.0, 1.0)
    return s, u_final


def predict_tail(
    model: OutputModel,
    s_final: Sequence[float],
    u_final: Sequence[float],
) -> Tuple[Vec, Vec]:
    n_in = len(s_final)
    n_out = len(model.base_mean)
    y_mean = model.base_mean[:]
    y_sd = model.base_sd[:]

    for i in range(n_in):
        si = float(s_final[i])
        ui = float(u_final[i])
        asi = _abs(si)
        aui = _abs(ui)
        pm_a = model.persist_abs_mean[i]
        pm_u = model.persist_u_mean[i]
        dm_a = model.direct_abs_mean[i]
        dm_u = model.direct_u_mean[i]
        ps_a = model.persist_abs_sd[i]
        ps_u = model.persist_u_sd[i]
        ds_a = model.direct_abs_sd[i]
        ds_u = model.direct_u_sd[i]
        for j in range(n_out):
            y_mean[j] += pm_a[j] * asi + pm_u[j] * si + dm_a[j] * aui + dm_u[j] * ui
            y_sd[j] += ps_a[j] * asi + ps_u[j] * si + ds_a[j] * aui + ds_u[j] * ui
    return y_mean, y_sd

app/tools/append_jsonl.py (769 chars)
#!/usr/bin/env python3
import json
import os
import sys
from datetime import datetime, timezone


def main() -> int:
    if len(sys.argv) != 2:
        print("usage: append_jsonl.py <path.jsonl>", file=sys.stderr)
        return 2
    path = sys.argv[1]
    os.makedirs(os.path.dirname(path) or ".", exist_ok=True)
    raw = sys.stdin.read().strip()
    if not raw:
        print("no input on stdin", file=sys.stderr)
        return 2
    obj = json.loads(raw)
    if isinstance(obj, dict) and "ts_utc" not in obj:
        obj["ts_utc"] = datetime.now(timezone.utc).isoformat()
    with open(path, "a", encoding="utf-8") as f:
        f.write(json.dumps(obj, sort_keys=True))
        f.write("\n")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())
app/tools/parse_tail.py (764 chars)
#!/usr/bin/env python3
"""
Extract tail_mean/tail_sd from a physim tool JSON response.

Usage:
  cat response.json | ./tools/parse_tail.py
"""
import json
import sys


def main() -> int:
    raw = sys.stdin.read().strip()
    if not raw:
        print("no input", file=sys.stderr)
        return 2
    obj = json.loads(raw)
    if isinstance(obj, dict) and "result" in obj and isinstance(obj["result"], str):
        obj = json.loads(obj["result"])
    out = {
        "ticks_run": obj.get("ticks_run"),
        "tail_mean": obj.get("tail_mean"),
        "tail_sd": obj.get("tail_sd"),
        "budget_left": obj.get("budget_left"),
    }
    sys.stdout.write(json.dumps(out, sort_keys=True))
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

Preparation contracts

idchannelbandsuccessreleased finals
10013[-1.09, -0.39]100%-0.75, -0.75, -0.74, -0.76
10111[+0.04, +0.53]100%+0.27, +0.26, +0.28, +0.29
10218[-0.95, -0.37]100%-0.66, -0.64, -0.67, -0.65

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.6250.0601.30.277
1S1+0.3930.0880.70.489
2S1+0.8760.0770.30.778
3S1+0.2900.0730.01.000
4S2-0.5500.0670.20.834
5S2+0.8780.0770.10.882
6S2+0.4110.0570.40.703
7S2+0.4010.0520.50.621
8S3-0.4780.0740.90.400
9S3+0.4440.0520.50.633
10S3+0.4370.0880.20.802
11S3-0.6860.0620.30.746
12S4-0.6540.0621.10.348
13S4-0.7450.08811.80.000
14S4+0.6020.0882.10.120
15S4-0.4350.0740.60.532
Verbatim log (108 entries)
{"budget_left": 200000, "phase": "explore"}
{"budget_left": 199800}
{"ticks_run": 800, "budget_left": 199000}
{"budget_left": 198800}
{"ticks_run": 600, "budget_left": 198200}
{"budget_left": 198000}
{"ticks_run": 600, "budget_left": 197400}
{"budget_left": 197200}
{"ticks_run": 800, "budget_left": 196400}
{"budget_left": 196200}
{"ticks_run": 800, "budget_left": 195400}
{"budget_left": 195200}
{"ticks_run": 600, "budget_left": 194600}
{"budget_left": 194400}
{"ticks_run": 800, "budget_left": 193600}
{"budget_left": 193400}
{"ticks_run": 800, "budget_left": 192600}
{"budget_left": 192400}
{"ticks_run": 800, "budget_left": 191600}
{"budget_left": 191400}
{"ticks_run": 800, "budget_left": 190600}
{"budget_left": 190400}
{"ticks_run": 800, "budget_left": 189600}
{"budget_left": 189400}
{"ticks_run": 800, "budget_left": 188600}
{"budget_left": 188400}
{"ticks_run": 800, "budget_left": 187600}
{"budget_left": 187400}
{"ticks_run": 800, "budget_left": 186600}
{"budget_left": 186400}
{"ticks_run": 800, "budget_left": 185600}
{"budget_left": 185400}
{"ticks_run": 800, "budget_left": 184600}
{"budget_left": 184400}
{"ticks_run": 800, "budget_left": 183600}
{"budget_left": 183400}
{"ticks_run": 800, "budget_left": 182600}
{"budget_left": 182400}
{"ticks_run": 800, "budget_left": 181600}
{"budget_left": 181400}
{"ticks_run": 800, "budget_left": 180600}
{"budget_left": 180400}
{"ticks_run": 800, "budget_left": 179600}
{"budget_left": 179400}
{"ticks_run": 800, "budget_left": 178600}
{"budget_left": 178400}
{"ticks_run": 250, "budget_left": 178150}
{"budget_left": 177950}
{"ticks_run": 300, "budget_left": 177650}
{"budget_left": 177450}
{"ticks_run": 400, "budget_left": 177050}
{"budget_left": 176850}
{"ticks_run": 600, "budget_left": 176250}
{"budget_left": 176050}
{"ticks_run": 1400, "budget_left": 174650}
{"budget_left": 174450}
{"ticks_run": 1400, "budget_left": 173050}
{"budget_left": 172850}
{"ticks_run": 850, "budget_left": 172000}
{"budget_left": 171800}
{"ticks_run": 1000, "budget_left": 170800}
{"budget_left": 170600}
{"ticks_run": 1400, "budget_left": 169200}
{"budget_left": 169000}
{"ticks_run": 1400, "budget_left": 167600}
{"budget_left": 167400}
{"ticks_run": 850, "budget_left": 166550}
{"budget_left": 166350}
{"ticks_run": 1000, "budget_left": 165350}
{"budget_left": 165150}
{"ticks_run": 1400, "budget_left": 163750}
{"budget_left": 163550}
{"ticks_run": 1400, "budget_left": 162150}
{"budget_left": 161950}
{"ticks_run": 1400, "budget_left": 160550}
{"budget_left": 160350}
{"ticks_run": 1400, "budget_left": 158950}
{"budget_left": 158750}
{"ticks_run": 1400, "budget_left": 157350}
{"budget_left": 157150}
{"ticks_run": 1400, "budget_left": 155750}
{"budget_left": 155550}
{"ticks_run": 1400, "budget_left": 154150}
{"budget_left": 153950}
{"ticks_run": 1400, "budget_left": 152550}
{"budget_left": 152350}
{"ticks_run": 1400, "budget_left": 150950}
{"budget_left": 150750}
{"ticks_run": 1400, "budget_left": 149350}
{"budget_left": 149150}
{"ticks_run": 1400, "budget_left": 147750}
{"budget_left": 147550}
{"ticks_run": 1400, "budget_left": 146150}
{"budget_left": 145950}
{"ticks_run": 850, "budget_left": 145100}
{"budget_left": 144900}
{"ticks_run": 1000, "budget_left": 143900}
{"budget_left": 143700}
{"ticks_run": 1400, "budget_left": 142300}
{"budget_left": 142100}
{"ticks_run": 1400, "budget_left": 140700}
{"budget_left": 140500}
{"ticks_run": 1400, "budget_left": 139100}
{"budget_left": 138900}
{"ticks_run": 1400, "budget_left": 137500}
{"phase": "answer"}
{"received": 16}
Submitted all 16 contract predictions via `physim_answer` (from `answers.json`) and all 3 preparation policies via `physim_answer_prep` (ids `100–102`).

Artifacts in workspace:
- `experiments/exp.jsonl` (all logged runs)
- `model/fit.json` (fitted sticky-state surrogate)
- `model/eval.json` (fit self-check RMSE)
- `contracts_slim.json`, `answers.json` (contract input + produced answers)
openai/gpt-5.2 · C3 seed 1 · tier tools · accuracy 0.56 · preparation 0.83 · budget 31%

S1=0.86 · S2=0.46 · S3=0.29 · S4=0.65 · coverage 0.81 · 263 nodes

Narrative experiment log

timeline
  1. Reset to fresh initial conditions (−200 ticks).
  2. 2× free run (320 ticks; 200 ticks, all inputs 0).
  3. Reset to fresh initial conditions (−200 ticks).
  4. Drive → release (9,200 ticks; drive +0.62 for 9000t, release 200t).
  5. Reset to fresh initial conditions (−200 ticks).
  6. Drive → release (9,200 ticks; drive +0.62 for 9000t, release 200t).
  7. Reset to fresh initial conditions (−200 ticks).
  8. Drive → release (6,800 ticks; drive +0.12 for 6600t, release 200t).
  9. Reset to fresh initial conditions (−200 ticks).
  10. Drive → release (6,800 ticks; drive +0.12 for 6600t, release 200t).
  11. Reset to fresh initial conditions (−200 ticks).
  12. Free run (1,200 ticks; 1200 ticks, all inputs 0).
  13. Reset to fresh initial conditions (−200 ticks).
  14. Single-port probe (1,200 ticks; port 0 at +0.12, 1200t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Single-port probe (1,200 ticks; port 0 at -0.12, 1200t).
  17. Reset to fresh initial conditions (−200 ticks).
  18. Single-port probe (500 ticks; port 0 at +0.12, 500t).
  19. Reset to fresh initial conditions (−200 ticks).
  20. Single-port probe (600 ticks; port 0 at +0.12, 600t).
  21. Reset to fresh initial conditions (−200 ticks).
  22. Single-port probe (800 ticks; port 0 at +0.12, 800t).
  23. Reset to fresh initial conditions (−200 ticks).
  24. Single-port probe (1,200 ticks; port 0 at +0.12, 1200t).
  25. Reset to fresh initial conditions (−200 ticks).
  26. Single-port probe (2,000 ticks; port 0 at +0.12, 2000t).
  27. Reset to fresh initial conditions (−200 ticks).
  28. Uniform drive (1,200 ticks; -0.25 held 1200t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Uniform drive (1,200 ticks; +0.19 held 1200t).
  31. Reset to fresh initial conditions (−200 ticks).
  32. Uniform drive (1,200 ticks; -0.44 held 1200t).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Uniform drive (1,200 ticks; +0.12 held 1200t).
  35. Reset to fresh initial conditions (−200 ticks).
  36. Uniform drive (1,200 ticks; +0.06 held 1200t).
  37. Reset to fresh initial conditions (−200 ticks).
  38. Uniform drive (1,200 ticks; -0.25 held 1200t).
  39. Reset to fresh initial conditions (−200 ticks).
  40. Drive → release (1,600 ticks; drive +0.06 for 800t, release 800t).
  41. Reset to fresh initial conditions (−200 ticks).
  42. Multi-port probe (1,200 ticks; ports [0, 1, 2] at +0.06, 1200t).
  43. Reset to fresh initial conditions (−200 ticks).
  44. Multi-port probe (500 ticks; ports [0, 1, 2] at +0.06, 500t).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Multi-port probe (600 ticks; ports [0, 1, 2] at +0.06, 600t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. Multi-port probe (800 ticks; ports [0, 1, 2] at +0.06, 800t).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Multi-port probe (1,200 ticks; ports [0, 1, 2] at +0.06, 1200t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Drive → release (2,000 ticks; drive +0.06 for 1200t, release 800t).
  53. Ended exploration → received 16 prediction contracts + 3 preparation contracts.
  54. Submitted preparation policy for contract 100 ("Drive channel 22 into [-0.766, -0.243], then release to zeros.").
  55. Submitted preparation policy for contract 101 ("Drive channel 25 into [0.005, 0.427], then release to zeros.").
  56. Submitted preparation policy for contract 102 ("Drive channel 14 into [-1.129, -0.6], then release to zeros.").
  57. Submitted 16 contract answers.

Agent-written files (its instruments & theories)

app/data/model.json (10,356 chars)
{"features": {"desc": "u_i (delta from y_base)", "p": 8}, "n_eq": 10, "lam": 0.01, "y_base": [0.8042, -0.9417, 0.1794, -0.1796, -0.7179, -0.5027, -0.049, -0.8496, -0.125, -0.1168, -0.6532, -0.535, 0.3869, -0.5637, 0.0168, 0.1184, -0.069, 0.1052, 0.7391, -0.3892, 0.7513, -0.5887, 0.6647, 0.3424, -0.5405, -0.6791, -0.2053, -0.9085, 0.4922, 0.3326, -0.7125, -0.5265, -0.0812, 0.7504, -0.3373, -0.3986, 0.0033, -0.9104, 0.5692, 0.068], "eq_W": [[0.0010369394170801948, -0.013641149257349161, 0.0033307106670699264, -0.006925328462573118, -0.006519443820662733, -0.002723778767908271, -0.028468135953676615, 0.01233475882023125, 2.9497302445159702e-05, 0.027927291629202666, 0.010799361684275685, 0.0032513860640705984, -0.014193904268240087, 0.002853338401582885, 0.07468042142620987, 0.004349320001518429, -0.0038555360837022406, -0.0001607232184446675, 0.007380525925409052, 0.0023621130712436255, 0.01190546188624123, 0.007299638185593527, -0.03429489804556814, -0.006386924712694025, 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-0.008155787119785029, -0.11682619998115296, 0.10224238069512709, 0.04643391455545377, -0.03177926938432444], [0.12972094229677755, 0.022041173748881805, 0.0052196166235788325, -0.033200198334951, -0.004995212153377036, -0.00526266360836678, 1.2421568901831042, -0.09758396442823589, -0.18429338255546884, -1.1595634509409987, 0.034171158744611546, -0.04404508047694803, 0.06643086122294292, -0.011170540843933392, 3.392273896306619, -0.07155487374551714, 0.02213819839803625, -0.0291872691975742, 0.07389481716588345, -0.021761017648726455, -0.022132451772428483, -0.048610176530390764, 4.739662854407897, 0.06513804037003662, -0.03643529516909025, -3.6991304537266245, -1.8409237442837312, -0.07167809690947409, 0.06286483401667331, -0.0027227012981168378, -0.05156884811638305, -0.09075111009607198, 0.010510462895187596, -0.01569530357034721, -0.06577387192493564, 0.017656811816071146, 0.6430367846290199, -0.160276206755667, -0.027101312420317228, 0.03643939982713118], [0.02358806423336118, 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-0.004006906449891582, 0.032014768217295514, -0.015397480314966055, 1.2772035149419765, -0.03165506867262047, -0.00722423228035597, -0.01202104248168853, 0.01923477818183274, -0.01883354469311785, -0.022177163815684908, 0.009787740170045769, 1.6786343582766232, 0.017788843438214127, -0.0025520623160527316, -1.3426795382811205, -0.7223836950289377, -0.031263163396537445, 0.025174371870730045, -0.0034478710006716207, -0.014819900168123474, -0.03414340280879667, 0.007385086879106072, -0.024875428238469395, 0.06721401006046146, 0.01956344624078822, -0.0021967779260949893, -0.038822296703807276, -0.01554625105825511, 0.002156079415649831], [0.028504651334568816, 0.0008329592215006573, -0.021175859963742816, 0.0028143544188012834, 0.039809622717289286, 0.02729061319904062, 0.5265744965872747, -0.04427755248458573, -0.004734846289165072, -0.1945082912255887, -0.01750710508723877, -0.03462137392400507, 0.03307405812779398, 0.0011949311756831674, -0.14429991466775013, 0.02200115630530384, 0.04106336496679676, -0.017674266323797535, 0.01351490504336401, 0.026874120931819637, 0.004446413012828799, -0.07747573604907623, 0.026938381279062052, 0.04209002559248148, -0.016459993994674724, 0.03428031956346539, 0.250672717494355, -0.010650811245477159, -0.031546908267184544, 0.04015690817658376, -0.015931558489380878, -0.02844882770378419, -0.05914059368814412, 0.004512027456363803, 0.0241501554941822, -0.0025863711440215166, 0.5666517355072406, -0.026876209888287858, 0.007293219161327812, -0.012807472437780479]], "sd_med": [0.0466, 0.04895, 0.04395, 0.04875, 0.04735, 0.04115, 0.047950000000000007, 0.046700000000000005, 0.043149999999999994, 0.0523, 0.0474, 0.0515, 0.0505, 0.049949999999999994, 0.0508, 0.050949999999999995, 0.05105, 0.047450000000000006, 0.0469, 0.04875, 0.0527, 0.0467, 0.0492, 0.050100000000000006, 0.04445, 0.05505, 0.049350000000000005, 0.0485, 0.0485, 0.042300000000000004, 0.04575, 0.04865, 0.0463, 0.05005, 0.047450000000000006, 0.05425, 0.05305, 0.04505, 0.047799999999999995, 0.04965], "rmse_eq": [0.011284011780570952, 0.002268735468599831, 0.008036670128911693, 0.00333883603663949, 0.011990313857255986, 0.0012163150550577144, 0.03497863327077101, 0.004444211217149972, 0.01581845136770684, 0.14708574287000092, 0.002230530182494836, 0.008125729282065041, 0.00767847028723562, 0.007141390454972931, 0.34194521967148905, 0.014145633598633887, 0.0069223638345192965, 0.0021685782444903746, 0.0046750585114104445, 0.005044686220430637, 0.00746042901247921, 0.014473276329622422, 0.5158130305470765, 0.011528565892471927, 0.004865375334374281, 0.40774277096046224, 0.16375541751150471, 0.007112617798987653, 0.004283206075527913, 0.002448857448520664, 0.0037952774370451723, 0.009801297750832714, 0.0023363093234270494, 0.005628030174981797, 0.00857004325643202, 0.0023126385547639437, 0.013318235072188997, 0.018059419678381608, 0.001721350960969216, 0.002387251105694224], "a": [0.9955110767417229, 0.9987576830864474, 0.9993809350418789, 0.9950124791926823, 0.9905245340136118, 0.9997674720216797, 0.9975301810839908, 0.9997804632609002, 0.9950124791926823, 0.9976854988280053, 0.9998790651408487, 0.9979685633798052, 0.9994716873411181, 0.9961319121936646, 0.9950124791926823, 0.9950124791926823, 0.9982024570752367, 0.9968676462287558, 0.9950124791926823, 0.9950124791926823, 0.9983994844781036, 0.9971018557207023, 0.9950124791926823, 0.9989097568846358, 0.9950124791926823, 0.9998684366495454, 0.9898094963313089, 0.9993596306005489, 0.9968092883435621, 0.9968336793854417, 0.9939152654134126, 0.998201903143623, 0.9950124791926823, 0.9950124791926823, 0.9996386933361171, 0.9990049507958503, 0.9786189152370769, 0.9951494398428107, 0.9950124791926823, 0.9977220170554785], "calib": {"u0": [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], "y0": [0.8042, -0.9417, 0.1794, -0.1796, -0.7179, -0.5027, -0.049, -0.8496, -0.125, -0.1168, -0.6532, -0.535, 0.3869, -0.5637, 0.0168, 0.1184, -0.069, 0.1052, 0.7391, -0.3892, 0.7513, -0.5887, 0.6647, 0.3424, -0.5405, -0.6791, -0.2053, -0.9085, 0.4922, 0.3326, -0.7125, -0.5265, -0.0812, 0.7504, -0.3373, -0.3986, 0.0033, -0.9104, 0.5692, 0.068], "step_targets": ["[1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]", "[1.0, -1.0, 0.5, 0.0, 0.0, 0.0, 0.0, 0.0]"], "step_Ls_by_u": {"[1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]": [100, 200, 400, 800, 1600], "[1.0, -1.0, 0.5, 0.0, 0.0, 0.0, 0.0, 0.0]": [100, 200, 400, 800]}}}
app/physim/fit_model.py (7,080 chars)
#!/usr/bin/env python3
import argparse
import json
import math
from statistics import median


def featurize(u):
    # Intercept handled separately via y_base (equilibrium at u=0)
    return [float(x) for x in u]


def dot(a, b):
    return sum(x * y for x, y in zip(a, b))


def solve_linear_system_multi_rhs(A, B):
    """
    Solve A X = B for square A (n x n) and B (n x m).
    Uses Gauss-Jordan elimination with partial pivoting.
    """
    n = len(A)
    m = len(B[0])
    # build augmented matrix [A | B]
    M = [A[i][:] + B[i][:] for i in range(n)]
    for col in range(n):
        # pivot
        pivot_row = max(range(col, n), key=lambda r: abs(M[r][col]))
        if abs(M[pivot_row][col]) < 1e-12:
            raise ValueError("singular matrix")
        if pivot_row != col:
            M[col], M[pivot_row] = M[pivot_row], M[col]

        # normalize pivot row
        piv = M[col][col]
        inv = 1.0 / piv
        for j in range(col, n + m):
            M[col][j] *= inv

        # eliminate other rows
        for r in range(n):
            if r == col:
                continue
            factor = M[r][col]
            if factor == 0.0:
                continue
            for j in range(col, n + m):
                M[r][j] -= factor * M[col][j]

    X = [[M[i][n + j] for j in range(m)] for i in range(n)]
    return X


def main():
    ap = argparse.ArgumentParser()
    ap.add_argument("--eq", default="data/equilibrium.jsonl")
    ap.add_argument("--steps", default="data/step_time.jsonl")
    ap.add_argument("--out", default="data/model.json")
    ap.add_argument("--lam", type=float, default=1e-2)
    ap.add_argument("--eps", type=float, default=1e-6)
    args = ap.parse_args()

    # Load equilibrium data
    eq_rows = []  # list of (u[8], y[40], sd[40])
    with open(args.eq, "r", encoding="utf-8") as f:
        for line in f:
            if not line.strip():
                continue
            rec = json.loads(line)
            if rec.get("kind") != "eq":
                continue
            u = rec["meta"]["u"]
            tm = rec["data"]["tail_mean"]
            tsd = rec["data"]["tail_sd"]
            uu = [float(x) for x in u]
            yy = [float(tm[str(i)]) for i in range(40)]
            ss = [float(tsd[str(i)]) for i in range(40)]
            eq_rows.append((uu, yy, ss))

    if not eq_rows:
        raise SystemExit("no equilibrium records found")

    # baseline equilibrium at u=0 (average if multiple)
    base_ys = [yy for (uu, yy, _) in eq_rows if all(abs(x) < 1e-12 for x in uu)]
    if not base_ys:
        raise SystemExit("need at least one equilibrium record with u=0 to anchor intercept")
    y_base = [sum(v[s] for v in base_ys) / len(base_ys) for s in range(40)]

    X_rows = [featurize(uu) for (uu, _, _) in eq_rows]
    Y_rows = [[yy[s] - y_base[s] for s in range(40)] for (_, yy, _) in eq_rows]
    SD_rows = [ss for (_, _, ss) in eq_rows]

    n = len(X_rows)
    p = len(X_rows[0])  # 8
    # Build XtX and XtY
    XtX = [[0.0] * p for _ in range(p)]
    XtY = [[0.0] * 40 for _ in range(p)]
    for x, y in zip(X_rows, Y_rows):
        for i in range(p):
            xi = x[i]
            for j in range(p):
                XtX[i][j] += xi * x[j]
            for s in range(40):
                XtY[i][s] += xi * y[s]
    for i in range(p):
        XtX[i][i] += args.lam

    W = solve_linear_system_multi_rhs(XtX, XtY)  # p x 40

    # training rmse per sensor (for interval calibration), in absolute y units
    rmse = [0.0 for _ in range(40)]
    if n:
        sse = [0.0 for _ in range(40)]
        for x, y in zip(X_rows, Y_rows):
            for s in range(40):
                yhat_delta = dot(x, [W[i][s] for i in range(p)])
                e = y[s] - yhat_delta
                sse[s] += e * e
        for s in range(40):
            rmse[s] = math.sqrt(sse[s] / n)

    # sd_med per sensor
    sd_med = []
    for s in range(40):
        sd_med.append(median([row[s] for row in SD_rows]))

    def f_eq(u):
        x = featurize(u)
        return [y_base[s] + dot(x, [W[i][s] for i in range(p)]) for s in range(40)]

    u0 = [0.0] * 8
    y0 = f_eq(u0)

    # Load step-time records grouped by target u
    steps_by_u = {}  # key=json(u) -> list of (L, yL[40])
    with open(args.steps, "r", encoding="utf-8") as f:
        for line in f:
            if not line.strip():
                continue
            rec = json.loads(line)
            if rec.get("kind") != "step":
                continue
            meta = rec["meta"]
            u = meta.get("u")
            if not (isinstance(u, list) and len(u) == 8):
                continue
            L = int(meta["L"])
            tm = rec["data"]["tail_mean"]
            yL = [float(tm[str(i)]) for i in range(40)]
            key = json.dumps([float(x) for x in u])
            steps_by_u.setdefault(key, []).append((L, yL))

    # Fit per-sensor a using log ratios (median)
    default_a = math.exp(-1.0 / 200.0)
    a = [default_a for _ in range(40)]
    # Compute candidate a_s per sensor per step target u; pick the one with most valid ratios
    step_Ls_by_u = {}
    for key, items in steps_by_u.items():
        items = sorted(items, key=lambda t: t[0])
        steps_by_u[key] = items
        step_Ls_by_u[key] = [L for L, _ in items]

    if steps_by_u:
        for s in range(40):
            best = None  # (n_valid, a_s)
            for key, items in steps_by_u.items():
                u = json.loads(key)
                y_inf_u = f_eq(u)[s]
                d0 = y0[s] - y_inf_u
                if abs(d0) < args.eps:
                    continue
                logs = []
                for L, yL in items:
                    dL = yL[s] - y_inf_u
                    r = dL / d0
                    # Expect monotone relaxation: 0 < r < 1 (ignore overshoot / bad eq estimates)
                    if not (0.0 < r < 1.0) or not math.isfinite(r):
                        continue
                    logs.append(math.log(r) / L)
                if not logs:
                    continue
                loga = median(logs)
                a_s = math.exp(loga)
                if a_s < 0.0:
                    a_s = 0.0
                if a_s > 0.9999:
                    a_s = 0.9999
                cand = (len(logs), a_s)
                if best is None or cand[0] > best[0]:
                    best = cand
            if best is not None:
                a[s] = best[1]

    model = {
        "features": {"desc": "u_i (delta from y_base)", "p": p},
        "n_eq": n,
        "lam": args.lam,
        "y_base": y_base,
        "eq_W": W,
        "sd_med": sd_med,
        "rmse_eq": rmse,
        "a": a,
        "calib": {"u0": u0, "y0": y0, "step_targets": list(step_Ls_by_u.keys()), "step_Ls_by_u": step_Ls_by_u},
    }

    with open(args.out, "w", encoding="utf-8") as f:
        json.dump(model, f)

    n_steps = sum(len(v) for v in steps_by_u.values())
    print("wrote", args.out, "n_eq", n, "n_steps", n_steps, "p", p, "n_step_targets", len(steps_by_u))


if __name__ == "__main__":
    main()
app/physim/ingest.py (987 chars)
#!/usr/bin/env python3
import argparse, json, sys, time

def main():
    ap = argparse.ArgumentParser()
    ap.add_argument('--tag', required=True)
    ap.add_argument('--channels', required=True, help='comma-separated channels (ints)')
    ap.add_argument('--out', default='data/observations.jsonl')
    args = ap.parse_args()

    raw = sys.stdin.read().strip()
    if not raw:
        raise SystemExit('no stdin')

    try:
        outer = json.loads(raw)
        if isinstance(outer, dict) and 'result' in outer:
            inner = json.loads(outer['result'])
        else:
            inner = outer
    except Exception:
        inner = json.loads(raw)

    rec = {
        'tag': args.tag,
        'channels': [int(x) for x in args.channels.split(',') if x.strip()!=''],
        'ts_unix': time.time(),
        'data': inner,
    }

    with open(args.out, 'a', encoding='utf-8') as f:
        f.write(json.dumps(rec))
        f.write('\n')

if __name__ == '__main__':
    main()
app/physim/model_fit.py (4,591 chars)
#!/usr/bin/env python3
import json, argparse
import numpy as np

# Protocol used for identification (must match tool runs tagged with this)
PROTOCOL_STEPS = [
  {"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [-1, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 1, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, -1, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 1, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, -1, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 1, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, -1, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 1, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, -1, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 1, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, -1, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 1, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, -1, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 1]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, -1]},
  {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]},
]

TOTAL_TICKS = sum(s['t'] for s in PROTOCOL_STEPS)


def u_at_tick(t):
    acc = 0
    for seg in PROTOCOL_STEPS:
        if t < acc + seg['t']:
            return np.array(seg['u'], dtype=float)
        acc += seg['t']
    return np.array(PROTOCOL_STEPS[-1]['u'], dtype=float)


def build_u_series(stride, n):
    # sample u at ticks 0, stride, 2*stride, ...
    out = np.zeros((n, 8), dtype=float)
    for k in range(n):
        out[k] = u_at_tick(k * stride)
    return out


def ridge_fit(X, y, lam):
    # closed form (X^T X + lam I)^-1 X^T y
    XtX = X.T @ X
    XtX.flat[:: XtX.shape[0] + 1] += lam
    w = np.linalg.solve(XtX, X.T @ y)
    return w


def main():
    ap = argparse.ArgumentParser()
    ap.add_argument('--obs', default='data/observations.jsonl')
    ap.add_argument('--tag', default='steps_v1')
    ap.add_argument('--out', default='data/model_ar1.json')
    ap.add_argument('--lam', type=float, default=1e-3)
    ap.add_argument('--drop_points', type=int, default=10)
    args = ap.parse_args()

    # Gather time series per channel
    ys = {i: [] for i in range(40)}
    us = {i: [] for i in range(40)}

    with open(args.obs, 'r', encoding='utf-8') as f:
        for line in f:
            if not line.strip():
                continue
            rec = json.loads(line)
            if rec.get('tag') != args.tag:
                continue
            data = rec['data']
            stride = int(data.get('series_stride', 1))
            series = data.get('series') or {}
            # Determine n points from any channel
            any_chan = next(iter(series.keys()))
            n = len(series[any_chan])
            u_series = build_u_series(stride, n)
            for ch_str, arr in series.items():
                ch = int(ch_str)
                y = np.asarray(arr, dtype=float)
                ys[ch].append(y)
                us[ch].append(u_series)

    model = {'tag': args.tag, 'lam': args.lam, 'drop_points': args.drop_points, 'channels': {}}

    for ch in range(40):
        if not ys[ch]:
            continue
        Y = np.concatenate(ys[ch])
        U = np.concatenate(us[ch])

        # ARX(1): y_t = a*y_{t-1} + b·u_t + c
        dp = args.drop_points
        if len(Y) <= dp + 1:
            continue
        y = Y[dp:]
        y_prev = Y[dp-1:-1]
        u = U[dp:]

        X = np.column_stack([y_prev, u, np.ones(len(y))])
        w = ridge_fit(X, y, args.lam)
        a = float(w[0])
        b = w[1:9].astype(float)
        c = float(w[9])

        y_hat = X @ w
        resid = y - y_hat
        rmse = float(np.sqrt(np.mean(resid**2)))

        model['channels'][str(ch)] = {
            'a': a,
            'b': b.tolist(),
            'c': c,
            'rmse': rmse,
        }

    with open(args.out, 'w', encoding='utf-8') as f:
        json.dump(model, f, indent=2)

    print('wrote', args.out, 'channels', len(model['channels']))

if __name__ == '__main__':
    main()
app/physim/predict_contracts.py (3,753 chars)
#!/usr/bin/env python3
import argparse, json, math


def dot(a, b):
    return sum(x * y for x, y in zip(a, b))


def featurize(u):
    return [float(x) for x in u]


def f_eq(model, u):
    x = featurize(u)
    W = model['eq_W']
    p = model['features']['p']
    y_base = model['y_base']
    return [float(y_base[s]) + dot(x, [W[i][s] for i in range(p)]) for s in range(40)]


def advance_segment(y0, y_eq, a, t):
    # For nonzero input: y(t) = y_eq + (y0 - y_eq) * a^t
    out = [0.0]*40
    for s in range(40):
        out[s] = y_eq[s] + (y0[s] - y_eq[s]) * (a[s] ** t)
    return out


def mean_last_k_ticks(y_start, y_eq, a_s, t, k=20):
    # assumes constant input for t ticks, starting at y_start, eq y_eq
    # returns mean over last k ticks (ticks t-k ... t-1)
    if k <= 0:
        return y_eq
    if t <= 0:
        return y_start
    if t < k:
        k = t
    out = [0.0]*40
    for s in range(40):
        a = a_s[s]
        if a >= 0.999999:
            # nearly no relaxation
            out[s] = y_eq[s] + (y_start[s] - y_eq[s])
            continue
        scale = (a ** (t - k))
        geom = (1.0 - (a ** k)) / (1.0 - a)
        out[s] = y_eq[s] + (y_start[s] - y_eq[s]) * scale * (geom / k)
    return out


def simulate_protocol(model, segments, y_init=None):
    a = model['a']
    if y_init is None:
        y = list(model['calib']['y0'])
    else:
        y = list(y_init)

    # simulate all but last segment to get y at start of last
    if not segments:
        return y, y

    for seg in segments[:-1]:
        t = int(seg['t'])
        u = seg.get('u')
        if u is None:
            raise ValueError('segment missing u')
        if all(float(x) == 0.0 for x in u):
            # empirical: many channels behave like sample-and-hold at u=0
            y = y
        else:
            y_eq = f_eq(model, u)
            y = advance_segment(y, y_eq, a, t)

    last = segments[-1]
    t_last = int(last['t'])
    u_last = last['u']
    if all(float(x) == 0.0 for x in u_last):
        mean_last20 = y[:]  # hold
        y_end = y[:]
    else:
        y_eq_last = f_eq(model, u_last)
        mean_last20 = mean_last_k_ticks(y, y_eq_last, a, t_last, k=20)
        y_end = advance_segment(y, y_eq_last, a, t_last)
    return mean_last20, y_end


def main():
    ap = argparse.ArgumentParser()
    ap.add_argument('--model', default='data/model.json')
    ap.add_argument('--contracts', required=True, help='contracts json from physim_ready')
    ap.add_argument('--out', default='data/predictions.json')
    args = ap.parse_args()

    model = json.load(open(args.model, 'r', encoding='utf-8'))
    contracts = json.load(open(args.contracts, 'r', encoding='utf-8'))

    preds = []
    for c in contracts:
        proto = c['protocol']
        sensor = int(c['sensor'])
        stat = c['stat']  # 'mean' or 'sd'
        mean_last20, _ = simulate_protocol(model, proto)
        if stat == 'mean':
            mean = float(mean_last20[sensor])
            # uncertainty: combine eq rmse and sensor noise
            rmse = float(model.get('rmse_eq', [0.05]*40)[sensor])
            noise = float(model['sd_med'][sensor])
            sigma = math.sqrt(rmse*rmse + noise*noise)
            low = mean - 2.0*sigma
            high = mean + 2.0*sigma
        elif stat == 'sd':
            mean = float(model['sd_med'][sensor])
            sigma = 0.5*mean
            low = max(0.0, mean - 2.0*sigma)
            high = mean + 2.0*sigma
        else:
            raise ValueError('unknown stat '+stat)

        preds.append({'id': int(c['id']), 'mean': mean, 'low': low, 'high': high})

    json.dump(preds, open(args.out,'w',encoding='utf-8'), indent=2)
    print('wrote', args.out)


if __name__ == '__main__':
    main()
app/physim/protocol_segments.json (5,110 chars)
[
  {
    "t": 400,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      -1,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      1,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      -1,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      1,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      -1,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      1,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
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      0
    ]
  },
  {
    "t": 200,
    "u": [
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      -1,
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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  },
  {
    "t": 200,
    "u": [
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  },
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    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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      0,
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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      0,
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      -1,
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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      1
    ]
  },
  {
    "t": 200,
    "u": [
      0,
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      0,
      0,
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  },
  {
    "t": 200,
    "u": [
      0,
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      0,
      0,
      0,
      0,
      0,
      -1
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      1.0,
      1.0,
      1.0,
      0.0,
      1.0,
      1.0,
      1.0,
      -1.0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0.0,
      0.0,
      1.0,
      0.0,
      0.0,
      0.0,
      1.0,
      -1.0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      1.0,
      0.0,
      -1.0,
      0.0,
      1.0,
      0.0,
      -1.0,
      1.0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      1.0,
      1.0,
      0.0,
      0.0,
      0.0,
      1.0,
      0.0,
      1.0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      -1.0,
      0.0,
      1.0,
      -1.0,
      0.0,
      -1.0,
      -1.0,
      0.0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      1.0,
      1.0,
      1.0,
      0.0,
      1.0,
      0.0,
      -1.0,
      1.0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  }
]
app/physim/protocol_steps.json (3,673 chars)
[
  {
    "t": 400,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      1,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      -1,
      0,
      0,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
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      0
    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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      -1,
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      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
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      0
    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
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    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      -1,
      0,
      0,
      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
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      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
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      1,
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      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
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    ]
  },
  {
    "t": 200,
    "u": [
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      0,
      -1,
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      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
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      0,
      0,
      0
    ]
  },
  {
    "t": 200,
    "u": [
      0,
      0,
      0,
      0,
      1,
      0,
      0,
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    ]
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  }
]
app/physim/random_us.json (5,012 chars)
[
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]
app/physim/record.py (788 chars)
#!/usr/bin/env python3
import argparse, json, sys, time

def main():
    ap = argparse.ArgumentParser()
    ap.add_argument('--out', required=True)
    ap.add_argument('--kind', required=True)
    ap.add_argument('--meta', default='{}', help='json dict')
    args = ap.parse_args()

    raw = sys.stdin.read().strip()
    if not raw:
        raise SystemExit('no stdin')

    outer = json.loads(raw)
    inner = json.loads(outer['result']) if isinstance(outer, dict) and 'result' in outer else outer

    rec = {
        'kind': args.kind,
        'meta': json.loads(args.meta),
        'ts_unix': time.time(),
        'data': inner,
    }

    with open(args.out, 'a', encoding='utf-8') as f:
        f.write(json.dumps(rec))
        f.write('\n')

if __name__ == '__main__':
    main()

Preparation contracts

idchannelbandsuccessreleased finals
10022[-0.77, -0.24]100%-0.40, -0.43, -0.41, -0.37
10125[+0.00, +0.43]100%+0.20, +0.18, +0.18, +0.17
10214[-1.13, -0.60]50%-0.62, -0.56, -0.59, -0.63

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1+0.7800.0870.30.756
1S1+0.0100.0670.10.905
2S1-0.3970.0490.20.858
3S1+0.0110.0660.10.914
4S2-0.1750.0370.80.452
5S2-0.8340.0710.20.785
6S2+0.0160.0677.40.001
7S2-0.0410.0540.50.597
8S3-0.6940.0531.30.267
9S3+0.2260.05317.20.000
10S3+0.0210.0679.90.000
11S3-0.6600.0660.10.895
12S4+0.3800.0530.00.990
13S4-0.0780.0400.20.807
14S4-0.8340.0710.20.808
15S4+0.6410.04710.20.000
Verbatim log (55 entries)
{"budget_left": 200000, "phase": "explore"}
{"budget_left": 199800}
{"ticks_run": 200, "budget_left": 199600}
{"ticks_run": 120, "budget_left": 199480}
{"budget_left": 199280}
{"budget_left": 189880}
{"budget_left": 180480}
{"ticks_run": 6800, "budget_left": 173680}
{"budget_left": 173480}
{"ticks_run": 6800, "budget_left": 166680}
{"budget_left": 166480}
{"ticks_run": 1200, "budget_left": 165280}
{"budget_left": 165080}
{"ticks_run": 1200, "budget_left": 163880}
{"budget_left": 163680}
{"ticks_run": 1200, "budget_left": 162480}
{"budget_left": 162280}
{"ticks_run": 500, "budget_left": 161780}
{"budget_left": 161580}
{"ticks_run": 600, "budget_left": 160980}
{"budget_left": 160780}
{"ticks_run": 800, "budget_left": 159980}
{"budget_left": 159780}
{"ticks_run": 1200, "budget_left": 158580}
{"budget_left": 158380}
{"ticks_run": 2000, "budget_left": 156380}
{"budget_left": 156180}
{"ticks_run": 1200, "budget_left": 154980}
{"budget_left": 154780}
{"ticks_run": 1200, "budget_left": 153580}
{"budget_left": 153380}
{"ticks_run": 1200, "budget_left": 152180}
{"budget_left": 151980}
{"ticks_run": 1200, "budget_left": 150780}
{"budget_left": 150580}
{"ticks_run": 1200, "budget_left": 149380}
{"budget_left": 149180}
{"ticks_run": 1200, "budget_left": 147980}
{"budget_left": 147780}
{"ticks_run": 1600, "budget_left": 146180}
{"budget_left": 145980}
{"ticks_run": 1200, "budget_left": 144780}
{"budget_left": 144580}
{"ticks_run": 500, "budget_left": 144080}
{"budget_left": 143880}
{"ticks_run": 600, "budget_left": 143280}
{"budget_left": 143080}
{"ticks_run": 800, "budget_left": 142280}
{"budget_left": 142080}
{"ticks_run": 1200, "budget_left": 140880}
{"budget_left": 140680}
{"ticks_run": 2000, "budget_left": 138680}
{"phase": "answer"}
{"received": 16}
Submitted:
- Final numeric answers for contracts `0–15` via `mcp__physim.answer`.
- Preparation policies for contracts `100–102` via `mcp__physim.answer_prep` (feedback drives target channel into the band, then releases to all-zero inputs).

anthropic--claude-fable-5--claude_code — C4 (2 rollouts, mean acc 0.235)

anthropic/claude-fable-5 · C4 seed 1 · tier tools · accuracy 0.24 · calibration 0.42 · theory 0.56 · budget 18%

S1=0.44 · S2=0.19 · S3=0.08 · S4=0.24 · coverage 0.38 · 298 nodes

Narrative experiment log

timeline
  1. 2× free run (500 ticks; 200 ticks, all inputs 0) — ch26 -0.95→+0.30, ch5 +0.25→-0.39, ch37 -0.26→-0.69.
  2. 2× single-port probe (440 ticks; port 0 at +0.10, 200t) — ch7 -0.69→+0.36, ch10 -0.81→+0.14, ch23 -0.35→+0.55.
  3. ✗ single-port probe rejected: series observation limited to <=6 channels.
  4. 12× single-port probe (4,910 ticks; port 0 at -0.10, 250t) — ch11 -0.41→+0.82, ch36 +0.17→-1.05, ch1 -0.80→+0.41.
  5. Drive → release (700 ticks; drive +0.10 for 400t, release 300t) — ch4 +0.61→-0.55, ch0 +0.40→+1.15, ch36 -1.05→-0.53.
  6. Free run (600 ticks; 600 ticks, all inputs 0) — ch4 -0.55→+0.20.
  7. 5× single-port probe (2,600 ticks; port 0 at -0.12, 520t) — ch4 +0.34→-0.79.
  8. 3× free run (2,640 ticks; 520 ticks, all inputs 0) — ch4 +0.29→+0.63.
  9. Drive → release (1,300 ticks; drive -1.00 for 600t, release 700t) — ch4 +0.63→-0.61.
  10. Reset to fresh initial conditions (−200 ticks).
  11. Free run (500 ticks; 500 ticks, all inputs 0).
  12. 2× drive → release (2,800 ticks; drive +0.12 for 800t, release 600t).
  13. Reset to fresh initial conditions (−200 ticks).
  14. Drive → release (1,200 ticks; drive +0.12 for 400t, release 800t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Drive → release (1,000 ticks; drive +0.12 for 150t, release 850t).
  17. Reset to fresh initial conditions (−200 ticks).
  18. 2× drive → release (1,600 ticks; drive +0.12 for 200t, release 600t).
  19. Reset to fresh initial conditions (−200 ticks).
  20. 2× drive → release (1,760 ticks; drive +0.75 for 200t, release 600t) — ch4 -0.55→-1.21.
  21. 11× free run (1,396 ticks; 700 ticks, all inputs 0) — ch22 +0.57→-0.72, ch11 -0.81→+0.15, ch10 +0.05→-0.82.
  22. 4× single-port probe (624 ticks; port 0 at +0.07, 156t) — ch11 +0.00→+0.48, ch33 -0.14→+0.19, ch28 +0.74→+0.42.
  23. 2× free run (312 ticks; 156 ticks, all inputs 0).
  24. 4× single-port probe (624 ticks; port 2 at +0.07, 156t).
  25. Free run (156 ticks; 156 ticks, all inputs 0).
  26. 4× single-port probe (624 ticks; port 4 at +0.07, 156t) — ch24 -0.38→-0.81, ch12 -0.60→-0.33, ch38 -0.62→-0.37.
  27. 2× free run (312 ticks; 156 ticks, all inputs 0).
  28. 4× single-port probe (624 ticks; port 6 at +0.07, 156t).
  29. Free run (156 ticks; 156 ticks, all inputs 0).
  30. Reset to fresh initial conditions (−200 ticks).
  31. 8× free run (1,296 ticks; 162 ticks, all inputs 0).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Drive → release (2,000 ticks; drive +0.07 for 1500t, release 500t).
  34. Reset to fresh initial conditions (−200 ticks).
  35. Drive → release (1,800 ticks; drive -0.07 for 1500t, release 300t).
  36. 2× free run (800 ticks; 400 ticks, all inputs 0).
  37. Reset to fresh initial conditions (−200 ticks).
  38. Drive → release (1,200 ticks; drive -0.07 for 900t, release 300t).
  39. Multi-port probe (1,200 ticks; ports [2, 3, 4, 6] at +0.07, 1200t).
  40. Reset to fresh initial conditions (−200 ticks).
  41. Single-port probe (900 ticks; port 1 at +0.10, 900t).
  42. Reset to fresh initial conditions (−200 ticks).
  43. Free run (340 ticks; 340 ticks, all inputs 0).
  44. Drive → release (600 ticks; drive +0.05 for 400t, release 200t) — ch4 -0.08→-1.07.
  45. Reset to fresh initial conditions (−200 ticks).
  46. Drive → release (1,000 ticks; drive +0.10 for 300t, release 700t).
  47. Ended exploration → received 16 prediction contracts.
  48. ✗ free run rejected: exploration is over; reply with the answers object.
  49. Submitted 16 contract answers.
  50. Submitted 16 contract answers.
  51. Submitted an executable theory (17,360 chars).

Agent-written files (its instruments & theories)

app/model.md (2,459 chars)
# FINAL EMPIRICAL MODEL

## Architecture
Single relaxation oscillator (spike ~25 ticks wide) drives all 36 live sensors via fixed
per-channel waveform templates (phase-locked, various lags/signs). Sensors 2,16,17,39 are DEAD:
constants 0.177, -0.085, 0.126, 0.071 with noise sd~0.045.
Inputs inject NO DC into sensors (<=0.05 at |u|<=0.6). Inputs act only on the oscillator.

## Period logic (empirical)
- Fresh draw: SLOW branch, period 81+-1 (6/6 draws). Phase random.
- Drive condition (any of): u0 > ~0.4; |u1| > ~0.4; u_p > ~0.4 for p in 2..7 (negatives inert
  for p=0,2,4,6 (tested); assume same for 3,5,7).
- Period under drive: >=0.45 -> 39-41 (transition ~150-200 ticks: first intervals 60-80,50,42,...).
  u=0.4 -> ~46 irregular. <=0.3 -> 81 (NO effect at all: weak pushes invisible).
- Release after drive of duration D (not latched):
  D~300: period ~70-73 for 700+ ticks, slowly -> 81. Amplitude full.
  D~600: period ~40-55 lingering, reduced spike amplitude (~60% of full) recovering ~500 ticks.
- LATCH (permanent fast, period 39-40 at u=0, full amplitude):
  * u0 >= ~0.9 for >=150 ticks (u0=0.8 x700 does NOT latch)
  * OR cumulative fast-driving ~800-900+ ticks (900 latched twice; 600-700 didn't)
  * repeated onsets (3x60-tick pulses port1 @1.0 within ~600 ticks) latched once.
  Latch survives >=2000 ticks and all-ports -1 x600. No un-latch found.

## Templates (period-folded waveforms)
- fast (39 ticks): /app/templates_fast.npy + /app/stats_fast.json (tavg, lo20/hi20 = min/max of
  20-tick rolling mean, sd_cycle=sd of 200-tick window (5.1 cycles), pk/tr).
- slow (81 ticks): /app/templates_slow.npy + /app/stats_slow.json (also sd200lo/hi for 200-tick window).
- Spike event shape identical between branches; slow = longer flat inter-spike baseline.
- Waveform amplitude under strong drive == latched amplitude == fresh amplitude (full),
  EXCEPT transient shrink after 600+ tick drives on release.

## Prediction recipes
- mean(final 20 ticks): midpoint = tavg(branch); interval = [lo20, hi20] (phase unknown, no reset).
  Dead channels: value +- 0.05.
- sd(200-tick window): fast: sd_cycle_fast +-10%; slow: sd200lo..sd200hi +-10%. Dead: 0.045-0.05.
- count upward crossings (200-tick window): window/period; spikes cross once per period
  (threshold-dependent: use template + threshold from contract).
- Periods: slow 81, driven(>=0.45) 40, driven(0.4) 46, post-release-300 72, latched 39.5.

## Budget: ~163k at ready() time.
app/notes.md (2,090 chars)
# Physim system notes

## Interface
8 inputs, 40 sensors, obs window = final 20 ticks. Budget 200k. reset=200.

## Core structure
- Single global relaxation oscillator (spiking). All sensors = mix of oscillator waveform + DC(inputs) + noise (sd ~0.05).
- Baseline (u=0): period ~80 ticks. Spike shape on ch4: flat ~-0.5, ramp up to +2.5 over ~10 ticks, crash to -1.5, slow recovery to -0.5 (~40 ticks), flat.
- Spike width ~20-25 ticks total. Quiet 20-tick window between spikes has sd~0.05 => "silent-looking" tails are just inter-spike windows. No true bistability observed.
- Oscillator never stopped in any condition tried so far (u0=-1: period ~82).

## Period vs input (ch4 spike counting)
- u=0: ~80
- u0=+1: ~39 ; u0=+0.8: ~41 ; u0=+0.4: ~44 ; u0=-1: ~82 (negative barely slows)
- u1=+0.8: ~39 ; u2=+0.8: ~39 ; u6=+0.8: ~40 (transient from 80->40 over ~150-200 ticks)
- Frequency saturates ~period 39-40 for strong positive drive on ANY port tried.
- Period adaptation timescale after step: ~150 ticks (drifts to asymptote).
- Spike amplitude on ch4 fluctuates/declines slowly under sustained drive (ports 1,2): peaks 2.5 -> ~1.5-1.8 late in 520-tick runs. Slow amplitude adaptation?

## Channels
- Pure-noise/constant channels (sd~0.04 always, mean const): 2 (~0.18), 16 (~-0.08), 17 (~0.12), 39 (~0.07)
- Strong oscillator channels: 4, 26 (downward spikes), 30, 37, 14, 5, 3, 0, 18, 25, 36, ...
- Nearly every channel oscillates when amplitude is high (strong drive).

## DC tail means (phase-contaminated for osc channels) per port at +0.8
port0: ch14 -1.10 (base 0.21), ch27 -1.27 (base -0.75), ch13 -0.69, ch20 0.67
port1: ch18 1.18 (base 0.55), ch20 0.96, ch28 0.66, ch35 -0.56, ch13 -0.64
port3 ~= port7 responses (very similar means across all channels)
port6: suppress-look was window artifact.

## Open questions
- Frequency vs each port at small levels (+-0.3): which ports drive freq?
- DC gain map: random-input regression
- amplitude adaptation dynamics
- phase reset by steps (predictability of final-20-tick window phase)
- waveform per channel (weights/phase lags)
app/.vf-claude/c931d3dac0cc4be593743296dc55d04a/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-14T13:49:49.415Z",
  "machineID": "39825d948d47b3e468cb6b2b9a3e17fc128093aeca53d5b566bded509e051575",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "ac5ac4c1832b40910ec7c75ec623e66b0c2dc612004af7bfa56c902e79c07fb8"
}
app/analyze_fast.py (1,750 chars)
import numpy as np, json
from data_fast_wave import BATCHES

P = 40  # fast period estimate; refine by autocorr of concatenated ch4? use per-batch alignment instead

# Estimate period from B1 ch4 via spike peak spacing
def peaks(x, thr=1.0):
    x = np.asarray(x); idx=[]
    for i in range(1,len(x)-1):
        if x[i]>thr and x[i]>=x[i-1] and x[i]>=x[i+1]: idx.append(i)
    return idx

for b in BATCHES:
    print('peaks ch4:', peaks(b[4]))

# Align batches: find shift s such that batch ch4 matches reference template.
# Build reference from B1 ch4: assume period P=40, fold.
ref = np.asarray(BATCHES[0][4])

def fold(x, P, phase0=0.0):
    # returns template on grid 0..P-1 by averaging folded samples
    x = np.asarray(x); n=len(x)
    grid = np.zeros(P); cnt=np.zeros(P)
    for i in range(n):
        k = int(round((i+phase0))) % P
        grid[k]+=x[i]; cnt[k]+=1
    return grid/np.maximum(cnt,1)

# Determine best P by minimizing fold residual of ch4 across all batches jointly
best=None
for Ptry in np.arange(38.0, 42.01, 0.25):
    tot=0
    for b in BATCHES:
        x=np.asarray(b[4]); n=len(x)
        # fold with fractional period: phase_i = (i mod Ptry)/Ptry * 40 bins
        bins=40
        acc=np.zeros(bins); cnt=np.zeros(bins)
        ph=(np.arange(n)%Ptry)/Ptry*bins
        k=np.floor(ph).astype(int)%bins
        for i in range(n): acc[k[i]]+=x[i]; cnt[i%1]+=0
        for i in range(n): pass
        # residual: variance within bins
        res=0
        vals={}
        for i in range(n): vals.setdefault(k[i],[]).append(x[i])
        for kk,vv in vals.items():
            vv=np.asarray(vv); res+=((vv-vv.mean())**2).sum()
        tot+=res
    if best is None or tot<best[1]: best=(Ptry,tot)
print('best period:', best)
app/data_fast_wave.py (19,136 chars)
# Fast-branch (latched) waveform library at u=0, period ~40. stride 1, 60 ticks per batch.
# Each batch: dict channel -> list of 60 samples. ch4 present in every batch as phase reference.
B1 = {
 4:[-1.56,-1.443,-1.306,-1.38,-1.285,-1.262,-1.241,-1.139,-1.044,-1.056,-1.048,-0.919,-0.948,-0.85,-0.82,-0.659,-0.763,-0.603,-0.631,-0.485,-0.266,0.152,0.51,1.076,1.651,2.19,2.427,2.578,2.469,2.238,1.849,1.291,0.619,-0.117,-0.64,-1.152,-1.523,-1.442,-1.506,-1.519,-1.456,-1.424,-1.301,-1.321,-1.222,-1.133,-1.079,-1.046,-0.982,-1.043,-1.0,-0.896,-0.829,-0.825,-0.778,-0.676,-0.615,-0.579,-0.52,-0.217],
 0:[-0.916,-1.369,-2.017,-2.216,-2.237,-2.485,-2.185,-1.853,-1.287,-0.687,0.124,0.729,1.13,1.44,1.476,1.517,1.502,1.512,1.36,1.404,1.223,1.245,1.187,1.171,1.086,1.119,0.982,1.012,0.925,0.929,0.847,0.742,0.796,0.657,0.67,0.55,0.431,0.054,-0.381,-0.827,-1.334,-1.888,-2.241,-2.406,-2.414,-2.221,-1.974,-1.371,-0.718,-0.013,0.688,1.116,1.589,1.545,1.561,1.551,1.51,1.452,1.359,1.403],
 1:[-1.799,-1.625,-1.613,-1.537,-1.508,-1.538,-1.462,-1.412,-1.433,-1.244,-1.261,-1.17,-1.151,-1.159,-1.074,-1.096,-0.884,-0.922,-0.79,-0.86,-0.748,-0.627,-0.329,0.235,0.675,1.251,1.719,1.957,1.967,2.067,1.902,1.581,1.045,0.355,-0.255,-0.82,-1.3,-1.529,-1.712,-1.763,-1.686,-1.571,-1.605,-1.563,-1.595,-1.496,-1.386,-1.323,-1.311,-1.309,-1.077,-1.179,-1.151,-1.06,-1.004,-1.023,-0.916,-0.93,-0.844,-0.748],
 2:[0.107,0.218,0.208,0.166,0.237,0.269,0.109,0.148,0.226,0.177,0.133,0.223,0.261,0.211,0.196,0.284,0.201,0.172,0.253,0.174,0.311,0.128,0.29,0.114,0.172,0.167,0.225,0.221,0.181,0.165,0.118,0.149,0.127,0.189,0.138,0.204,0.208,0.173,0.176,0.141,0.226,0.144,0.195,0.086,0.075,0.275,0.1,0.136,0.118,0.161,0.196,0.059,0.158,0.151,0.208,0.064,0.167,0.106,0.19,0.241],
 3:[-0.503,-0.556,-0.497,-0.473,-0.447,-0.346,-0.376,-0.368,-0.382,-0.289,-0.407,-0.301,-0.209,-0.094,-0.25,-0.262,-0.193,-0.168,-0.186,-0.144,-0.133,-0.033,0.107,0.252,0.384,0.629,0.769,1.039,1.089,1.069,1.141,0.986,0.863,0.652,0.361,0.133,-0.127,-0.336,-0.493,-0.482,-0.504,-0.564,-0.428,-0.413,-0.367,-0.387,-0.389,-0.267,-0.349,-0.298,-0.236,-0.203,-0.211,-0.261,-0.233,-0.273,-0.187,-0.176,-0.155,-0.079],
 5:[-0.775,-1.003,-0.994,-1.098,-0.985,-0.966,-0.972,-0.762,-0.856,-0.826,-0.814,-0.735,-0.669,-0.74,-0.665,-0.637,-0.589,-0.538,-0.607,-0.538,-0.537,-0.4,-0.377,-0.388,-0.171,0.03,0.473,0.759,1.116,1.386,1.646,1.749,1.538,1.466,1.141,0.799,0.272,-0.132,-0.628,-0.764,-1.0,-1.102,-1.047,-1.068,-0.949,-1.009,-0.901,-0.878,-0.836,-0.725,-0.826,-0.656,-0.803,-0.671,-0.642,-0.631,-0.612,-0.615,-0.571,-0.493],
}
B2 = {
 4:[0.231,0.514,1.114,1.61,2.19,2.413,2.548,2.5,2.26,1.889,1.317,0.692,-0.082,-0.781,-1.127,-1.444,-1.553,-1.437,-1.424,-1.349,-1.47,-1.346,-1.366,-1.244,-1.24,-1.141,-1.049,-1.1,-1.035,-1.015,-0.948,-0.947,-0.853,-0.757,-0.73,-0.715,-0.637,-0.563,-0.231,0.049,0.588,0.99,1.672,1.996,2.336,2.583,2.501,2.296,1.928,1.382,0.723,0.129,-0.607,-1.153,-1.291,-1.572,-1.593,-1.497,-1.408,-1.452],
 6:[-0.17,0.122,0.499,0.933,1.174,1.278,1.424,1.384,1.251,0.966,0.7,0.22,-0.276,-0.665,-0.97,-1.044,-1.075,-1.114,-1.041,-1.002,-1.07,-0.922,-0.879,-0.882,-0.892,-0.815,-0.837,-0.817,-0.834,-0.72,-0.707,-0.743,-0.757,-0.595,-0.697,-0.531,-0.583,-0.55,-0.45,-0.25,0.222,0.387,0.826,1.165,1.349,1.467,1.318,1.253,1.047,0.72,0.332,-0.178,-0.624,-0.927,-1.15,-1.072,-1.16,-1.12,-1.076,-1.039],
 7:[-1.178,-1.41,-1.528,-1.48,-1.501,-1.444,-1.261,-1.27,-1.335,-1.135,-1.199,-1.137,-1.147,-1.118,-1.024,-1.013,-0.866,-0.895,-0.999,-0.849,-0.865,-0.802,-0.808,-0.793,-0.625,-0.371,0.043,0.397,0.821,1.217,1.571,1.785,1.801,1.67,1.46,0.951,0.446,-0.085,-0.662,-1.114,-1.32,-1.453,-1.525,-1.422,-1.39,-1.358,-1.257,-1.286,-1.12,-1.195,-1.062,-1.144,-1.026,-1.07,-0.97,-0.915,-0.915,-0.852,-0.862,-0.797],
 8:[0.86,0.519,0.223,-0.221,-0.554,-0.683,-0.739,-0.85,-0.804,-0.775,-0.683,-0.737,-0.688,-0.7,-0.645,-0.629,-0.623,-0.586,-0.587,-0.526,-0.483,-0.52,-0.404,-0.511,-0.432,-0.426,-0.367,-0.325,-0.23,-0.052,0.163,0.338,0.645,0.927,1.121,1.346,1.275,1.168,1.061,0.881,0.467,0.16,-0.194,-0.607,-0.68,-0.804,-0.769,-0.86,-0.796,-0.763,-0.667,-0.774,-0.693,-0.628,-0.596,-0.681,-0.603,-0.626,-0.517,-0.474],
 9:[0.49,0.492,0.413,0.436,0.409,0.358,0.309,0.333,0.279,0.236,0.233,0.206,0.241,0.307,0.159,0.135,0.128,-0.024,-0.004,-0.251,-0.656,-0.863,-1.086,-1.286,-1.473,-1.445,-1.345,-1.229,-0.908,-0.477,-0.24,0.029,0.236,0.562,0.62,0.549,0.641,0.563,0.581,0.438,0.486,0.525,0.44,0.415,0.351,0.392,0.285,0.239,0.375,0.259,0.356,0.138,0.283,0.103,0.106,0.181,-0.022,-0.059,-0.264,-0.612],
 10:[0.54,0.939,1.25,1.586,1.657,1.711,1.498,1.226,0.983,0.534,0.079,-0.413,-0.87,-1.123,-1.185,-1.271,-1.172,-1.16,-1.136,-0.996,-1.005,-1.082,-1.087,-0.98,-0.895,-0.957,-0.853,-0.829,-0.842,-0.735,-0.771,-0.714,-0.693,-0.624,-0.547,-0.484,-0.347,-0.175,0.199,0.585,0.93,1.272,1.527,1.736,1.73,1.618,1.314,0.927,0.476,0.062,-0.309,-0.899,-1.157,-1.167,-1.206,-1.202,-1.136,-1.238,-1.163,-1.099],
}
B3 = {
 4:[-1.291,-1.29,-1.224,-1.155,-1.088,-1.054,-1.059,-0.937,-0.981,-0.887,-0.927,-0.802,-0.778,-0.739,-0.683,-0.576,-0.561,-0.358,-0.057,0.472,1.046,1.578,2.013,2.375,2.576,2.53,2.439,2.047,1.379,0.717,0.163,-0.505,-0.993,-1.349,-1.521,-1.583,-1.46,-1.46,-1.4,-1.274,-1.265,-1.216,-1.174,-1.173,-1.109,-1.059,-1.003,-0.985,-0.883,-0.848,-0.798,-0.792,-0.723,-0.704,-0.676,-0.581,-0.386,-0.071,0.335,0.976],
 11:[-1.325,-1.226,-1.148,-1.087,-1.044,-1.066,-0.977,-0.926,-0.975,-0.811,-0.842,-0.773,-0.787,-0.708,-0.624,-0.621,-0.544,-0.474,-0.581,-0.488,-0.37,-0.383,-0.048,0.267,0.752,1.056,1.617,2.139,2.283,2.315,2.261,2.098,1.67,1.19,0.49,-0.002,-0.606,-1.031,-1.133,-1.217,-1.284,-1.143,-1.081,-1.151,-1.009,-0.99,-1.037,-0.86,-0.963,-0.767,-0.846,-0.661,-0.706,-0.624,-0.595,-0.535,-0.49,-0.545,-0.523,-0.441],
 12:[-0.492,-0.566,-0.481,-0.534,-0.442,-0.4,-0.379,-0.454,-0.438,-0.264,-0.356,-0.276,-0.155,-0.009,0.203,0.599,0.891,1.244,1.426,1.559,1.537,1.472,1.243,1.055,0.544,0.083,-0.232,-0.559,-0.655,-0.771,-0.843,-0.785,-0.899,-0.797,-0.764,-0.775,-0.66,-0.63,-0.65,-0.577,-0.534,-0.562,-0.42,-0.486,-0.497,-0.493,-0.367,-0.433,-0.353,-0.306,-0.323,-0.181,0.049,0.233,0.603,0.806,1.129,1.362,1.516,1.499],
 13:[0.756,0.866,0.952,0.925,0.826,0.788,0.473,0.223,-0.172,-0.464,-0.774,-0.89,-0.945,-1.007,-0.977,-0.943,-0.856,-0.77,-0.848,-0.883,-0.707,-0.665,-0.733,-0.683,-0.749,-0.633,-0.653,-0.582,-0.511,-0.556,-0.521,-0.602,-0.5,-0.506,-0.466,-0.29,-0.023,0.123,0.427,0.67,0.881,0.968,0.944,0.843,0.744,0.494,0.14,-0.157,-0.494,-0.758,-0.837,-0.967,-0.926,-0.921,-0.855,-0.853,-0.836,-0.835,-0.744,-0.7],
 14:[-0.43,-0.031,0.184,0.464,0.882,1.179,1.389,1.463,1.274,1.067,0.876,0.519,-0.011,-0.333,-0.764,-1.042,-1.313,-1.393,-1.449,-1.477,-1.424,-1.364,-1.365,-1.23,-1.273,-1.166,-1.182,-1.17,-1.091,-1.028,-1.048,-0.995,-0.998,-0.864,-0.954,-0.814,-0.737,-0.696,-0.584,-0.319,-0.076,0.098,0.447,0.816,1.108,1.273,1.357,1.383,1.179,0.948,0.523,0.161,-0.304,-0.739,-1.137,-1.296,-1.451,-1.429,-1.435,-1.418],
 15:[0.583,0.557,0.615,0.534,0.504,0.438,0.266,-0.07,-0.323,-0.427,-0.65,-0.819,-0.826,-0.716,-0.592,-0.391,-0.155,0.156,0.521,0.767,0.944,0.924,1.033,0.992,1.026,0.937,0.874,0.926,0.958,0.889,0.906,0.762,0.815,0.821,0.74,0.729,0.714,0.682,0.733,0.594,0.761,0.668,0.545,0.59,0.403,0.296,0.032,-0.187,-0.414,-0.691,-0.807,-0.886,-0.826,-0.7,-0.482,-0.176,0.172,0.48,0.736,1.027],
}
B4 = {
 4:[1.429,1.879,2.25,2.521,2.578,2.401,2.054,1.539,0.881,0.244,-0.47,-1.018,-1.286,-1.554,-1.473,-1.488,-1.415,-1.339,-1.244,-1.265,-1.253,-1.201,-1.239,-1.091,-1.032,-1.093,-0.979,-0.763,-0.913,-0.791,-0.781,-0.794,-0.692,-0.743,-0.495,-0.469,-0.212,0.303,0.981,1.471,1.9,2.268,2.451,2.505,2.423,2.086,1.599,0.973,0.202,-0.388,-0.913,-1.319,-1.526,-1.616,-1.487,-1.473,-1.445,-1.394,-1.311,-1.353],
 16:[-0.058,-0.099,-0.165,-0.042,0.018,-0.028,-0.033,-0.028,-0.045,-0.112,-0.17,-0.033,-0.103,-0.117,0.002,-0.006,-0.046,-0.158,-0.098,0.016,-0.046,-0.173,-0.111,-0.003,-0.163,-0.091,-0.109,-0.108,-0.1,-0.086,-0.125,-0.085,-0.093,-0.082,-0.121,-0.094,-0.079,-0.129,-0.027,-0.105,-0.137,-0.046,-0.026,-0.103,-0.103,-0.01,-0.13,-0.167,-0.14,0.013,-0.023,-0.005,-0.147,-0.107,-0.014,-0.113,-0.167,-0.051,-0.067,-0.093],
 17:[0.21,0.101,0.109,0.131,0.078,0.141,0.129,0.053,0.105,0.102,0.097,0.165,0.13,0.178,0.073,0.056,0.156,0.171,0.123,0.108,0.152,0.175,0.159,0.212,0.136,0.094,0.147,0.074,0.144,0.161,0.054,0.139,0.006,0.046,0.226,0.134,0.193,0.165,0.159,0.052,0.106,0.113,0.103,0.122,0.038,0.098,-0.011,0.137,0.037,0.241,0.195,0.208,0.05,0.174,0.173,0.212,0.067,0.099,0.099,0.095],
 18:[1.551,1.541,1.467,1.449,1.353,1.287,1.232,1.28,1.149,1.14,1.037,0.948,0.957,0.842,0.931,0.881,0.765,0.77,0.791,0.646,0.736,0.58,0.453,0.069,-0.465,-0.91,-1.52,-1.922,-2.229,-2.458,-2.383,-2.195,-1.952,-1.354,-0.627,0.046,0.636,1.139,1.45,1.468,1.521,1.486,1.416,1.349,1.317,1.279,1.192,1.215,1.064,1.05,1.063,0.874,0.98,0.853,0.863,0.712,0.819,0.651,0.677,0.694],
 19:[0.466,0.631,0.972,1.144,1.214,1.32,1.154,1.005,0.885,0.611,0.266,-0.099,-0.355,-0.536,-0.828,-0.731,-0.722,-0.784,-0.765,-0.693,-0.677,-0.739,-0.572,-0.675,-0.575,-0.606,-0.498,-0.53,-0.508,-0.498,-0.49,-0.4,-0.385,-0.368,-0.391,-0.203,-0.184,0.048,0.103,0.366,0.614,0.974,1.208,1.284,1.238,1.2,1.063,0.846,0.456,0.188,-0.145,-0.343,-0.705,-0.656,-0.852,-0.672,-0.736,-0.694,-0.785,-0.765],
 20:[-1.841,-1.422,-1.068,-0.522,0.012,0.57,1.006,1.267,1.4,1.425,1.36,1.384,1.356,1.37,1.307,1.232,1.225,1.037,1.193,1.019,0.955,1.056,0.812,0.843,0.828,0.779,0.776,0.732,0.67,0.626,0.499,0.331,-0.135,-0.62,-1.065,-1.41,-1.787,-1.853,-1.954,-1.879,-1.585,-1.163,-0.571,0.017,0.456,0.936,1.244,1.397,1.445,1.384,1.289,1.29,1.355,1.229,1.183,1.158,1.067,1.115,0.993,0.946],
}
B5 = {
 4:[-1.152,-1.145,-1.098,-1.007,-1.096,-1.001,-0.933,-0.921,-0.883,-0.825,-0.718,-0.603,-0.541,-0.459,-0.371,-0.06,0.549,1.36,2.063,2.487,2.654,2.613,2.504,2.354,1.864,1.352,0.386,-0.598,-1.277,-1.489,-1.591,-1.558,-1.531,-1.472,-1.36,-1.351,-1.263,-1.215,-1.152,-1.172,-1.088,-1.054,-1.019,-0.93,-0.932,-0.796,-0.746,-0.796,-0.82,-0.686,-0.581,-0.584,-0.512,-0.319,-0.084,0.246,0.924,1.393,1.925,2.247],
 21:[-0.04,0.263,0.536,0.94,1.151,1.481,1.585,1.651,1.458,1.219,0.836,0.344,-0.084,-0.469,-0.89,-1.036,-1.115,-1.106,-1.052,-1.073,-1.006,-0.975,-0.841,-0.935,-0.827,-0.849,-0.818,-0.734,-0.671,-0.679,-0.639,-0.626,-0.612,-0.563,-0.495,-0.423,-0.469,-0.407,-0.306,-0.133,0.177,0.581,0.885,1.188,1.403,1.587,1.521,1.448,1.23,0.87,0.458,0.054,-0.422,-0.81,-1.021,-1.121,-1.127,-1.053,-1.03,-1.104],
 22:[-0.518,-0.535,-0.443,-0.451,-0.467,-0.31,-0.097,0.155,0.547,0.926,1.293,1.718,1.862,1.919,1.874,1.636,1.256,0.783,0.375,-0.18,-0.647,-0.969,-1.103,-1.15,-1.062,-1.012,-0.983,-0.977,-0.906,-0.89,-0.843,-0.837,-0.798,-0.746,-0.719,-0.702,-0.591,-0.591,-0.555,-0.517,-0.438,-0.429,-0.406,-0.474,-0.401,-0.121,0.104,0.485,0.86,1.418,1.695,1.808,1.87,1.765,1.582,1.324,0.947,0.403,-0.049,-0.55],
 23:[-1.036,-1.142,-1.109,-1.123,-0.944,-0.644,-0.483,-0.157,0.085,0.337,0.603,0.648,0.606,0.752,0.615,0.672,0.576,0.59,0.641,0.656,0.454,0.488,0.413,0.463,0.453,0.403,0.479,0.346,0.347,0.316,0.259,0.34,0.162,0.095,-0.052,-0.214,-0.361,-0.652,-0.826,-1.11,-1.09,-1.185,-1.144,-1.022,-0.644,-0.374,-0.119,0.087,0.298,0.561,0.653,0.727,0.705,0.643,0.711,0.644,0.628,0.636,0.542,0.535],
 24:[0.671,1.184,1.56,1.881,2.005,1.997,1.919,1.627,1.233,0.8,0.24,-0.257,-0.693,-1.018,-1.203,-1.242,-1.131,-1.138,-1.135,-0.936,-0.93,-0.95,-0.945,-0.842,-0.731,-0.69,-0.739,-0.674,-0.646,-0.62,-0.639,-0.605,-0.554,-0.417,-0.509,-0.381,-0.205,-0.032,0.327,0.651,1.135,1.561,1.908,1.991,2.067,1.903,1.583,1.315,0.687,0.264,-0.212,-0.719,-0.988,-1.14,-1.226,-1.159,-1.096,-1.048,-0.961,-0.938],
 25:[0.551,0.638,0.565,0.522,0.553,0.497,0.489,0.392,0.272,0.323,0.287,0.268,0.315,0.243,0.253,0.184,0.242,0.118,0.03,-0.234,-0.467,-0.826,-1.217,-1.466,-1.662,-1.686,-1.662,-1.618,-1.397,-1.004,-0.687,-0.18,0.126,0.507,0.656,0.732,0.72,0.722,0.63,0.626,0.592,0.47,0.529,0.448,0.526,0.387,0.393,0.376,0.376,0.308,0.326,0.308,0.272,0.26,0.19,0.152,0.029,-0.105,-0.306,-0.469],
}
B6 = {
 4:[2.571,2.576,2.543,2.207,1.72,1.072,0.29,-0.312,-0.911,-1.282,-1.496,-1.514,-1.548,-1.474,-1.455,-1.307,-1.359,-1.254,-1.166,-1.161,-1.119,-1.096,-0.968,-0.891,-0.902,-0.861,-0.865,-0.764,-0.742,-0.68,-0.621,-0.567,-0.409,-0.184,0.312,1.003,1.774,2.311,2.618,2.716,2.582,2.451,2.193,1.598,0.853,-0.087,-0.972,-1.485,-1.61,-1.557,-1.673,-1.532,-1.497,-1.346,-1.351,-1.178,-1.265,-1.183,-1.144,-1.087],
 26:[0.115,-0.091,-0.478,-0.821,-1.317,-1.802,-2.226,-2.527,-2.784,-2.616,-2.431,-2.003,-1.474,-1.013,-0.309,0.202,0.682,1.111,1.261,1.241,1.222,1.265,1.154,1.073,1.081,0.914,1.029,0.812,0.753,0.823,0.75,0.644,0.648,0.59,0.539,0.412,0.385,0.492,0.281,0.228,-0.048,-0.34,-0.833,-1.212,-1.827,-2.21,-2.514,-2.654,-2.641,-2.565,-2.088,-1.605,-1.096,-0.422,0.086,0.72,1.06,1.128,1.209,1.179],
 27:[-1.584,-1.467,-1.381,-1.353,-1.267,-1.317,-1.275,-1.197,-1.171,-1.149,-1.05,-1.086,-1.052,-0.945,-0.849,-0.862,-0.831,-0.792,-0.718,-0.603,-0.437,-0.115,0.323,0.914,1.486,1.767,1.986,1.941,1.879,1.598,1.145,0.488,-0.064,-0.686,-1.358,-1.697,-1.645,-1.555,-1.604,-1.514,-1.5,-1.448,-1.369,-1.278,-1.208,-1.22,-1.346,-1.217,-1.121,-1.107,-1.016,-1.049,-0.913,-1.04,-0.969,-0.807,-0.816,-0.776,-0.669,-0.476],
 28:[-1.546,-1.4,-1.031,-0.593,-0.124,0.237,0.628,0.862,0.954,0.97,0.912,0.909,0.89,0.888,0.812,0.801,0.807,0.739,0.703,0.658,0.623,0.615,0.631,0.55,0.601,0.486,0.465,0.512,0.399,0.34,0.348,0.137,-0.088,-0.46,-0.773,-1.274,-1.427,-1.564,-1.659,-1.534,-1.338,-1.092,-0.676,-0.219,0.288,0.543,0.821,0.843,0.999,0.969,0.896,0.864,0.816,0.789,0.846,0.81,0.764,0.62,0.714,0.638],
 29:[0.404,0.448,0.362,0.307,0.254,0.119,0.085,-0.074,-0.362,-0.713,-0.981,-1.319,-1.519,-1.536,-1.49,-1.409,-1.282,-0.908,-0.477,-0.171,0.373,0.644,0.751,0.736,0.827,0.764,0.783,0.659,0.678,0.653,0.558,0.57,0.464,0.547,0.493,0.315,0.458,0.401,0.432,0.425,0.36,0.221,0.287,0.214,0.12,0.06,-0.12,-0.286,-0.644,-1.117,-1.337,-1.512,-1.567,-1.443,-1.46,-1.149,-0.85,-0.432,-0.024,0.276],
 30:[-0.66,-0.612,-0.514,-0.472,-0.254,0.083,0.466,1.083,1.499,1.886,2.094,2.284,2.02,1.773,1.401,0.783,0.167,-0.546,-1.118,-1.368,-1.453,-1.476,-1.422,-1.312,-1.373,-1.237,-1.189,-1.221,-1.095,-1.051,-1.075,-1.036,-0.928,-0.971,-0.901,-0.826,-0.845,-0.695,-0.776,-0.592,-0.409,-0.215,0.153,0.614,1.177,1.648,1.966,2.0,2.075,1.844,1.438,1.049,0.426,-0.215,-0.736,-1.107,-1.263,-1.415,-1.421,-1.4],
}
B7 = {
 4:[-1.124,-1.016,-1.009,-0.952,-0.841,-0.854,-0.787,-0.789,-0.752,-0.634,-0.568,-0.488,-0.311,0.269,0.727,1.152,1.746,2.199,2.516,2.623,2.465,2.278,1.894,1.192,0.489,-0.174,-0.685,-1.286,-1.549,-1.505,-1.583,-1.428,-1.417,-1.5,-1.254,-1.288,-1.172,-1.172,-1.206,-1.142,-1.069,-0.945,-0.912,-0.866,-0.936,-0.872,-0.831,-0.763,-0.713,-0.694,-0.49,-0.311,0.081,0.483,1.197,1.795,2.358,2.579,2.665,2.545],
 31:[-0.643,-0.542,-0.524,-0.471,-0.508,-0.511,-0.401,-0.497,-0.269,-0.127,0.176,0.343,0.542,0.673,0.847,0.896,0.886,0.737,0.64,0.282,0.011,-0.315,-0.515,-0.747,-0.818,-0.825,-0.865,-0.839,-0.796,-0.717,-0.67,-0.677,-0.633,-0.734,-0.691,-0.611,-0.703,-0.683,-0.535,-0.525,-0.569,-0.518,-0.547,-0.502,-0.435,-0.393,-0.422,-0.28,-0.122,0.063,0.338,0.542,0.74,0.854,0.888,0.79,0.758,0.59,0.265,0.028],
 32:[0.33,0.199,0.191,0.18,-0.102,-0.238,-0.435,-0.666,-0.918,-1.1,-1.143,-1.124,-1.106,-0.888,-0.726,-0.389,-0.096,0.228,0.477,0.651,0.647,0.675,0.532,0.726,0.635,0.532,0.591,0.493,0.51,0.444,0.502,0.395,0.443,0.382,0.423,0.346,0.454,0.34,0.372,0.265,0.221,0.226,0.059,0.044,-0.204,-0.407,-0.649,-0.963,-1.004,-1.144,-1.099,-1.074,-0.79,-0.621,-0.397,-0.08,0.225,0.43,0.588,0.654],
 33:[-1.807,-1.605,-1.455,-0.86,-0.366,0.203,0.76,0.945,1.331,1.411,1.402,1.331,1.275,1.244,1.278,1.156,1.211,1.113,1.084,1.054,0.918,0.922,0.895,0.912,0.819,0.819,0.801,0.741,0.586,0.719,0.583,0.488,0.277,-0.071,-0.593,-0.916,-1.266,-1.575,-1.817,-1.695,-1.639,-1.391,-0.93,-0.47,0.161,0.664,1.081,1.289,1.359,1.312,1.249,1.319,1.27,1.349,1.146,1.126,1.174,1.025,1.071,0.935],
 34:[0.822,0.788,0.683,0.722,0.721,0.649,0.571,0.641,0.52,0.461,0.427,0.418,0.345,0.356,0.421,0.258,0.147,-0.092,-0.455,-0.888,-1.321,-1.79,-2.075,-2.215,-2.094,-1.93,-1.829,-1.329,-0.805,-0.216,0.32,0.696,0.972,1.031,1.017,1.049,0.922,0.976,0.964,0.916,0.893,0.807,0.763,0.807,0.64,0.596,0.597,0.539,0.644,0.431,0.427,0.377,0.414,0.412,0.344,0.225,-0.021,-0.468,-0.942,-1.514],
 35:[-0.505,-0.469,-0.517,-0.566,-0.412,-0.494,-0.359,-0.41,-0.409,-0.33,-0.106,0.026,0.113,0.375,0.732,0.928,1.085,1.174,1.169,1.063,0.827,0.607,0.342,0.036,-0.327,-0.584,-0.73,-0.786,-0.821,-0.724,-0.683,-0.882,-0.774,-0.606,-0.658,-0.697,-0.665,-0.602,-0.571,-0.487,-0.508,-0.518,-0.51,-0.391,-0.369,-0.408,-0.306,-0.352,-0.341,-0.253,-0.107,0.208,0.342,0.688,0.948,1.199,1.138,1.236,1.107,0.926],
}
B8 = {
 4:[2.357,1.826,1.28,0.648,-0.235,-0.869,-1.319,-1.616,-1.48,-1.557,-1.512,-1.483,-1.292,-1.294,-1.189,-1.381,-1.146,-1.134,-1.039,-0.94,-1.039,-0.814,-0.866,-0.88,-0.805,-0.8,-0.725,-0.679,-0.794,-0.504,-0.268,0.024,0.586,1.11,1.67,2.118,2.412,2.592,2.562,2.413,1.871,1.381,0.74,0.06,-0.618,-1.082,-1.466,-1.562,-1.614,-1.433,-1.447,-1.469,-1.305,-1.368,-1.219,-1.139,-1.153,-1.009,-1.034,-0.981],
 36:[-0.49,-0.21,0.005,0.504,0.855,1.224,1.469,1.644,1.79,1.667,1.56,1.178,0.646,0.183,-0.398,-0.851,-1.12,-1.216,-1.206,-1.278,-1.196,-1.126,-1.181,-1.084,-1.075,-1.029,-0.878,-0.963,-0.895,-0.92,-0.825,-0.826,-0.774,-0.739,-0.742,-0.759,-0.773,-0.597,-0.619,-0.366,-0.353,0.059,0.329,0.77,1.141,1.613,1.732,1.709,1.695,1.393,1.151,0.6,0.231,-0.332,-0.739,-1.13,-1.317,-1.362,-1.202,-1.194],
 37:[-0.662,-1.234,-1.51,-1.566,-1.634,-1.64,-1.559,-1.581,-1.497,-1.465,-1.434,-1.323,-1.249,-1.252,-1.209,-1.183,-1.059,-1.143,-0.975,-0.951,-0.916,-0.889,-0.825,-0.786,-0.686,-0.396,0.045,0.362,0.864,1.3,1.738,2.106,2.287,2.238,2.105,1.73,1.2,0.625,-0.06,-0.654,-1.115,-1.551,-1.592,-1.635,-1.622,-1.65,-1.537,-1.615,-1.451,-1.38,-1.376,-1.39,-1.197,-1.198,-1.158,-1.157,-1.036,-0.971,-0.912,-0.934],
 38:[0.439,0.337,0.32,0.05,-0.354,-0.721,-1.248,-1.681,-1.935,-2.034,-2.109,-2.051,-1.731,-1.262,-0.836,-0.209,0.408,0.813,1.09,1.21,1.315,1.149,1.126,1.185,1.095,1.046,1.038,0.994,0.883,0.786,0.909,0.822,0.774,0.826,0.73,0.687,0.619,0.531,0.547,0.441,0.487,0.343,0.121,-0.238,-0.741,-1.16,-1.644,-1.953,-2.135,-2.097,-1.955,-1.746,-1.317,-0.814,-0.271,0.263,0.712,1.068,1.215,1.278],
 39:[0.024,0.013,0.047,0.073,0.065,0.111,0.039,0.109,0.043,0.027,0.03,0.194,0.05,0.014,0.146,0.031,0.024,0.018,0.135,0.036,0.081,0.087,0.059,0.094,0.117,0.089,0.17,0.007,0.061,0.062,0.09,0.152,0.1,0.031,0.008,0.023,0.168,0.006,0.104,0.018,0.195,0.012,0.085,0.115,0.08,-0.023,0.139,0.017,-0.059,0.047,0.086,0.099,0.093,-0.025,0.036,0.076,0.074,0.101,0.07,0.126],
 0:[0.88,0.856,0.855,0.794,0.734,0.699,0.535,0.447,0.09,-0.418,-1.05,-1.376,-1.967,-2.328,-2.453,-2.351,-2.288,-1.816,-1.128,-0.575,-0.015,0.734,1.201,1.469,1.446,1.59,1.511,1.382,1.421,1.317,1.31,1.309,1.243,1.175,1.129,1.13,1.009,0.878,0.988,0.929,0.941,0.803,0.778,0.755,0.644,0.571,0.423,0.092,-0.431,-0.967,-1.466,-1.593,-2.144,-2.375,-2.411,-2.244,-1.822,-1.262,-0.626,0.018],
}
BATCHES = [B1,B2,B3,B4,B5,B6,B7,B8]
app/data_slow_wave.py (15,296 chars)
# Slow-branch waveform library at u=0 (fresh draws), period ~81. stride 3, 162 ticks per batch (2 cycles).
S1 = {
 4:[-0.783,-0.685,-0.349,0.776,2.19,2.493,1.262,-0.869,-1.5,-1.419,-1.269,-1.251,-0.93,-0.882,-0.743,-0.648,-0.513,-0.49,-0.522,-0.51,-0.512,-0.643,-0.552,-0.6,-0.541,-0.474,-0.664,-0.511,-0.554,-0.364,0.629,2.139,2.506,1.363,-0.573,-1.615,-1.451,-1.28,-1.193,-0.914,-0.819,-0.838,-0.592,-0.578,-0.506,-0.412,-0.537,-0.56,-0.578,-0.564,-0.648,-0.553,-0.539,-0.486],
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S7 = {
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 34:[0.304,0.259,0.248,0.227,0.282,0.244,0.223,-0.275,-1.443,-2.091,-1.458,-0.009,0.956,1.05,0.9,0.796,0.706,0.556,0.523,0.373,0.308,0.253,0.255,0.192,0.285,0.327,0.255,0.325,0.367,0.255,0.277,0.263,0.279,0.176,-0.221,-1.058,-1.954,-1.846,-0.496,0.784,0.979,0.975,0.825,0.632,0.565,0.512,0.438,0.365,0.167,0.195,0.295,0.289,0.363,0.373],
 35:[-0.614,-0.527,-0.481,-0.525,-0.467,-0.451,-0.27,-0.353,-0.35,-0.289,-0.311,-0.309,-0.365,-0.277,-0.352,-0.29,-0.273,-0.367,-0.297,-0.356,-0.359,0.132,0.854,1.256,0.616,-0.348,-0.821,-0.785,-0.654,-0.615,-0.554,-0.444,-0.452,-0.365,-0.376,-0.326,-0.203,-0.332,-0.308,-0.319,-0.403,-0.253,-0.234,-0.287,-0.313,-0.298,-0.338,-0.296,-0.073,0.63,1.144,0.889,-0.213,-0.832],
 36:[-0.562,-0.521,-0.535,-0.564,-0.574,-0.431,-0.516,-0.532,-0.566,-0.603,-0.553,-0.568,-0.529,-0.493,0.337,1.411,1.816,0.782,-0.646,-1.252,-1.194,-1.043,-0.941,-0.872,-0.861,-0.623,-0.545,-0.552,-0.504,-0.503,-0.507,-0.536,-0.47,-0.571,-0.521,-0.561,-0.655,-0.495,-0.567,-0.5,-0.561,-0.017,1.002,1.712,1.195,-0.203,-1.181,-1.11,-1.132,-1.186,-0.939,-0.83,-0.701,-0.604],
 37:[-0.716,-0.779,-0.748,-0.674,-0.65,-0.715,-0.689,-0.564,0.447,1.828,2.221,1.132,-0.834,-1.745,-1.517,-1.464,-1.271,-1.039,-0.997,-0.847,-0.763,-0.628,-0.595,-0.707,-0.741,-0.7,-0.718,-0.69,-0.74,-0.653,-0.771,-0.782,-0.7,-0.712,-0.585,-0.085,1.403,2.29,1.638,-0.196,-1.565,-1.687,-1.477,-1.392,-1.236,-1.127,-0.906,-0.84,-0.663,-0.651,-0.645,-0.634,-0.722,-0.858],
 38:[1.036,0.908,0.766,0.676,0.573,0.435,0.4,0.321,0.429,0.306,0.447,0.399,0.364,0.445,0.342,0.333,0.483,0.405,0.39,0.321,-0.022,-1.091,-1.994,-1.799,-0.203,1.09,1.087,1.101,0.864,0.778,0.849,0.562,0.531,0.456,0.432,0.367,0.299,0.348,0.446,0.434,0.469,0.396,0.485,0.454,0.354,0.413,0.414,0.305,-0.748,-1.858,-1.968,-0.575,0.801,1.275],
}
SBATCH = [S1,S2,S3,S4,S5,S6,S7]
# dead channels: 2 (~0.177), 16 (~-0.085), 17 (~0.126), 39 (~0.071); sd ~0.045
app/predict.py (3,431 chars)
import numpy as np, json

Tf = np.load('/app/templates_fast.npy')   # 40 x 39, aligned: bin0 = ch4 spike peak
Ts = np.load('/app/templates_slow.npy')   # 36 x 81, aligned: bin0 = ch4 spike peak
fast_ch = sorted([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39])
slow_ch = [0,1,3,4,5,6,7,8,9,10,11,12,13,14,15,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38]
Tfd = {c:Tf[i] for i,c in enumerate(fast_ch)}
Tsd = {c:Ts[i] for i,c in enumerate(slow_ch)}

rng = np.random.default_rng(0)

def window_mean(ch, peaks, P, tpl, wa, wb):
    # evaluate template-based signal mean over window [wa,wb) given spike peak times
    ts = np.arange(wa, wb) + 0.5
    # phase rel. to most recent peak
    peaks = np.asarray(peaks)
    vals = np.empty(len(ts))
    B = len(tpl)
    for j,t in enumerate(ts):
        prev = peaks[peaks<=t]
        ph = (t - (prev[-1] if len(prev) else peaks[0]-P)) / P * B
        vals[j] = np.interp(ph % B, np.arange(B), tpl, period=B)
    return vals.mean()

def upcross_time(tpl):
    # time (bins) after peak where signal crosses its mean upward with steepest slope
    B=len(tpl); m=tpl.mean(); best=None
    for i in range(B):
        a,b = tpl[i], tpl[(i+1)%B]
        if a<m<=b:
            if best is None or (b-a)>best[1]: best=((i+ (m-a)/(b-a)), b-a)
    return best[0]

def count_cross(ch, peaks, P, tpl, wa, wb, off_sys):
    B=len(tpl); oc = upcross_time(tpl)*P/B + off_sys
    times = np.asarray(peaks)+oc
    return np.sum((times>=wa)&(times<wb))

def slow_peaks(Tend, T0m, Ps, jit, r):
    t=[T0m + r.normal(0,1.5)]
    while t[-1] < Tend+100: t.append(t[-1]+Ps+r.normal(0,jit))
    return t

def driven_peaks(Tend, T0m, I1, Pf, jit, r):
    t=[T0m + r.normal(0,1.5)]
    t.append(t[-1]+I1+r.normal(0,3))
    # second interval slightly长 ~ (Pf+3)
    t.append(t[-1]+Pf+2+r.normal(0,jit))
    while t[-1]<Tend+100: t.append(t[-1]+Pf+r.normal(0,jit))
    return t

def run_contract(kind, ch, Tend, stat, nsys=400, ndraw=120):
    truths=[]
    for s in range(nsys):
        # systematics
        T0m = 15 + rng.normal(0,1.2)
        Ps  = 81 + rng.normal(0,0.8)
        I1  = 58 + rng.normal(0,4)
        Pf  = 39.7 + rng.normal(0,0.8)
        off = rng.normal(0,3)      # crossing-threshold definition offset
        terr= rng.normal(0,0.04)   # template mean error
        vals=[]
        for d in range(ndraw):
            if kind=='slow':
                pk = slow_peaks(Tend,T0m,Ps,1.5,rng); P=Ps; tpl=Tsd[ch]
            else:
                pk = driven_peaks(Tend,T0m,I1,Pf,1.2,rng); P=Pf; tpl=Tfd[ch]
            if stat=='mean':
                vals.append(window_mean(ch,pk,P,tpl,Tend-20,Tend)+terr)
            else:
                vals.append(count_cross(ch,pk,P,tpl,Tend-20,Tend,off))
        truths.append(np.mean(vals))
    truths=np.array(truths)
    return dict(mean=float(np.median(truths)), lo=float(np.quantile(truths,0.04)),
                hi=float(np.quantile(truths,0.96)), sd=float(truths.std()))

CONTRACTS = [
 (0,'slow',0,306,'mean'), (1,'slow',36,337,'rate'), (2,'slow',34,332,'mean'),
 (3,'slow',3,288,'rate'), (4,'driven',6,367,'mean'), (5,'driven',14,392,'rate'),
 (6,'driven',24,420,'mean'), (7,'driven',0,384,'rate'),
]
for cid,kind,ch,Tend,stat in CONTRACTS:
    r=run_contract(kind,ch,Tend,stat)
    print(cid, kind, 'ch',ch, stat, 'Tend',Tend, '->', {k:round(v,3) for k,v in r.items()})
app/predict_pulse.py (3,554 chars)
import numpy as np

Ts = np.load('/app/templates_slow.npy')
slow_ch = [0,1,3,4,5,6,7,8,9,10,11,12,13,14,15,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38]
Tsd = {c:Ts[i] for i,c in enumerate(slow_ch)}
rng = np.random.default_rng(1)

def upcross_time(tpl):
    B=len(tpl); m=tpl.mean(); best=None
    for i in range(B):
        a,b=tpl[i],tpl[(i+1)%B]
        if a<m<=b:
            if best is None or (b-a)>best[1]: best=((i+(m-a)/(b-a)),b-a)
    return best[0]

# pulse schedule per contract: list of (start, len) with amplitude 1.0 (any port - same effect)
def sched_regular(plen, gap, n):
    s=[]; t=0
    for i in range(n): s.append((t,plen)); t+=plen+gap
    return s

CON = {
 8:  dict(ch=24, stat='mean', Tend=539, pulses=sched_regular(8,64,5)),
 9:  dict(ch=30, stat='rate', Tend=489, pulses=sched_regular(8,36,8)),
 10: dict(ch=25, stat='mean', Tend=546, pulses=sched_regular(8,43,7)),
 11: dict(ch=36, stat='rate', Tend=460, pulses=sched_regular(8,48,6)),
 12: dict(ch=23, stat='mean', Tend=420, pulses=[(0,10),(80,10),(110,10),(160,10),(220,10),(240,10),(320,10),(330,10),(400,10)]),
 13: dict(ch=3,  stat='rate', Tend=420, pulses=[(0,10),(60,10),(110,10),(120,10),(180,10),(240,10),(300,10),(320,10),(360,10)]),
 14: dict(ch=13, stat='mean', Tend=420, pulses=[(0,10),(90,10),(180,10),(220,10),(270,10),(290,10),(360,10)]),
 15: dict(ch=9,  stat='rate', Tend=420, pulses=[(0,10),(70,10),(90,10),(130,10),(180,10),(200,10),(260,10),(330,10),(350,10),(390,10)]),
}

def simulate(pulses, Tend, T0m, Ps, tau_c, tau_d, floor_k, jit, r):
    """tick-by-tick phase integration; returns spike peak times."""
    # initial condition: first spike would be at T0 under no drive -> phase0 = (Ps-T0)/Ps
    T0 = T0m + r.normal(0,1.5)
    phase = (Ps-T0)/Ps
    rr = 0.0; floor=0.0
    pk=[]
    pset = np.zeros(Tend+1)
    for (s,l) in pulses: pset[s:s+l]=1
    for t in range(Tend):
        if pset[t]:
            rr += (1-rr)/tau_c
            floor = min(0.55, floor + floor_k)
        else:
            rr = floor + (rr-floor)*np.exp(-1/tau_d)
        P = Ps - (Ps-39.7)*min(rr,1.0)
        phase += 1.0/P
        if phase >= 1.0:
            phase -= 1.0
            pk.append(t + r.normal(0,jit))
    return pk

def window_stat(ch, pk, wa, wb, stat, off_sys, Ps):
    tpl = Tsd[ch]; B=81
    base = tpl[50:76].mean()
    if stat=='rate':
        oc = upcross_time(tpl) + off_sys
        times = np.asarray(pk)+oc
        return np.sum((times>=wa)&(times<wb))
    ts = np.arange(wa,wb)+0.5
    vals=[]
    for t in ts:
        prev=[p for p in pk if p<=t]
        if prev:
            d=t-prev[-1]
            vals.append(np.interp(d,np.arange(B),tpl) if d<45 else base)
        else: vals.append(base)
    return np.mean(vals)

for cid,c in CON.items():
    truths=[]
    for s in range(300):
        T0m=15+rng.normal(0,1.2); Ps=81+rng.normal(0,0.8)
        tau_c=25*np.exp(rng.normal(0,0.3)); tau_d=60*np.exp(rng.normal(0,0.4))
        floor_k=0.006*np.exp(rng.normal(0,0.6))
        off=rng.normal(0,3); terr=rng.normal(0,0.04)
        vals=[]
        for d in range(60):
            pk=simulate(c['pulses'],c['Tend'],T0m,Ps,tau_c,tau_d,floor_k,2.0,rng)
            v=window_stat(c['ch'],pk,c['Tend']-20,c['Tend'],c['stat'],off,Ps)
            vals.append(v+(terr if c['stat']=='mean' else 0))
        truths.append(np.mean(vals))
    truths=np.array(truths)
    print(cid,'ch',c['ch'],c['stat'],'->','med %.3f lo %.3f hi %.3f sd %.3f'%(
        np.median(truths),np.quantile(truths,0.04),np.quantile(truths,0.96),truths.std()))
app/stats_fast.json (6,483 chars)
{
"0": {
"tavg": 0.268,
"lo20": -0.644,
"hi20": 1.205,
"sd_cycle": 1.274,
"sd20lo": 0.233,
"sd20hi": 1.592,
"amp": 3.98,
"pk": 1.565,
"tr": -2.415,
"argpk": 26
},
"1": {
"tavg": -0.467,
"lo20": -1.379,
"hi20": 0.42,
"sd_cycle": 1.23,
"sd20lo": 0.234,
"sd20hi": 1.535,
"amp": 3.848,
"pk": 2.067,
"tr": -1.781,
"argpk": 1
},
"2": {
"tavg": 0.177,
"lo20": 0.165,
"hi20": 0.186,
"sd_cycle": 0.04,
"sd20lo": 0.027,
"sd20hi": 0.049,
"amp": 0.176,
"pk": 0.29,
"tr": 0.114,
"argpk": 33
},
"3": {
"tavg": 0.05,
"lo20": -0.346,
"hi20": 0.435,
"sd_cycle": 0.527,
"sd20lo": 0.113,
"sd20hi": 0.657,
"amp": 1.671,
"pk": 1.141,
"tr": -0.53,
"argpk": 2
},
"4": {
"tavg": -0.206,
"lo20": -1.183,
"hi20": 0.741,
"sd_cycle": 1.326,
"sd20lo": 0.238,
"sd20hi": 1.661,
"amp": 4.103,
"pk": 2.563,
"tr": -1.54,
"argpk": 0
},
"5": {
"tavg": -0.161,
"lo20": -0.806,
"hi20": 0.461,
"sd_cycle": 0.874,
"sd20lo": 0.16,
"sd20hi": 1.094,
"amp": 2.822,
"pk": 1.749,
"tr": -1.073,
"argpk": 3
},
"6": {
"tavg": -0.3,
"lo20": -0.894,
"hi20": 0.277,
"sd_cycle": 0.818,
"sd20lo": 0.143,
"sd20hi": 1.023,
"amp": 2.583,
"pk": 1.446,
"tr": -1.137,
"argpk": 38
},
"7": {
"tavg": -0.419,
"lo20": -1.176,
"hi20": 0.316,
"sd_cycle": 1.043,
"sd20lo": 0.202,
"sd20hi": 1.312,
"amp": 3.303,
"pk": 1.801,
"tr": -1.502,
"argpk": 25
},
"8": {
"tavg": -0.136,
"lo20": -0.642,
"hi20": 0.352,
"sd_cycle": 0.682,
"sd20lo": 0.115,
"sd20hi": 0.851,
"amp": 2.178,
"pk": 1.346,
"tr": -0.832,
"argpk": 28
},
"9": {
"tavg": -0.058,
"lo20": -0.519,
"hi20": 0.419,
"sd_cycle": 0.652,
"sd20lo": 0.134,
"sd20hi": 0.819,
"amp": 2.114,
"pk": 0.641,
"tr": -1.473,
"argpk": 29
},
"10": {
"tavg": -0.276,
"lo20": -0.992,
"hi20": 0.417,
"sd_cycle": 0.95,
"sd20lo": 0.163,
"sd20hi": 1.177,
"amp": 2.959,
"pk": 1.72,
"tr": -1.238,
"argpk": 37
},
"11": {
"tavg": -0.064,
"lo20": -0.912,
"hi20": 0.76,
"sd_cycle": 1.155,
"sd20lo": 0.219,
"sd20hi": 1.447,
"amp": 3.586,
"pk": 2.315,
"tr": -1.271,
"argpk": 4
},
"12": {
"tavg": -0.069,
"lo20": -0.632,
"hi20": 0.477,
"sd_cycle": 0.769,
"sd20lo": 0.147,
"sd20hi": 0.966,
"amp": 2.437,
"pk": 1.538,
"tr": -0.899,
"argpk": 33
},
"13": {
"tavg": -0.319,
"lo20": -0.759,
"hi20": 0.109,
"sd_cycle": 0.608,
"sd20lo": 0.13,
"sd20hi": 0.77,
"amp": 1.926,
"pk": 0.96,
"tr": -0.966,
"argpk": 16
},
"14": {
"tavg": -0.485,
"lo20": -1.193,
"hi20": 0.2,
"sd_cycle": 0.919,
"sd20lo": 0.177,
"sd20hi": 1.139,
"amp": 2.866,
"pk": 1.41,
"tr": -1.456,
"argpk": 21
},
"15": {
"tavg": 0.423,
"lo20": 0.001,
"hi20": 0.86,
"sd_cycle": 0.593,
"sd20lo": 0.11,
"sd20hi": 0.743,
"amp": 1.889,
"pk": 1.033,
"tr": -0.856,
"argpk": 36
},
"16": {
"tavg": -0.085,
"lo20": -0.099,
"hi20": -0.072,
"sd_cycle": 0.041,
"sd20lo": 0.028,
"sd20hi": 0.05,
"amp": 0.17,
"pk": -0.003,
"tr": -0.173,
"argpk": 19
},
"17": {
"tavg": 0.126,
"lo20": 0.113,
"hi20": 0.141,
"sd_cycle": 0.048,
"sd20lo": 0.034,
"sd20hi": 0.055,
"amp": 0.22,
"pk": 0.226,
"tr": 0.006,
"argpk": 30
},
"18": {
"tavg": 0.231,
"lo20": -0.667,
"hi20": 1.157,
"sd_cycle": 1.27,
"sd20lo": 0.247,
"sd20hi": 1.592,
"amp": 3.989,
"pk": 1.531,
"tr": -2.458,
"argpk": 36
},
"19": {
"tavg": -0.107,
"lo20": -0.614,
"hi20": 0.385,
"sd_cycle": 0.67,
"sd20lo": 0.122,
"sd20hi": 0.832,
"amp": 2.071,
"pk": 1.279,
"tr": -0.791,
"argpk": 1
},
"20": {
"tavg": 0.331,
"lo20": -0.445,
"hi20": 1.13,
"sd_cycle": 1.086,
"sd20lo": 0.21,
"sd20hi": 1.355,
"amp": 3.389,
"pk": 1.435,
"tr": -1.954,
"argpk": 5
},
"21": {
"tavg": -0.212,
"lo20": -0.852,
"hi20": 0.41,
"sd_cycle": 0.857,
"sd20lo": 0.178,
"sd20hi": 1.079,
"amp": 2.704,
"pk": 1.586,
"tr": -1.118,
"argpk": 24
},
"22": {
"tavg": -0.119,
"lo20": -0.827,
"hi20": 0.569,
"sd_cycle": 0.962,
"sd20lo": 0.189,
"sd20hi": 1.209,
"amp": 3.045,
"pk": 1.895,
"tr": -1.15,
"argpk": 31
},
"23": {
"tavg": 0.079,
"lo20": -0.36,
"hi20": 0.53,
"sd_cycle": 0.596,
"sd20lo": 0.122,
"sd20hi": 0.743,
"amp": 1.875,
"pk": 0.728,
"tr": -1.147,
"argpk": 31
},
"24": {
"tavg": -0.111,
"lo20": -0.872,
"hi20": 0.624,
"sd_cycle": 1.025,
"sd20lo": 0.203,
"sd20hi": 1.287,
"amp": 3.266,
"pk": 2.032,
"tr": -1.234,
"argpk": 23
},
"25": {
"tavg": -0.088,
"lo20": -0.654,
"hi20": 0.495,
"sd_cycle": 0.789,
"sd20lo": 0.152,
"sd20hi": 0.986,
"amp": 2.418,
"pk": 0.732,
"tr": -1.686,
"argpk": 14
},
"26": {
"tavg": -0.067,
"lo20": -1.004,
"hi20": 0.895,
"sd_cycle": 1.271,
"sd20lo": 0.253,
"sd20hi": 1.58,
"amp": 3.984,
"pk": 1.265,
"tr": -2.719,
"argpk": 21
},
"27": {
"tavg": -0.457,
"lo20": -1.305,
"hi20": 0.367,
"sd_cycle": 1.159,
"sd20lo": 0.227,
"sd20hi": 1.467,
"amp": 3.683,
"pk": 1.986,
"tr": -1.697,
"argpk": 26
},
"28": {
"tavg": 0.138,
"lo20": -0.454,
"hi20": 0.746,
"sd_cycle": 0.836,
"sd20lo": 0.141,
"sd20hi": 1.046,
"amp": 2.643,
"pk": 0.984,
"tr": -1.659,
"argpk": 9
},
"29": {
"tavg": 0.021,
"lo20": -0.517,
"hi20": 0.578,
"sd_cycle": 0.755,
"sd20lo": 0.147,
"sd20hi": 0.954,
"amp": 2.378,
"pk": 0.827,
"tr": -1.551,
"argpk": 24
},
"30": {
"tavg": -0.317,
"lo20": -1.147,
"hi20": 0.488,
"sd_cycle": 1.104,
"sd20lo": 0.207,
"sd20hi": 1.376,
"amp": 3.457,
"pk": 1.981,
"tr": -1.476,
"argpk": 9
},
"31": {
"tavg": -0.278,
"lo20": -0.686,
"hi20": 0.119,
"sd_cycle": 0.557,
"sd20lo": 0.107,
"sd20hi": 0.691,
"amp": 1.757,
"pk": 0.892,
"tr": -0.865,
"argpk": 35
},
"32": {
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},
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},
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},
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},
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}
}
app/stats_slow.json (4,944 chars)
{
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},
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},
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},
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},
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}
app/templates.py (2,168 chars)
import numpy as np, json
from data_fast_wave import BATCHES

P = 39.0
BINS = 39

def ch4_phase(x):
    """phase offset (tick of first spike peak of ch4, subsample) via parabolic interp"""
    x = np.asarray(x)
    i = int(np.argmax(x))
    if 0 < i < len(x)-1:
        a,b,c = x[i-1],x[i],x[i+1]
        d = 0.5*(a-c)/(a-2*b+c)
    else: d = 0.0
    return i+d

def fold(x, t0):
    x=np.asarray(x); n=len(x)
    acc=np.zeros(BINS); cnt=np.zeros(BINS)
    ph = ((np.arange(n)-t0) % P)/P*BINS
    k = np.floor(ph).astype(int)%BINS
    for i in range(n): acc[k[i]]+=x[i]; cnt[k[i]]+=1
    with np.errstate(invalid='ignore'):
        t = acc/np.maximum(cnt,1)
    # fill empty bins by interpolation
    if (cnt==0).any():
        good=np.where(cnt>0)[0]
        for kk in np.where(cnt==0)[0]:
            t[kk]=np.interp(kk, good, t[good], period=BINS)
    return t

templates={}
for b in BATCHES:
    t0 = ch4_phase(b[4])
    for ch, x in b.items():
        T = fold(x, t0)
        if ch in templates: templates[ch].append(T)
        else: templates[ch]=[T]
templates = {ch: np.mean(np.stack(v),axis=0) for ch,v in templates.items()}

# stats per channel: time-avg, amplitude, rolling-20 mean min/max, cycle sd,
# sd of 20-tick window as function of phase (min/max), upward-crossing usable?
out={}
for ch in sorted(templates):
    T = templates[ch]
    tavg = T.mean()
    # rolling 20-tick means over the cycle (wrap)
    ext = np.concatenate([T,T])
    r20 = np.array([ext[i:i+20].mean() for i in range(BINS)])
    s20 = np.array([ext[i:i+20].std() for i in range(BINS)])
    out[ch] = dict(tavg=round(float(tavg),3), lo20=round(float(r20.min()),3),
                   hi20=round(float(r20.max()),3), sd_cycle=round(float(T.std()),3),
                   sd20lo=round(float(s20.min()),3), sd20hi=round(float(s20.max()),3),
                   amp=round(float(T.max()-T.min()),3),
                   pk=round(float(T.max()),3), tr=round(float(T.min()),3),
                   argpk=int(T.argmax()))
    print(ch, out[ch])

np.save('/app/templates_fast.npy', np.stack([templates[ch] for ch in sorted(templates)]))
json.dump(out, open('/app/stats_fast.json','w'), indent=0)
app/templates_slow.py (1,975 chars)
import numpy as np, json
from data_slow_wave import SBATCH

# slow branch: stride 3, so sample i is tick 3*i. Period ~81 ticks = 27 samples.
P_t = 81.0   # ticks
BINS = 81    # 1-tick bins via folding (sparse; interpolate)

def ch4_phase_ticks(x):
    x=np.asarray(x); i=int(np.argmax(x))
    if 0<i<len(x)-1:
        a,b,c=x[i-1],x[i],x[i+1]; d=0.5*(a-c)/(a-2*b+c)
    else: d=0.0
    return (i+d)*3.0  # ticks

def fold(x, t0):
    x=np.asarray(x); n=len(x)
    ticks=np.arange(n)*3.0
    ph=((ticks-t0)%P_t)
    k=np.floor(ph).astype(int)%BINS
    acc=np.zeros(BINS); cnt=np.zeros(BINS)
    for i in range(n): acc[k[i]]+=x[i]; cnt[k[i]]+=1
    t=acc/np.maximum(cnt,1)
    good=np.where(cnt>0)[0]
    for kk in np.where(cnt==0)[0]:
        t[kk]=np.interp(kk, good, t[good], period=BINS)
    return t

templates={}
for b in SBATCH:
    t0=ch4_phase_ticks(b[4])
    for ch,x in b.items():
        T=fold(x,t0)
        templates.setdefault(ch,[]).append(T)
templates={ch:np.mean(np.stack(v),axis=0) for ch,v in templates.items()}

out={}
for ch in sorted(templates):
    T=templates[ch]; ext=np.concatenate([T,T])
    r20=np.array([ext[i:i+20].mean() for i in range(BINS)])
    s20=np.array([ext[i:i+20].std() for i in range(BINS)])
    # sd over 200-tick window = 2.47 cycles: approx sd over full cycle with phase jitter; compute sd of 200-window
    ext2=np.concatenate([T]*4)
    s200=np.array([ext2[i:i+200].std() for i in range(BINS)])
    out[ch]=dict(tavg=round(float(T.mean()),3), lo20=round(float(r20.min()),3),
                 hi20=round(float(r20.max()),3), sd_cycle=round(float(T.std()),3),
                 sd200lo=round(float(s200.min()),3), sd200hi=round(float(s200.max()),3),
                 pk=round(float(T.max()),3), tr=round(float(T.min()),3))
    print(ch,out[ch])
json.dump(out, open('/app/stats_slow.json','w'), indent=0)
np.save('/app/templates_slow.npy', np.stack([templates[ch] for ch in sorted(templates)]))
print('channels:', sorted(templates))
app/theory_code.py (17,361 chars)
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DEAD={2:0.177,16:-0.085,17:0.126,39:0.071}
def _y(state):
    ph, r, tsl = state['ph'], state['r'], state['tsl']
    P = 81.0 - 41.3*min(r,1.0)
    ttn = (1.0-ph)*P
    y=[]
    for c in range(40):
        if c in DEAD: y.append(DEAD[c]); continue
        t=TPL[c]
        if tsl<=50: v=t[int(tsl)%81]
        elif ttn<=8.0: v=t[int(81-ttn)%81]
        else: v=(t[55]+t[60]+t[65])/3.0
        y.append(v)
    return y
def init(y_history):
    # fresh draws are phase-pinned: first spike ~15 ticks after start
    return {'ph': 1.0-15.0/81.0, 'r':0.0, 'floor':0.0, 'tsl':100.0, 'fast_t':0.0, 'latch':0}
def step(state, a):
    s=dict(state)
    drv = (a[0]>0.4) or (abs(a[1])>0.4) or any(a[p]>0.4 for p in range(2,8))
    if a[0]>=0.9: s['latch']=1
    if drv:
        s['r'] += (1.0-s['r'])/38.0
        s['fast_t'] += 1.0
        s['floor'] = min(0.55, s['floor']+0.0007)
    else:
        s['r'] = s['floor'] + (s['r']-s['floor'])*0.9834983
    if s['fast_t']>850.0 or s['latch']: s['floor']=1.0; s['r']=max(s['r'],0.9)
    P = 81.0 - 41.3*min(s['r'],1.0)
    s['ph'] += 1.0/P
    s['tsl'] += 1.0
    if s['ph']>=1.0:
        s['ph']-=1.0; s['tsl']=0.0
    return s, _y(s)
app/theory_part1.txt (16,186 chars)
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app/theory_part2.txt (1,175 chars)
DEAD={2:0.177,16:-0.085,17:0.126,39:0.071}
def _y(state):
    ph, r, tsl = state['ph'], state['r'], state['tsl']
    P = 81.0 - 41.3*min(r,1.0)
    ttn = (1.0-ph)*P
    y=[]
    for c in range(40):
        if c in DEAD: y.append(DEAD[c]); continue
        t=TPL[c]
        if tsl<=50: v=t[int(tsl)%81]
        elif ttn<=8.0: v=t[int(81-ttn)%81]
        else: v=(t[55]+t[60]+t[65])/3.0
        y.append(v)
    return y
def init(y_history):
    # fresh draws are phase-pinned: first spike ~15 ticks after start
    return {'ph': 1.0-15.0/81.0, 'r':0.0, 'floor':0.0, 'tsl':100.0, 'fast_t':0.0, 'latch':0}
def step(state, a):
    s=dict(state)
    drv = (a[0]>0.4) or (abs(a[1])>0.4) or any(a[p]>0.4 for p in range(2,8))
    if a[0]>=0.9: s['latch']=1
    if drv:
        s['r'] += (1.0-s['r'])/38.0
        s['fast_t'] += 1.0
        s['floor'] = min(0.55, s['floor']+0.0007)
    else:
        s['r'] = s['floor'] + (s['r']-s['floor'])*0.9834983
    if s['fast_t']>850.0 or s['latch']: s['floor']=1.0; s['r']=max(s['r'],0.9)
    P = 81.0 - 41.3*min(s['r'],1.0)
    s['ph'] += 1.0/P
    s['tsl'] += 1.0
    if s['ph']>=1.0:
        s['ph']-=1.0; s['tsl']=0.0
    return s, _y(s)
app/tpl_literal.txt (16,185 chars)
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Executable theory

accuracy 0.561 · per-stratum {'S1': 0.86, 'S2': 0.58, 'S3': 0.62, 'S4': 0.19} · 17,360 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.4940.2910.10.888
1S1+2.0001.0002.00.140
2S1+0.2960.2330.40.662
3S1+3.0001.0003.00.051
4S2+0.2360.1821.80.158
5S2+5.0001.0004.80.009
6S2+0.6290.2352.00.130
7S2+0.0001.0000.80.458
8S3+0.6250.2353.90.019
9S3+3.0001.0002.90.055
10S3-0.3050.1762.20.112
11S3+2.0001.0001.90.150
12S4-0.2060.1432.80.059
13S4+3.0001.0002.90.056
14S4-0.5050.1350.60.533
15S4+3.5833.1121.10.327
Verbatim log (255 entries)
physim.status({})
physim.status({})
{"budget_left": 200000, "phase": "explore"}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start by observing the system at rest, then probe each input port.
{"ticks_run": 200, "budget_left": 199800}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [3, 4, 5, 26, 30, 37], "series": true, "max_numbers": 360})
Baseline recorded. Many channels have low noise (~0.05 sd), several are highly variable (osc/noise). Let me look at time series of some volatile channels and check stationarity.
{"ticks_run": 300, "budget_left": 199500}
physim.run({"segments": [{"t": 200, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 200, "budget_left": 199300}
physim.run({"segments": [{"t": 240, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 4, 26, 30, 37, 14], "series": true, "max_numbers": 360})
Port 0 strongly excites oscillations across many channels. Let me see the waveform under drive.
{"ticks_run": 240, "budget_left": 199060}
physim.run({"segments": [{"t": 250, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all", "series": true, "max_numbers": 300})
{"error": "series observation limited to <=6 channels"}
physim.run({"segments": [{"t": 250, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 250, "budget_left": 198560}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
The oscillator persists at u0=-0.8 but slows. Now let me map DC responses for the other 7 ports. I'll record everything to a notes file as I go.
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
The oscillator persists at u0=-0.8 but slows. Now let me map DC responses for the other 7 ports. I'll record everything to a notes file as I go.
{"ticks_run": 320, "budget_left": 198240}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0, 0.8, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 320, "budget_left": 197920}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 320, "budget_left": 197600}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0, 0, 0, 0.8, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 320, "budget_left": 197280}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0, 0, 0, 0, 0.8, 0, 0]}], "channels": "all"})
{"ticks_run": 320, "budget_left": 196960}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}], "channels": "all"})
{"ticks_run": 320, "budget_left": 196640}
physim.run({"segments": [{"t": 100, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 220, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}], "channels": "all"})
Port 6 positive nearly silences the main oscillator — very useful. Continuing with port 7, then I'll dig into port 6.
{"ticks_run": 320, "budget_left": 196320}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}], "channels": [0, 4, 18, 25, 26, 36], "series": true, "max_numbers": 360})
Port 7 responses look nearly identical to port 3 — likely the same latent pathway. Now let me examine what survives when port 6 silences the main oscillator.
{"ticks_run": 300, "budget_left": 196020}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 700, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}], "channels": [4], "series": true, "max_numbers": 360, "stride": 3})
The oscillation resumed under sustained u6=0.8 (period ≈ 40) — so port 6's suppression is transient. There's slow adaptation here. Let me characterize the port-6 step response over a long window.
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 700, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}], "channels": [4], "series": true, "max_numbers": 360, "stride": 3})
The oscillation resumed under sustained u6=0.8 (period ≈ 40) — so port 6's suppression is transient. There's slow adaptation here. Let me characterize the port-6 step response over a long window.
{"ticks_run": 900, "budget_left": 195120}
physim.run({"segments": [{"t": 200, "u": [0, 0, 0, 0, 0, 0.8, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 26, 18, 25, 36, 0], "series": true, )
{"ticks_run": 700, "budget_left": 194420}
physim.run({"segments": [{"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 310, "stride": 2})
{"ticks_run": 600, "budget_left": 193820}
physim.run({"segments": [{"t": 520, "u": [-1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
{"ticks_run": 520, "budget_left": 193300}
physim.run({"segments": [{"t": 520, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
u0=−1 barely slows it (period ~82 vs 80). The frequency response may be rectified. Testing positive levels.
{"ticks_run": 520, "budget_left": 192780}
physim.run({"segments": [{"t": 520, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
{"ticks_run": 520, "budget_left": 192260}
physim.run({"segments": [{"t": 520, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
{"ticks_run": 520, "budget_left": 191740}
physim.run({"segments": [{"t": 520, "u": [0, 0, 0.8, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
{"ticks_run": 520, "budget_left": 191220}
Write: /app/notes.md
Let me record findings so far in a notes file, then continue the frequency mapping at lower amplitudes where the response curve is steep.
Write: /app/notes.md
Let me record findings so far in a notes file, then continue the frequency mapping at lower amplitudes where the response curve is steep.
physim.run({"segments": [{"t": 520, "u": [0.15, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
{"ticks_run": 520, "budget_left": 190700}
physim.run({"segments": [{"t": 520, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 2})
u0=0.15 gives period ~40 — surprisingly fast for such small input, possibly history-dependent. Re-checking the u=0 baseline immediately after this drive history.
{"ticks_run": 520, "budget_left": 190180}
physim.run({"segments": [{"t": 1600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 6})
{"ticks_run": 1600, "budget_left": 188580}
physim.run({"segments": [{"t": 600, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}, {"t": 700, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 270, "stride": 5})
Fast rate persists ≥2100 ticks at zero input — likely a bistable rate branch or ultra-slow adaptation. Testing whether strong negative drive switches it back to the slow branch.
{"ticks_run": 1300, "budget_left": 187280}
physim.reset({})
{"budget_left": 187080}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 260, "stride": 2})
{"ticks_run": 500, "budget_left": 186580}
physim.run({"segments": [{"t": 800, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 5})
Fresh draw starts on the slow branch (period ~82), same as the first draw. Now: how long must strong drive last to flip the branch? Testing 800 ticks of u0=+1, then release.
physim.run({"segments": [{"t": 800, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 5})
Fresh draw starts on the slow branch (period ~82), same as the first draw. Now: how long must strong drive last to flip the branch? Testing 800 ticks of u0=+1, then release.
{"ticks_run": 1400, "budget_left": 185180}
physim.reset({})
800 ticks of u0=+1 flips it to the persistent fast branch. Now testing 400 ticks of the same drive.
{"budget_left": 184980}
physim.run({"segments": [{"t": 400, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 5})
{"ticks_run": 1200, "budget_left": 183780}
physim.reset({})
400 ticks at u0=+1 also flips it, while ≤700 ticks at 0.8 didn't — the flip threshold seems amplitude-dependent (between 0.8 and 1.0). Testing a short 150-tick pulse at +1.
{"budget_left": 183580}
physim.run({"segments": [{"t": 150, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 850, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 4})
{"ticks_run": 1000, "budget_left": 182580}
physim.reset({})
Even a 150-tick pulse at u0=+1 latches the fast branch. This is a threshold latch (set by strong input, ~0.9–1.0). Testing which ports can set it: port 1 first.
{"budget_left": 182380}
physim.run({"segments": [{"t": 200, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 3})
physim.run({"segments": [{"t": 200, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 3})
{"ticks_run": 800, "budget_left": 181580}
physim.reset({})
Port 1 at full strength does NOT set the latch (returns to slow ~81). The latch is port-specific. Testing ports 2–7 together at +1.
{"budget_left": 181380}
physim.run({"segments": [{"t": 200, "u": [0, 0, 1, 1, 1, 1, 1, 1]}, {"t": 600, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 280, "stride": 3})
{"ticks_run": 800, "budget_left": 180580}
physim.run({"segments": [{"t": 60, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [0, 1, 0, 0, 0, 0, 0, 0]}, {"t": 237, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 60, "u": [)
{"ticks_run": 960, "budget_left": 179620}
physim.run({"segments": [{"t": 700, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 240, "stride": 3})
{"ticks_run": 700, "budget_left": 178920}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 0, 1, 2, 3, 5], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178860}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 6, 7, 8, 9, 10], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178800}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 11, 12, 13, 14, 15], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178740}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 16, 17, 18, 19, 20], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178680}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 21, 22, 23, 24, 25], "series": true, "max_numbers": 360, "stride": 1})
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 21, 22, 23, 24, 25], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178620}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 26, 27, 28, 29, 30], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178560}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 31, 32, 33, 34, 35], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178500}
physim.run({"segments": [{"t": 60, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 36, 37, 38, 39, 0], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 60, "budget_left": 178440}
Write: /app/data_fast_wave.py
All 40 fast-branch waveforms captured. Now I'll persist this data to the workspace for offline fitting.
Write: /app/analyze_fast.py
Now the analysis script to build phase-aligned templates and per-channel statistics:
Write: /app/templates.py
Period ≈ 39. Now build phase-aligned templates for all 40 channels and derive per-channel stats:
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 178284}
physim.run({"segments": [{"t": 156, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 178128}
physim.run({"segments": [{"t": 156, "u": [-0.6, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
u0=+0.6 shows essentially zero DC shift — port 0 is frequency/latch only. Continuing through all ports.
{"ticks_run": 156, "budget_left": 177972}
physim.run({"segments": [{"t": 156, "u": [0, 0.6, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 177816}
physim.run({"segments": [{"t": 156, "u": [0, -0.6, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 177660}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 177504}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0.6, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 177348}
physim.run({"segments": [{"t": 156, "u": [0, 0, -0.6, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 177192}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 177036}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, -0.6, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 176880}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 176724}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0.6, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 176568}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, -0.6, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 176412}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0.6, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 176256}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, -0.6, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 176100}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 175944}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0.6, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 175788}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, -0.6, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 175632}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0.6]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 175476}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, -0.6]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 175320}
physim.run({"segments": [{"t": 156, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
{"ticks_run": 156, "budget_left": 175164}
physim.reset({})
{"budget_left": 174964}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 0, 1, 3, 5, 6], "series": true, "max_numbers": 330, "stride": 3})
{"ticks_run": 162, "budget_left": 174802}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 7, 8, 9, 10, 11], "series": true, "max_numbers": 330, "stride": 3})
Slow branch: same spike event shape, just longer flat inter-spike phase (period ~81). Completing the slow-branch library for all channels:
{"ticks_run": 162, "budget_left": 174640}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 12, 13, 14, 15, 18], "series": true, "max_numbers": 330, "stride": 3})
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 12, 13, 14, 15, 18], "series": true, "max_numbers": 330, "stride": 3})
{"ticks_run": 162, "budget_left": 174478}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 19, 20, 21, 22, 23], "series": true, "max_numbers": 330, "stride": 3})
{"ticks_run": 162, "budget_left": 174316}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 24, 25, 26, 27, 28], "series": true, "max_numbers": 330, "stride": 3})
{"ticks_run": 162, "budget_left": 174154}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 29, 30, 31, 32, 33], "series": true, "max_numbers": 330, "stride": 3})
{"ticks_run": 162, "budget_left": 173992}
physim.run({"segments": [{"t": 162, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4, 34, 35, 36, 37, 38], "series": true, "max_numbers": 330, "stride": 3})
{"ticks_run": 162, "budget_left": 173830}
physim.reset({})
Slow-branch library complete. Now the critical piece for "weak push" contracts: frequency vs small input levels on the slow branch. Staircase on port 0:
{"budget_left": 173630}
physim.run({"segments": [{"t": 300, "u": [0.1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.2, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.3, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.45, 0, 0, 0, 0, 0, 0, 0]}, {"t":)
{"ticks_run": 2000, "budget_left": 171630}
physim.reset({})
{"budget_left": 171430}
physim.run({"segments": [{"t": 300, "u": [0, 0.15, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0.3, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0.45, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, -0.3, 0, 0, 0, 0, 0, 0]}, {"t)
{"ticks_run": 1800, "budget_left": 169630}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 210, "stride": 2})
Port 1 negative levels ALSO drive fast (rectified), and after ~900 ticks of driving it latched fast even at release. Checking latch persistence, then testing negative levels on other ports:
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 210, "stride": 2})
Port 1 negative levels ALSO drive fast (rectified), and after ~900 ticks of driving it latched fast even at release. Checking latch persistence, then testing negative levels on other ports:
{"ticks_run": 400, "budget_left": 169230}
physim.reset({})
Latched confirmed. Now negative-level test on ports 2, 4, 6 from a fresh draw:
{"budget_left": 169030}
physim.run({"segments": [{"t": 300, "u": [0, 0, -0.6, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, -0.6, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, -0.6, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "cha)
{"ticks_run": 1200, "budget_left": 167830}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0.6, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0.6, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0.6, 0]}, {"t": 300, "u": [0, 0, 0, 0.6, 0, 0, 0, 0]}], "chan)
Ports 2/4/6 negative do nothing (period stays 81 throughout). Checking their positive levels drive fast as expected:
{"ticks_run": 1200, "budget_left": 166630}
physim.reset({})
All ports' positive levels ≥0.45 drive fast. Now quantifying amplitude adaptation under sustained strong drive (matters for sd contracts), from a fresh draw:
{"budget_left": 166430}
physim.run({"segments": [{"t": 900, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 310, "stride": 3})
{"ticks_run": 900, "budget_left": 165530}
Write: /app/data_slow_wave.py
Write: /app/data_slow_wave.py
Write: /app/templates_slow.py
physim.reset({})
Slow templates built. Two more fresh-draw checks to confirm draws consistently start on the slow branch:
{"budget_left": 165330}
physim.run({"segments": [{"t": 340, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 180, "stride": 2})
{"ticks_run": 340, "budget_left": 164990}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0.4, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 160, "stride": 4})
{"ticks_run": 600, "budget_left": 164390}
physim.reset({})
One more clean reference for the announced "strong drive + release" regime:
{"budget_left": 164190}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}, {"t": 700, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4], "series": true, "max_numbers": 340, "stride": 3})
{"ticks_run": 1000, "budget_left": 163190}
Write: /app/model.md
Write: /app/model.md
physim.ready({})
{"phase": "answer"}
physim.run({"segments": [{"t": 20, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [4]})
{"error": "exploration is over; reply with the answers object"}
Write: /app/predict.py
Write: /app/predict_pulse.py
Write: /app/predict_pulse.py
physim.answer({"answers": [{"id": 0, "mean": -0.46, "low": -0.67, "high": 0.0}, {"id": 1, "mean": 0.03, "low": 0.0, "high": 0.2}, {"id": 2, "mean": 0.2, "low": -0.2, "high": 0.37}, {"id": 3, "mean": 0.03, "low": 0.)
All predictions computed. Submitting answers — pinned-phase medians for the deterministic contracts, mode-weighted hedges with wide intervals for the bimodal pulse-train rates:
physim.answer({"answers": [{"id": 0, "mean": -0.46, "low": -0.67, "high": 0}, {"id": 1, "mean": 0.03, "low": 0, "high": 0.2}, {"id": 2, "mean": 0.2, "low": -0.2, "high": 0.37}, {"id": 3, "mean": 0.03, "low": 0, "hi)
All predictions computed. Submitting answers — pinned-phase medians for the deterministic contracts, mode-weighted hedges with wide intervals for the bimodal pulse-train rates:
{"received": 16}
All 16 answers recorded. Now the optional theory bonus — an executable simulator built from my fitted model. Let me generate compact template literals and assemble the theory code:
Close match to observations. The driven first interval is slightly fast (50 vs measured ~58) — tuning the charge time constant:
The model now matches both driven (12/66/111/152 vs measured 14/72/113/153) and post-release behavior (settles at period 72, exactly as measured). Submitting the theory:
One fix needed — the sandbox forbids imports, so I'll replace `import math` with a precomputed constant, then submit:
physim.submit_theory({"code": "TPL={0:[0.6,0.6,0.61,0.62,0.62,0.63,0.64,0.65,0.66,0.67,0.68,0.69,0.7,0.68,0.66,0.63,0.63,0.63,0.63,0.62,0.62,0.61,0.62,0.63,0.63,0.63,0.62,0.61,0.63,0.65,0.67,0.63,0.6,0.56,0.34,0.13,-0.08,)
Everything is submitted — 16 contract answers and the executable theory. Here's a summary of the investigation and what I concluded:

## What the system is

A single **relaxation (spiking) oscillator** drives all sensors. Each of the 36 live channels is a fixed waveform template phase-locked to the spike (channels 2, 16, 17, 39 are dead constants). Crucially, the inputs inject **no DC into any sen
anthropic/claude-fable-5 · C4 seed 0 · tier tools · accuracy 0.23 · calibration 0.33 · theory 0.45 · budget 17%

S1=0.24 · S2=0.16 · S3=0.17 · S4=0.35 · coverage 0.12 · 274 nodes

Narrative experiment log

timeline
  1. 3× free run (950 ticks; 300 ticks, all inputs 0) — ch34 -0.92→+0.44, ch10 +0.27→-0.78, ch31 -0.18→-0.56.
  2. Single-port probe (300 ticks; port 0 at +0.10, 300t) — ch31 -0.56→+0.56, ch34 +0.44→+0.77, ch0 -0.39→-0.58.
  3. ✗ single-port probe rejected: series observation limited to <=6 channels.
  4. 4× single-port probe (1,200 ticks; port 1 at +0.10, 300t) — ch34 -0.80→+0.50, ch0 -0.10→+0.61, ch31 -0.22→+0.08.
  5. Free run (350 ticks; 350 ticks, all inputs 0) — ch0 +0.61→-0.87.
  6. 4× single-port probe (1,400 ticks; port 4 at +0.10, 300t) — ch31 +0.50→-0.57, ch0 -0.32→-0.95, ch10 -0.25→+0.15.
  7. 2× multi-port probe (1,400 ticks; ports [0, 1, 7] at +0.20, 700t).
  8. 2× single-port probe (2,400 ticks; port 0 at +0.12, 1200t).
  9. 3× uniform drive (800 ticks; -1.00 held 350t) — ch34 -0.90→+0.92, ch10 +0.15→-1.31, ch32 +0.55→-0.88.
  10. 4× multi-port probe (4,400 ticks; ports [0, 1, 2, 3] at +0.50, 700t) — ch0 -0.60→-0.79.
  11. Single-port probe (1,600 ticks; port 0 at +0.06, 1600t) — ch0 -0.79→-0.45.
  12. 2× multi-port probe (2,400 ticks; ports [0, 1, 2, 3] at +0.05, 1600t) — ch0 -0.35→+0.58.
  13. 7× free run (2,520 ticks; 360 ticks, all inputs 0) — ch31 -0.90→+0.73, ch21 -0.72→+0.35, ch30 -0.55→+0.49.
  14. 8× single-port probe (2,880 ticks; port 0 at +0.10, 360t) — ch6 -0.91→+0.42, ch10 -1.03→+0.26, ch23 -1.13→+0.12.
  15. Drive → release (3,300 ticks; drive +0.10 for 2500t, release 800t) — ch0 -0.50→+0.70.
  16. Reset to fresh initial conditions (−200 ticks).
  17. Reset to fresh initial conditions (−200 ticks).
  18. Free run (350 ticks; 350 ticks, all inputs 0).
  19. Reset to fresh initial conditions (−200 ticks).
  20. Single-port probe (350 ticks; port 0 at +0.10, 350t).
  21. 2× uniform drive (2,500 ticks; +1.00 held 1300t) — ch0 -0.86→+0.29.
  22. Drive → release (1,500 ticks; drive +0.27 for 1100t, release 400t) — ch0 +0.29→-0.38.
  23. Ramp sweep (800 ticks; 800 ticks, peak mean drive +0.12) — ch0 -0.38→-0.77.
  24. 2× uniform drive (2,000 ticks; +1.00 held 1000t) — ch0 -0.25→+0.36.
  25. 2× drive → release (3,650 ticks; drive +0.12 for 1400t, release 250t).
  26. Closed-loop policy (200 ticks; 200t — "simple test: drive port 0 for first 100 ticks, then stop; count ticks").
  27. Ended exploration → received 16 prediction contracts.
  28. ✗ drive → release rejected: exploration is over; reply with the answers object.
  29. Submitted 16 contract answers.
  30. Submitted 16 contract answers.
  31. Submitted 16 contract answers.
  32. Submitted an executable theory (28,405 chars).

Agent-written files (its instruments & theories)

app/.vf-claude/0b15472ac44b420c81000f17d8be416a/.claude.json (389 chars)
{
  "firstStartTime": "2026-08-14T13:49:53.750Z",
  "machineID": "a6566c7bad5951d54786623f21c1300a48e543760fbd08109a11adee9e24b2ed",
  "opusProMigrationComplete": true,
  "sonnet1m45MigrationComplete": true,
  "seenNotifications": {},
  "hasResetAutoModeOptInForDefaultOffer": true,
  "migrationVersion": 13,
  "userID": "4d0c46599a3d9e1b0f85ad88fe43b5e15edcbd08d55ffa5d703326446da5c0cd"
}
app/physim/analyze1.py (3,044 chars)
import numpy as np

# Run: segments [{350, p7=0.8},{350, p0=p1=0.8}], stride 2 => 350 samples
s = [-0.592, -0.389, -0.449, -0.272, 0.258, 1.248, 2.223, 2.178, 1.82, 1.031, -0.307, -1.155, -1.293, -1.223, -1.074, -0.961, -0.954, -0.848, -0.759, -0.622, -0.509, -0.492, -0.501, -0.363, -0.282, -0.276, -0.249, -0.289, -0.322, -0.352, -0.529, -0.429, -0.399, -0.441, -0.447, -0.382, -0.303, -0.249, -0.428, -0.435, -0.315, -0.403, -0.295, -0.378, -0.431, -0.359, -0.329, -0.358, -0.355, -0.385, -0.207, 0.361, 1.404, 2.096, 2.086, 1.685, 0.423, -0.837, -1.204, -1.049, -1.144, -1.09, -0.848, -0.88, -0.738, -0.699, -0.653, -0.688, -0.477, -0.343, -0.007, 0.989, 2.031, 2.259, 1.903, 1.196, -0.291, -1.22, -1.196, -0.964, -0.937, -0.972, -0.874, -0.845, -0.722, -0.659, -0.597, -0.434, -0.448, -0.325, -0.063, 0.82, 1.887, 2.147, 2.02, 1.352, 0.048, -1.093, -1.125, -1.07, -1.045, -0.925, -0.975, -0.984, -0.688, -0.804, -0.618, -0.641, -0.465, -0.349, -0.216, 0.462, 1.639, 2.209, 2.172, 1.628, 0.504, -0.82, -1.231, -1.059, -0.967, -1.052, -0.981, -0.856, -0.862, -0.714, -0.631, -0.678, -0.448, -0.451, -0.192, -0.011, 1.118, 2.093, 2.193, 2.01, 1.139, -0.268, -1.172, -1.151, -1.037, -0.992, -0.929, -0.893, -0.892, -0.703, -0.654, -0.616, -0.417, -0.454, -0.343, -0.171, 0.665, 1.677, 2.165, 2.033, 1.667, 0.316, -0.964, -1.22, -1.147, -1.155, -0.973, -0.975, -0.853, -0.834, -0.769, -0.674, -0.589, -0.44, -0.437, -0.224, 0.341, 1.395, 2.199, 2.108, 1.821, 0.886, -0.622, -1.204, -1.169, -1.031, -1.006, -0.947, -0.977, -0.892, -0.741, -0.679, -0.539, -0.472, -0.385, -0.364, -0.076, 0.906, 1.98, 2.15, 2.041, 1.333, -0.017, -1.122, -1.182, -1.06, -0.97, -1.014, -0.938, -0.876, -0.713, -0.686, -0.648, -0.496, -0.427, -0.412, -0.427, -0.305, -0.32, -0.239, 0.242, 1.145, 1.856, 2.149, 1.875, 1.123, -0.302, -1.017, -1.269, -1.201, -1.051, -0.955, -0.836, -0.765, -0.801, -0.767, -0.625, -0.542, -0.398, -0.269, 0.018, 0.976, 1.927, 2.196, 2.024, 1.41, 0.053, -0.941, -1.271, -1.194, -1.08, -1.029, -0.933, -0.873, -0.75, -0.67, -0.554, -0.553, -0.461, -0.449, -0.122, 0.539, 1.636, 2.157, 2.035, 1.686, 0.574, -0.747, -1.301, -1.216, -0.976, -1.07, -0.882, -0.766, -0.815, -0.7, -0.724, -0.611, -0.355, -0.424, -0.292, 0.189, 1.212, 2.09, 2.178, 1.873, 1.034, -0.276, -1.121, -1.22, -1.119, -1.027, -0.895, -0.941, -0.733, -0.691, -0.625, -0.644, -0.505, -0.472, -0.364, -0.016, 0.827, 1.795, 2.268, 1.963, 1.501, 0.229, -1.007, -1.213, -1.171, -1.195, -0.984, -0.945, -0.833, -0.81, -0.77, -0.692, -0.517, -0.409, -0.41, -0.155, 0.421, 1.419, 2.144, 2.1, 1.812, 0.843, -0.453, -1.142, -1.243, -1.153, -1.107, -0.975, -0.898, -0.786, -0.73, -0.552, -0.605, -0.466, -0.416, -0.315, 0.107, 1.019, 1.959, 2.195, 1.939, 1.231, -0.019, -0.99, -1.279, -1.117, -1.116, -0.985]
s = np.array(s)
stride = 2

def spike_onsets(x, stride, thr=0.0):
    # upward crossings of thr
    idx = np.where((x[:-1] < thr) & (x[1:] >= thr))[0] + 1
    return idx * stride

on = spike_onsets(s, stride)
print("onsets (ticks):", on)
print("intervals:", np.diff(on))
app/physim/answer.py (3,436 chars)
import json
import numpy as np
from model import period, THETA, QUIET
import sim
from sim import expand_protocol, render_trace

def spike_times_v(amp, rng, persist_full=35.0, persist_scale=None):
    """Oscillator with drive-duration-dependent persistence.
    persist_scale: if set, persistence = min(persist_full, persist_scale * drive_duration)."""
    n = len(amp)
    ph = rng.uniform(0, 1)
    driven = amp[0] >= THETA
    spikes = []
    state = "norm"
    pause_now = 0.0
    a_prev = amp[0] if amp[0] >= THETA else 1.0
    drive_dur = 0
    persist_until = -1
    jit = rng.normal(0, 0.05)
    for t in range(n):
        a = amp[t]
        if driven and a < THETA:
            if persist_scale is None:
                plen = rng.normal(persist_full, 8)
            else:
                plen = min(persist_full, persist_scale * drive_dur) + rng.normal(0, 3)
            persist_until = t + max(plen, 0)
            state = "persist"
        driven = a >= THETA
        if driven:
            drive_dur += 1
        else:
            drive_dur = 0
        a_eff = a
        if state == "persist" and not driven:
            if t <= persist_until:
                a_eff = a_prev
            else:
                # persistence expired without spike -> pause applies to current cycle
                state = "pause2"
                pause_now = rng.normal(45, 10) if rng.uniform() > 0.2 else rng.normal(5, 8)
        if a >= THETA:
            a_prev = a
            state = "norm"
            pause_now = 0.0
        T = period(a_eff) * (1 + jit * 0.4) + pause_now
        ph += 1.0 / max(T, 5)
        if ph >= 1.0:
            spikes.append(t)
            ph -= 1.0
            jit = rng.normal(0, 0.05)
            if state == "persist":
                state = "pause"
                pause_now = rng.normal(45, 10) if rng.uniform() > 0.2 else rng.normal(5, 8)
            elif state in ("pause", "pause2"):
                state = "norm"
                pause_now = 0.0
    return np.array(spikes, int)

def build_segments(c):
    if "segments" in c:
        return c["segments"]
    p = c["pulse10"]
    segs = []
    for i in range(p["total"]):
        a = p["pulses"].get(str(i), 0.0)
        segs.append({"t": 10, "u": [a] + [0.0] * 7})
    return segs

def mc_stat(c, variant, n_mc=500, seed=0):
    rng = np.random.default_rng(seed)
    segs = build_segments(c)
    amp = expand_protocol(segs)
    n = len(amp)
    a, b = n - 20, n
    ch = c["channel"]
    vals = []
    for _ in range(n_mc):
        if variant == "A":
            sp = spike_times_v(amp, rng, persist_full=35.0, persist_scale=None)
        else:
            sp = spike_times_v(amp, rng, persist_full=35.0, persist_scale=0.6)
        if c["stat"] == "rate":
            vals.append(int(np.sum((sp >= a) & (sp < b))))
        else:
            y = render_trace(ch, amp, sp, rng)
            vals.append(y[a:b].mean())
    return np.array(vals, float)

cons = json.load(open("contracts.json"))["contracts"]
out = []
for c in cons:
    sA = mc_stat(c, "A", seed=c["id"] * 7 + 1)
    sB = mc_stat(c, "B", seed=c["id"] * 7 + 2)
    mA, mB = sA.mean(), sB.mean()
    seA = sA.std() / np.sqrt(len(sA))
    print(f"id {c['id']:>2} ch{c['channel']:>2} {c['stat']:>4}: A={mA:.4f} B={mB:.4f} (se~{seA:.3f})")
    out.append(dict(id=c["id"], stat=c["stat"], A=float(mA), B=float(mB), se=float(seA)))
json.dump(out, open("data/answers_raw.json", "w"), indent=1)
app/physim/build_theory.py (4,885 chars)
import json
import numpy as np

waves = {int(k): v for k, v in json.load(open("data/waves.json")).items()}

WB = {}
WD = {}
for ch, w in waves.items():
    WB[ch] = [round(float(x), 3) for x in w["base"]]
    WD[ch] = [round(float(x), 3) for x in w["drv"]]

QUIET_LEV = {2: 0.032, 5: -0.130, 9: 0.092, 17: -0.216}

code = f'''
import math
import numpy as np

WB = {json.dumps(WB)}
WD = {json.dumps(WD)}
QUIET = {json.dumps(QUIET_LEV)}
WB = {{int(k): np.array(v) for k, v in WB.items()}}
WD = {{int(k): np.array(v) for k, v in WD.items()}}
QUIET = {{int(k): v for k, v in QUIET.items()}}

TB, TD = 82.5, 40.5
THETA = 0.26
SPIKE_LEN, RISE = 16, 8
TX = [0.0, 0.26, 0.27, 0.30, 0.35, 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, 1.00]
TY = [82.5, 82.5, 48.0, 47.0, 45.5, 45.0, 43.5, 42.0, 41.2, 40.5, 40.0, 39.5]

def period(a):
    if a < THETA:
        return 82.5
    return float(np.interp(a, TX, TY))

def render(ch, dt_prev, T):
    wb, wd = WB[ch], WD[ch]
    lam = min(max((TB - T) / (TB - TD), 0.0), 1.0)
    if dt_prev <= SPIKE_LEN:
        i = int(dt_prev)
        return (1 - lam) * wb[i] + lam * wd[min(i, len(wd) - 1)]
    span = max(T - SPIKE_LEN, 1)
    s = min(max((dt_prev - SPIKE_LEN) / span, 0.0), 1.0)
    ib = SPIKE_LEN + s * (TB - SPIKE_LEN)
    idn = SPIKE_LEN + s * (TD - SPIKE_LEN)
    vb = np.interp(ib, np.arange(len(wb)), wb)
    vd = np.interp(idn, np.arange(len(wd)), wd)
    return (1 - lam) * vb + lam * vd

def init(y_history):
    # estimate ticks-since-last-spike (phase) from recent sensor readings
    dt0 = 41.0
    try:
        yh = np.asarray(y_history, dtype=float)
        if yh.ndim == 1:
            yh = yh.reshape(1, -1)
        if yh.shape[0] > 0 and yh.shape[1] >= 40:
            chs = [0, 10, 13, 31, 34, 33, 27, 18]
            last = yh[-1]
            best, bestc = None, 1e18
            for dt in range(0, 83):
                c = 0.0
                for ch in chs:
                    c += (last[ch] - render(ch, dt, TB)) ** 2
                if c < bestc:
                    bestc, best = c, dt
            dt0 = float(best)
    except Exception:
        pass
    state = {{"dt": dt0, "ph": min(dt0 / TB, 0.999), "mode": 0, "pause": 0.0,
              "aprev": 1.0, "T": TB}}
    return state

def step(state, a):
    try:
        amax = max([float(x) for x in a] + [0.0])
    except Exception:
        amax = 0.0
    driven_now = amax >= THETA
    was_driven = state.get("drv", False)
    if was_driven and not driven_now:
        state["mode"] = 1          # persist
        state["persist_left"] = 30
    state["drv"] = driven_now
    a_eff = amax
    if state["mode"] == 1 and not driven_now:
        if state.get("persist_left", 0) > 0:
            a_eff = max(amax, state.get("aprev", 0.8))
            state["persist_left"] = state.get("persist_left", 0) - 1
        else:
            state["mode"] = 2
            state["pause"] = 45.0
    if driven_now:
        state["aprev"] = amax
        state["mode"] = 0
        state["pause"] = 0.0
    T = period(a_eff) + state.get("pause", 0.0)
    state["T"] = T
    state["ph"] = state.get("ph", 0.5) + 1.0 / max(T, 5.0)
    state["dt"] = state.get("dt", 40.0) + 1.0
    if state["ph"] >= 1.0:
        state["ph"] -= 1.0
        state["dt"] = 0.0
        if state["mode"] == 1:
            state["mode"] = 2
            state["pause"] = 45.0
        elif state["mode"] == 2:
            state["mode"] = 0
            state["pause"] = 0.0
    dt = state["dt"]
    Tr = period(a_eff)
    y = []
    for ch in range(40):
        if ch in QUIET:
            y.append(QUIET[ch])
        else:
            # approaching next spike: rise ramp
            rem = (1.0 - state["ph"]) * max(T, 5.0)
            if rem <= RISE:
                wb, wd = WB[ch], WD[ch]
                lam = min(max((TB - Tr) / (TB - TD), 0.0), 1.0)
                vb = wb[int(len(wb) - rem) % len(wb)]
                vd = wd[int(len(wd) - rem) % len(wd)]
                y.append(float((1 - lam) * vb + lam * vd))
            else:
                y.append(float(render(ch, dt, Tr)))
    return state, y
'''

open("theory_code.py", "w").write(code)
print("bytes:", len(code))

# local test
ns = {}
exec(code, ns)
init, step = ns["init"], ns["step"]
hist = [[0.0] * 40 for _ in range(5)]
st = init(hist)
ys = []
for t in range(300):
    st, y = step(st, [0.8] + [0] * 7)
    ys.append(y)
ys = np.array(ys)
print("ch0 driven trace mean %.3f  min %.2f max %.2f" % (ys[:, 0].mean(), ys[:, 0].min(), ys[:, 0].max()))
sp = np.where((ys[:-1, 0] < 0) & (ys[1:, 0] >= 0))[0]
print("ch0 spike intervals:", np.diff(sp))
st2 = init(hist)
ys2 = []
for t in range(300):
    st2, y = step(st2, [0.0] * 8)
    ys2.append(y)
ys2 = np.array(ys2)
sp2 = np.where((ys2[:-1, 0] < 0) & (ys2[1:, 0] >= 0))[0]
print("ch0 baseline intervals:", np.diff(sp2))
print("ch5 const:", ys2[:, 5].mean(), " ch39 mean:", ys2[:, 39].mean().round(3))
app/physim/contracts.json (3,182 chars)
{"contracts": [
 {"id": 0, "segments": [{"t": 300, "u": [0,0,0,0,0,0,0,0]}], "channel": 39, "stat": "mean"},
 {"id": 1, "segments": [{"t": 297, "u": [0,0,0,0,0,0,0,0]}], "channel": 21, "stat": "rate"},
 {"id": 2, "segments": [{"t": 320, "u": [0,0,0,0,0,0,0,0]}], "channel": 12, "stat": "mean"},
 {"id": 3, "segments": [{"t": 371, "u": [0,0,0,0,0,0,0,0]}], "channel": 20, "stat": "rate"},
 {"id": 4, "segments": [{"t": 393, "u": [0,0,0,0,0.814,0,0,0]}], "channel": 15, "stat": "mean"},
 {"id": 5, "segments": [{"t": 342, "u": [0,0,0,0.985,0,0,0,0]}], "channel": 24, "stat": "rate"},
 {"id": 6, "segments": [{"t": 420, "u": [0,0.923,0,0,0,0,0,0]}], "channel": 21, "stat": "mean"},
 {"id": 7, "segments": [{"t": 419, "u": [0,0,0,0,0,0,0.868,0]}], "channel": 3, "stat": "rate"},
 {"id": 8, "segments": [{"t": 8, "u": [1,0,0,0,0,0,0,0]}, {"t": 96, "u": [0,0,0,0,0,0,0,0]},
                        {"t": 8, "u": [1,0,0,0,0,0,0,0]}, {"t": 96, "u": [0,0,0,0,0,0,0,0]},
                        {"t": 8, "u": [1,0,0,0,0,0,0,0]}, {"t": 96, "u": [0,0,0,0,0,0,0,0]},
                        {"t": 187, "u": [0,0,0,0,0,0,0,0]}], "channel": 11, "stat": "mean"},
 {"id": 9, "segments": [{"t": 8, "u": [0,0,0,0,0,0,0,1]}, {"t": 84, "u": [0,0,0,0,0,0,0,0]},
                        {"t": 8, "u": [0,0,0,0,0,0,0,1]}, {"t": 84, "u": [0,0,0,0,0,0,0,0]},
                        {"t": 8, "u": [0,0,0,0,0,0,0,1]}, {"t": 84, "u": [0,0,0,0,0,0,0,0]},
                        {"t": 116, "u": [0,0,0,0,0,0,0,0]}], "channel": 25, "stat": "rate"},
 {"id": 10, "segments": [{"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 64, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 64, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 64, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 64, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 64, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 128, "u": [0,0,0,0,0,0,0,0]}], "channel": 15, "stat": "mean"},
 {"id": 11, "segments": [{"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 69, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 69, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 69, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 8, "u": [0,0,0,0,0,1,0,0]}, {"t": 69, "u": [0,0,0,0,0,0,0,0]},
                         {"t": 136, "u": [0,0,0,0,0,0,0,0]}], "channel": 26, "stat": "rate"},
 {"id": 12, "pulse10": {"total": 42, "pulses": {"0": 1.0, "19": 1.0, "22": 1.0, "25": 1.0, "29": 1.0, "31": 1.0, "36": 1.0, "37": 1.0}},
  "channel": 20, "stat": "mean"},
 {"id": 13, "pulse10": {"total": 42, "pulses": {"0": 1.0, "9": 1.0, "18": 1.0, "28": 1.0, "35": 1.0, "37": 1.0}},
  "channel": 26, "stat": "rate"},
 {"id": 14, "pulse10": {"total": 42, "pulses": {"0": 1.0, "11": 1.0, "17": 1.0, "25": 1.0, "32": 1.0, "33": 1.0, "41": 1.0}},
  "channel": 14, "stat": "mean"},
 {"id": 15, "pulse10": {"total": 42, "pulses": {"0": 1.0, "22": 1.0, "29": 1.0, "31": 1.0, "36": 1.0, "41": 1.0}},
  "channel": 4, "stat": "rate"}
]}
app/physim/data/answers_raw.json (1,720 chars)
[
 {
  "id": 0,
  "stat": "mean",
  "A": -0.2378960893271413,
  "B": -0.2374003747416889,
  "se": 0.01138020441821147
 },
 {
  "id": 1,
  "stat": "rate",
  "A": 0.252,
  "B": 0.212,
  "se": 0.019416281827373642
 },
 {
  "id": 2,
  "stat": "mean",
  "A": -0.3815379837173543,
  "B": -0.3890344803527042,
  "se": 0.015577441390554227
 },
 {
  "id": 3,
  "stat": "rate",
  "A": 0.282,
  "B": 0.226,
  "se": 0.020123419192572614
 },
 {
  "id": 4,
  "stat": "mean",
  "A": -0.1459827812217587,
  "B": -0.13158804829851142,
  "se": 0.017028609823463846
 },
 {
  "id": 5,
  "stat": "rate",
  "A": 0.518,
  "B": 0.536,
  "se": 0.022346185356789644
 },
 {
  "id": 6,
  "stat": "mean",
  "A": -0.36103383022930574,
  "B": -0.34757572524761493,
  "se": 0.02254807021643157
 },
 {
  "id": 7,
  "stat": "rate",
  "A": 0.5,
  "B": 0.512,
  "se": 0.022360679774997897
 },
 {
  "id": 8,
  "stat": "mean",
  "A": 0.08401786239358974,
  "B": 0.036117943921467555,
  "se": 0.012279270396655178
 },
 {
  "id": 9,
  "stat": "rate",
  "A": 0.126,
  "B": 0.258,
  "se": 0.014840754697790809
 },
 {
  "id": 10,
  "stat": "mean",
  "A": -0.17844735620347796,
  "B": -0.05380494599852464,
  "se": 0.010220676088632212
 },
 {
  "id": 11,
  "stat": "rate",
  "A": 0.114,
  "B": 0.314,
  "se": 0.014212951839783317
 },
 {
  "id": 12,
  "stat": "mean",
  "A": -0.7339599508570818,
  "B": -0.5554460153002229,
  "se": 0.004591243954822178
 },
 {
  "id": 13,
  "stat": "rate",
  "A": 0.678,
  "B": 0.192,
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app/physim/data/base_g0.json (2,885 chars)
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app/physim/data/base_g1.json (2,790 chars)
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app/physim/data/base_g2.json (2,916 chars)
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app/physim/data/base_g3.json (2,886 chars)
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app/physim/data/base_g4.json (2,799 chars)
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app/physim/data/drv_g0.json (2,852 chars)
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app/physim/data/drv_g1.json (2,789 chars)
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app/physim/data/drv_g2.json (2,869 chars)
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app/physim/data/drv_g3.json (2,862 chars)
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app/physim/data/drv_g4.json (2,799 chars)
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app/physim/data/drv_g5.json (2,837 chars)
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app/physim/data/drv_g6.json (2,781 chars)
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app/physim/fit_channels.py (1,111 chars)
import json, glob
import numpy as np

def load(cond):
    out = {}
    for f in sorted(glob.glob(f"data/{cond}_g*.json")):
        d = json.load(open(f))
        for ch, s in d["series"].items():
            out[int(ch)] = np.array(s, float)
    return out

base = load("base")
drv = load("drv")

print(f"{'ch':>3} {'b_mean':>7} {'b_sd':>6} {'b_min':>6} {'b_max':>6} {'quiet':>6} | {'d_mean':>7} {'d_sd':>6} {'d_min':>6} {'d_max':>6}")
rows = {}
for ch in sorted(base):
    b, d = base[ch], drv[ch]
    # quiet level: median of middle 50% (robust to spikes)
    qb = np.median(b)
    rows[ch] = dict(
        b_mean=float(b.mean()), b_sd=float(b.std()), b_min=float(b.min()), b_max=float(b.max()), b_med=float(qb),
        d_mean=float(d.mean()), d_sd=float(d.std()), d_min=float(d.min()), d_max=float(d.max()), d_med=float(np.median(d)),
    )
    r = rows[ch]
    print(f"{ch:>3} {r['b_mean']:>7.3f} {r['b_sd']:>6.3f} {r['b_min']:>6.2f} {r['b_max']:>6.2f} {qb:>6.2f} | {r['d_mean']:>7.3f} {r['d_sd']:>6.3f} {r['d_min']:>6.2f} {r['d_max']:>6.2f}")

json.dump(rows, open("data/chan_stats.json", "w"), indent=1)
app/physim/model.py (4,350 chars)
"""Generative model of the hidden system.

Structure discovered by experiment:
- One global relaxation oscillator. Period depends on the MAX rectified port
  input a = max_p u_p (ports interchangeable; u < theta does nothing;
  no summation across ports).
    T(0) = 82.5;  T(a): 0.27->48, 0.3->47, 0.35->45.5, 0.4->45, 0.5->43.5,
    0.6->42, 0.8->40.5, 1.0->39.5   (per-interval jitter sd ~2 ticks)
- Threshold theta ~ 0.26 (sharp).
- On release (a drops below theta after driving): one extra-long interval
  (~+40 ticks, observed pauses 100-130), then normal.
- No slow adaptation; fresh draws only randomize phase.
- 36 spiking channels: fixed per-channel pulse waveform locked to the
  oscillator (each channel has its own delay - irrelevant for single-channel
  stats with random phase), plus baseline + iid noise (sd ~0.05-0.1).
- 4 quiet channels: 2, 5, 9, 17 (constant level + noise, input-independent).
"""
import json, glob
import numpy as np

THETA = 0.26
# amplitude -> period lookup (measured)
T_TAB = [(0.0, 82.5), (0.26, 82.5), (0.27, 48.0), (0.30, 47.0), (0.35, 45.5),
         (0.40, 45.0), (0.50, 43.5), (0.60, 42.0), (0.70, 41.2), (0.80, 40.5),
         (0.90, 40.0), (1.00, 39.5)]

def period(a):
    if a < THETA:
        return 82.5
    xs = [x for x, _ in T_TAB]
    ys = [y for _, y in T_TAB]
    return float(np.interp(a, xs, ys))

# ---------------- waveform extraction ----------------

def load(cond):
    out = {}
    for f in sorted(glob.glob(f"data/{cond}_g*.json")):
        d = json.load(open(f))
        for ch, s in d["series"].items():
            out[int(ch)] = (np.array(s, float), d["stride"])
    return out

QUIET = {2, 5, 9, 17}

def extract_waveform(series, stride, T, wlen=None):
    """Spike-align and average onto a 1-tick grid over one cycle length T."""
    x = np.asarray(series, float)
    n = len(x)
    t = np.arange(n) * stride
    # find event times via extreme deviation from median
    med = np.median(x)
    dev = x - med
    amp = np.max(np.abs(dev))
    sign = 1 if abs(np.max(dev)) >= abs(np.min(dev)) else -1
    sd = np.median(np.abs(dev)) * 1.48
    thr = 0.5 * amp
    events = []
    i = 0
    while i < n:
        if sign * dev[i] > thr:
            j = i
            while j + 1 < n and sign * dev[j + 1] > thr:
                j += 1
            # subgrid peak: parabola on the extreme sample
            k = i + int(np.argmax(sign * dev[i:j + 1]))
            tk = t[k]
            if 0 < k < n - 1:
                y0, y1, y2 = sign * dev[k - 1], sign * dev[k], sign * dev[k + 1]
                den = (y0 - 2 * y1 + y2)
                if den != 0:
                    tk = t[k] + 0.5 * (y0 - y2) / den * stride
            events.append(tk)
            i = j + 1
        else:
            i += 1
    if len(events) < 2:
        return None, events
    # pool phases
    Tcyc = int(round(T))
    grid = np.full(Tcyc, np.nan)
    cnt = np.zeros(Tcyc)
    acc = np.zeros(Tcyc)
    for k in range(n):
        # offset to nearest preceding event
        evs = [e for e in events]
        d = [(t[k] - e) % T for e in evs if abs(((t[k] - e + T / 2) % T) - T / 2) < T]
        if not events:
            continue
        ph = (t[k] - events[0]) % T
        b = int(ph) % Tcyc
        acc[b] += x[k]
        cnt[b] += 1
    with np.errstate(invalid="ignore"):
        grid = acc / np.maximum(cnt, 1)
    grid[cnt == 0] = np.nan
    # fill gaps by interpolation
    idx = np.arange(Tcyc)
    good = ~np.isnan(grid)
    if good.sum() >= 2:
        grid = np.interp(idx, idx[good], grid[good], period=Tcyc)
    return grid, events

if __name__ == "__main__":
    base = load("base")
    drv = load("drv")
    waves = {}
    for ch in sorted(base):
        if ch in QUIET:
            continue
        gb, eb = extract_waveform(*base[ch], 82.5)
        gd, ed = extract_waveform(*drv[ch], 40.5)
        waves[ch] = dict(base=gb.tolist() if gb is not None else None,
                         drv=gd.tolist() if gd is not None else None,
                         n_ev_base=len(eb), n_ev_drv=len(ed))
        print(ch, len(eb), len(ed),
              None if gb is None else (round(float(np.nanmin(gb)),2), round(float(np.nanmax(gb)),2)),
              None if gd is None else (round(float(np.nanmin(gd)),2), round(float(np.nanmax(gd)),2)))
    json.dump(waves, open("data/waves.json", "w"))
app/physim/refit.py (2,442 chars)
import json
import numpy as np
from model import load, QUIET

def detect_events(x, t, stride):
    """Event = interpolated peak time of the channel's dominant excursion."""
    med = np.median(x)
    dev = x - med
    sign = 1 if abs(dev.max()) >= abs(dev.min()) else -1
    thr = 0.5 * max(sign * dev)
    events = []
    i, n = 0, len(x)
    while i < n:
        if sign * dev[i] > thr:
            j = i
            while j + 1 < n and sign * dev[j + 1] > thr:
                j += 1
            k = i + int(np.argmax(sign * dev[i:j + 1]))
            tk = t[k]
            if 0 < k < n - 1:
                y0, y1, y2 = sign * dev[k - 1], sign * dev[k], sign * dev[k + 1]
                den = y0 - 2 * y1 + y2
                if den != 0:
                    tk = t[k] + 0.5 * (y0 - y2) / den * stride
            events.append(tk)
            i = j + 1
        else:
            i += 1
    return events

def extract(series, stride, T):
    x = np.asarray(series, float)
    n = len(x)
    t = np.arange(n) * stride
    events = detect_events(x, t, stride)
    if len(events) < 2:
        return None
    Tcyc = int(round(T))
    acc = np.zeros(Tcyc)
    cnt = np.zeros(Tcyc)
    for k in range(n):
        prev = [e for e in events if e <= t[k] + 2]
        if not prev:
            continue
        dt = t[k] - prev[-1]
        if dt >= Tcyc:
            # only use if within one cycle of an event; else fold modulo cycle
            if dt < 2 * Tcyc:
                dt = dt - Tcyc
            else:
                continue
        b = int(dt) % Tcyc
        acc[b] += x[k]
        cnt[b] += 1
    grid = np.where(cnt > 0, acc / np.maximum(cnt, 1), np.nan)
    idx = np.arange(Tcyc)
    good = ~np.isnan(grid)
    if good.sum() < 5:
        return None
    grid = np.interp(idx, idx[good], grid[good], period=Tcyc)
    # light smoothing on the recovery part only (keep spike sharp)
    sm = grid.copy()
    for i in range(18, Tcyc - 2):
        sm[i] = grid[max(i-1,0):i+2].mean()
    return sm

base = load("base")
drv = load("drv")
waves = {}
for ch in sorted(base):
    if ch in QUIET:
        continue
    gb = extract(*base[ch], 82.5)
    gd = extract(*drv[ch], 40.5)
    waves[ch] = dict(base=gb.tolist(), drv=gd.tolist())
    print(ch, "base rng (%.2f, %.2f) mean %.3f | drv rng (%.2f, %.2f) mean %.3f" % (
        gb.min(), gb.max(), gb.mean(), gd.min(), gd.max(), gd.mean()))
json.dump(waves, open("data/waves.json", "w"))
app/physim/sim.py (5,985 chars)
"""Monte-Carlo simulator for contract protocols."""
import json
import numpy as np
from model import period, THETA, QUIET, load

waves = {int(k): v for k, v in json.load(open("data/waves.json")).items()}

# quiet channel levels and noise (measured)
QUIET_LEV = {2: 0.032, 5: -0.130, 9: 0.092, 17: -0.216}
QUIET_SD = {2: 0.050, 5: 0.048, 9: 0.052, 17: 0.048}

TB, TD = 82.5, 40.5
SPIKE_LEN = 16   # ticks after peak that are "spike shape" (top+fall+dip)
RISE = 8         # ticks before peak that are rise

def render_value(ch, dt_prev, dt_next, T):
    """Value for channel ch, dt_prev ticks after last peak, dt_next before next."""
    wb = np.array(waves[ch]["base"])
    wd = np.array(waves[ch]["drv"])
    lam = np.clip((TB - T) / (TB - TD), 0, 1)
    if dt_next is not None and dt_next <= RISE:
        # rising edge of next spike (same in both conditions)
        vb = wb[int(len(wb) - dt_next) % len(wb)]
        vd = wd[int(len(wd) - dt_next) % len(wd)]
        return (1 - lam) * vb + lam * vd
    if dt_prev <= SPIKE_LEN:
        i = int(dt_prev)
        return (1 - lam) * wb[i] + lam * wd[min(i, len(wd) - 1)]
    # recovery: normalized position between spike end and next rise
    span = max(T - SPIKE_LEN - RISE, 1)
    s = np.clip((dt_prev - SPIKE_LEN) / span, 0, 1)
    ib = SPIKE_LEN + s * (TB - SPIKE_LEN - RISE)
    idn = SPIKE_LEN + s * (TD - SPIKE_LEN - RISE)
    vb = np.interp(ib, np.arange(len(wb)), wb)
    vd = np.interp(idn, np.arange(len(wd)), wd)
    return (1 - lam) * vb + lam * vd

def noise_sd(ch):
    if ch in QUIET_SD:
        return QUIET_SD[ch]
    return 0.07

def expand_protocol(segments, n_in=8):
    """segments: list of dicts with t and u or u_start/u_end -> per-tick max-amp array."""
    amps = []
    for seg in segments:
        t = int(seg["t"])
        if "u" in seg:
            a = np.full(t, max(0.0, max(seg["u"])))
        else:
            us, ue = np.array(seg["u_start"], float), np.array(seg["u_end"], float)
            frac = np.arange(t) / max(t - 1, 1)
            uu = us[None, :] + frac[:, None] * (ue - us)[None, :]
            a = np.maximum(0.0, uu.max(axis=1))
        amps.append(a)
    return np.concatenate(amps)

def spike_times(amp, rng, phase0=None):
    """Simulate oscillator: returns array of spike (peak) times.

    Release dynamics (measured): when drive drops below threshold,
    the drive effect persists ~35 ticks (current cycle completes at the
    driven rate), then ONE long cycle (~+45 ticks vs baseline, i.e. ~128
    total; sometimes instead a short pause + doublet), then normal.
    """
    n = len(amp)
    ph = rng.uniform(0, 1) if phase0 is None else phase0
    driven = amp[0] >= THETA
    spikes = []
    state = "norm"        # norm | persist | pause
    pause_now = 0.0
    a_prev = amp[0] if amp[0] >= THETA else 0.8
    jit = rng.normal(0, 0.05)
    for t in range(n):
        a = amp[t]
        if driven and a < THETA:
            state = "persist"
        driven = a >= THETA
        a_eff = a
        if state == "persist" and not driven:
            a_eff = a_prev          # drive persists until next spike
        if a >= THETA:
            a_prev = a
            state = "norm"
            pause_now = 0.0
        T = period(a_eff) * (1 + jit * 0.4) + pause_now
        ph += 1.0 / max(T, 5)
        if ph >= 1.0:
            spikes.append(t)
            ph -= 1.0
            jit = rng.normal(0, 0.05)
            if state == "persist":
                state = "pause"
                if rng.uniform() < 0.2:
                    pause_now = rng.normal(5, 8)      # occasional weak pause
                else:
                    pause_now = rng.normal(45, 10)    # one long cycle (~128)
            elif state == "pause":
                state = "norm"
                pause_now = 0.0
    return np.array(spikes, int)

def render_trace(ch, amp, spikes, rng, with_noise=True):
    n = len(amp)
    y = np.empty(n)
    if ch in QUIET:
        y[:] = QUIET_LEV[ch]
    else:
        sp = spikes
        j = 0
        for t in range(n):
            # find prev and next spike
            while j < len(sp) and sp[j] <= t:
                j += 1
            prev = sp[j - 1] if j > 0 else None
            nxt = sp[j] if j < len(sp) else None
            T = period(amp[t])
            if prev is None:
                dtp = 999
            else:
                dtp = t - prev
            dtn = None if nxt is None else nxt - t
            y[t] = render_value(ch, dtp, dtn, T)
    if with_noise:
        y = y + rng.normal(0, noise_sd(ch), n)
    return y

def predict(segments, ch, stat, window, n_mc=300, thr=None, seed=0):
    """stat: 'mean' | 'sd' | 'count'; window: (start, end) ticks (absolute).
    Returns samples of the statistic."""
    rng = np.random.default_rng(seed)
    amp = expand_protocol(segments)
    a, b = window
    vals = []
    for _ in range(n_mc):
        sp = spike_times(amp, rng)
        y = render_trace(ch, amp, sp, rng)
        w = y[a:b]
        if stat == "mean":
            vals.append(w.mean())
        elif stat == "sd":
            vals.append(w.std())
        elif stat == "count":
            x = w
            up = np.sum((x[:-1] < thr) & (x[1:] >= thr))
            vals.append(up)
    return np.array(vals)

if __name__ == "__main__":
    # self-test protocol
    segs = [{"t": 250, "u": [0]*8},
            {"t": 300, "u": [0,0,0,0.5,0,0,0,0]},
            {"t": 250, "u": [0]*8},
            {"t": 200, "u": [1]*8}]
    total = 1000
    for ch in [0, 34, 27, 5]:
        m = predict(segs, ch, "mean", (980, 1000), 200)
        s = predict(segs, ch, "sd", (800, 1000), 100)
        print(f"ch{ch}: tail20 mean {np.mean(m):.3f} [{np.quantile(m,0.05):.3f},{np.quantile(m,0.95):.3f}]"
              f"  sd200 {np.mean(s):.3f} [{np.quantile(s,0.05):.3f},{np.quantile(s,0.95):.3f}]")
    c = predict(segs, 0, "count", (800, 1000), 200, thr=1.0)
    print("ch0 upcross(1.0) in [800,1000):", np.mean(c), np.quantile(c, [0.05, 0.5, 0.95]))
app/physim/spk.py (1,110 chars)
import numpy as np, json, sys

def onsets(series, stride, thr=0.0, hyst=-0.5):
    """Upward crossings of thr, requiring a prior dip below hyst (armed)."""
    x = np.asarray(series, float)
    on = []
    armed = x[0] < thr
    for i in range(1, len(x)):
        if not armed and x[i] < hyst:
            armed = True
        if armed and x[i-1] < thr <= x[i]:
            on.append(i * stride)
            armed = False
    return np.array(on)

def report(series, stride, seg_bounds=None, thr=0.0):
    on = onsets(series, stride, thr)
    iv = np.diff(on)
    print("onsets:", on.tolist())
    print("intervals:", iv.tolist())
    if seg_bounds:
        for a, b in zip(seg_bounds[:-1], seg_bounds[1:]):
            sel = on[(on >= a) & (on < b)]
            if len(sel) > 1:
                d = np.diff(sel)
                print(f"seg [{a},{b}): n={len(sel)}, T mean={d.mean():.1f}, last3={d[-3:].tolist()}")
            else:
                print(f"seg [{a},{b}): n={len(sel)} spikes")

if __name__ == "__main__":
    d = json.load(open(sys.argv[1]))
    report(d["series"], d["stride"], d.get("segs"))
app/physim/theory_code.py (37,241 chars)
import math
import numpy as np

WB = {"0": [2.206, 1.419, 0.633, 0.313, -0.006, -0.326, -0.646, -0.73, -0.815, -0.877, -0.938, -0.999, -1.061, -0.835, -0.61, -0.689, -0.768, -0.848, -0.89, -0.895, -0.857, -0.812, -0.761, -0.709, -0.652, -0.588, -0.535, -0.498, -0.477, -0.457, -0.441, -0.428, -0.413, -0.39, -0.36, -0.33, -0.308, -0.294, -0.291, -0.291, -0.293, -0.296, -0.322, -0.371, -0.414, -0.427, -0.41, -0.393, -0.402, -0.438, -0.467, -0.463, -0.428, -0.392, -0.351, -0.305, -0.28, -0.283, -0.314, -0.344, -0.367, -0.382, -0.39, -0.397, -0.405, -0.412, -0.416, -0.415, -0.41, -0.405, -0.4, -0.396, -0.338, -0.228, -0.065, 0.098, 0.262, 0.425, 0.668, 0.992, 1.397, 1.801], "1": [1.292, 1.354, 1.118, 0.882, 0.608, 0.333, -0.03, -0.429, -0.559, -0.69, -0.669, -0.648, -0.615, -0.555, -0.539, -0.523, -0.509, -0.495, -0.465, -0.455, -0.464, -0.411, -0.361, -0.338, -0.311, -0.302, -0.289, -0.298, -0.306, -0.288, -0.26, -0.2, -0.133, -0.09, -0.095, -0.127, -0.121, -0.095, -0.069, -0.062, -0.058, -0.083, -0.115, -0.163, -0.201, -0.215, -0.201, -0.203, -0.202, -0.215, -0.197, -0.188, -0.173, -0.156, -0.161, -0.187, -0.229, -0.22, -0.163, -0.136, -0.12, -0.144, -0.129, -0.146, -0.162, -0.173, -0.17, -0.155, -0.135, -0.151, -0.199, -0.212, -0.215, -0.167, -0.134, 0.008, 0.214, 0.602, 0.868, 1.074, 1.105, 1.198], "3": [1.333, 1.202, 1.087, 0.881, 0.675, 0.469, -0.051, -0.572, -0.603, -0.597, -0.59, -0.584, -0.505, -0.427, -0.452, -0.456, -0.46, -0.464, -0.385, -0.363, -0.357, -0.365, -0.331, -0.303, -0.28, -0.247, -0.218, -0.191, -0.185, -0.171, -0.149, -0.114, -0.084, -0.058, -0.041, -0.035, -0.038, -0.047, -0.045, -0.034, -0.02, -0.024, -0.047, -0.09, -0.104, -0.09, -0.045, -0.034, -0.058, -0.106, -0.134, -0.141, -0.138, -0.11, -0.057, -0.034, -0.037, -0.066, -0.066, -0.07, -0.078, -0.085, -0.097, -0.113, -0.137, -0.149, -0.149, -0.117, -0.093, -0.078, -0.093, -0.106, -0.116, 0.036, 0.2, 0.374, 0.397, 0.503, 0.692, 0.914, 1.087, 1.21], "4": [1.437, 1.335, 1.108, -0.147, 0.007, 0.161, -0.514, -0.845, -0.866, -0.855, -0.845, -0.834, -0.765, -0.763, -0.783, -0.746, -0.708, -0.671, -0.654, -0.645, -0.638, -0.604, -0.565, -0.572, -0.505, -0.473, -0.405, -0.422, -0.414, -0.38, -0.322, -0.274, -0.257, -0.269, -0.275, -0.254, -0.238, -0.202, -0.197, -0.194, -0.216, -0.255, -0.272, -0.301, -0.315, -0.353, -0.38, -0.363, -0.36, -0.322, -0.318, -0.289, -0.282, -0.295, -0.284, -0.275, -0.251, -0.255, -0.263, -0.258, -0.26, -0.25, -0.263, -0.28, -0.32, -0.313, -0.294, -0.28, -0.307, -0.339, -0.36, -0.332, -0.326, -0.246, -0.169, -0.022, 0.099, 0.41, 0.285, 0.311, 0.296, 0.866], "6": [1.923, 1.736, 1.414, 1.092, 0.511, -0.07, -0.648, -1.227, -1.194, -1.162, -1.099, -1.035, -0.974, -0.913, -0.942, -0.97, -1.002, -1.034, -0.97, -0.922, -0.889, -0.857, -0.81, -0.746, -0.676, -0.638, -0.635, -0.64, -0.619, -0.579, -0.548, -0.511, -0.459, -0.404, -0.361, -0.342, -0.335, -0.336, -0.332, -0.343, -0.373, -0.411, -0.438, -0.46, -0.488, -0.51, -0.523, -0.522, -0.517, -0.494, -0.456, -0.426, -0.418, -0.441, -0.472, -0.478, -0.448, -0.399, -0.367, -0.359, -0.359, -0.381, -0.417, -0.446, -0.455, -0.459, -0.479, -0.493, -0.486, -0.475, -0.482, -0.494, -0.49, -0.449, -0.383, -0.184, 0.123, 0.551, 0.99, 1.344, 1.602, 1.762], "7": [-1.643, -1.577, -1.504, -1.255, -1.006, -0.757, 0.181, 0.731, 0.677, 0.695, 0.714, 0.732, 0.656, 0.644, 0.632, 0.594, 0.556, 0.518, 0.479, 0.43, 0.375, 0.385, 0.401, 0.361, 0.302, 0.251, 0.242, 0.24, 0.217, 0.183, 0.115, 0.052, 0.009, 0.01, 0.015, 0.028, 0.036, 0.04, 0.046, 0.068, 0.103, 0.099, 0.104, 0.121, 0.152, 0.148, 0.108, 0.08, 0.087, 0.105, 0.127, 0.129, 0.135, 0.106, 0.069, 0.072, 0.09, 0.097, 0.048, 0.033, 0.026, 0.029, 0.026, 0.043, 0.08, 0.083, 0.08, 0.071, 0.078, 0.073, 0.056, 0.091, 0.096, 0.072, -0.038, -0.153, -0.275, -0.585, -0.902, -1.224, -1.364, -1.504], "8": [1.391, 1.239, 1.059, 0.88, 0.56, 0.241, -0.079, -0.976, -1.127, -1.279, -1.227, -1.174, -1.122, -1.094, -1.084, -1.074, -1.051, -1.027, -1.007, -0.988, -0.971, -0.943, -0.905, -0.858, -0.794, -0.745, -0.709, -0.697, -0.676, -0.646, -0.615, -0.577, -0.533, -0.501, -0.486, -0.489, -0.479, -0.472, -0.469, -0.469, -0.455, -0.427, -0.429, -0.441, -0.464, -0.478, -0.503, -0.538, -0.593, -0.618, -0.614, -0.573, -0.541, -0.519, -0.51, -0.533, -0.587, -0.618, -0.607, -0.556, -0.521, -0.501, -0.493, -0.483, -0.475, -0.467, -0.479, -0.484, -0.484, -0.488, -0.518, -0.577, -0.538, -0.426, -0.24, -0.063, 0.127, 0.33, 0.682, 0.99, 1.253, 1.322], "10": [2.321, 1.959, 1.596, 1.108, 0.62, 0.132, -1.175, -1.533, -1.89, -1.84, -1.79, -1.74, -1.648, -1.54, -1.431, -1.444, -1.458, -1.471, -1.423, -1.383, -1.351, -1.323, -1.296, -1.215, -1.129, -1.038, -1.006, -0.983, -0.968, -0.921, -0.868, -0.809, -0.779, -0.753, -0.729, -0.706, -0.689, -0.677, -0.678, -0.686, -0.703, -0.728, -0.756, -0.787, -0.806, -0.819, -0.826, -0.808, -0.803, -0.811, -0.839, -0.849, -0.839, -0.844, -0.823, -0.776, -0.729, -0.721, -0.751, -0.726, -0.71, -0.704, -0.739, -0.752, -0.742, -0.747, -0.767, -0.803, -0.833, -0.857, -0.875, -0.851, -0.777, -0.654, -0.47, -0.235, 0.053, 0.627, 1.174, 1.696, 1.904, 2.113], "11": [-2.067, -1.766, -1.512, -1.257, -1.003, -0.905, 0.251, 0.917, 0.857, 0.797, 0.737, 0.712, 0.646, 0.639, 0.631, 0.623, 0.615, 0.671, 0.591, 0.541, 0.521, 0.504, 0.478, 0.443, 0.37, 0.311, 0.264, 0.259, 0.251, 0.239, 0.207, 0.173, 0.139, 0.119, 0.106, 0.099, 0.079, 0.06, 0.041, 0.043, 0.041, 0.036, 0.069, 0.108, 0.155, 0.169, 0.186, 0.208, 0.228, 0.23, 0.215, 0.189, 0.174, 0.171, 0.142, 0.107, 0.066, 0.059, 0.077, 0.119, 0.156, 0.166, 0.149, 0.135, 0.133, 0.141, 0.146, 0.15, 0.152, 0.167, 0.15, 0.102, 0.059, -0.008, -0.1, -0.252, -0.479, -0.781, -1.127, -1.439, -1.719, -1.999], "12": [1.44, 1.3, 1.16, 1.02, 0.519, 0.018, -0.76, -0.879, -0.997, -1.115, -1.093, -1.07, -1.091, -1.057, -1.023, -0.989, -0.961, -0.933, -0.909, -0.891, -0.878, -0.838, -0.771, -0.696, -0.655, -0.648, -0.654, -0.661, -0.668, -0.608, -0.535, -0.451, -0.423, -0.407, -0.402, -0.399, -0.391, -0.376, -0.366, -0.379, -0.415, -0.457, -0.479, -0.481, -0.479, -0.49, -0.515, -0.541, -0.553, -0.552, -0.552, -0.548, -0.543, -0.512, -0.484, -0.458, -0.458, -0.457, -0.456, -0.466, -0.474, -0.482, -0.478, -0.466, -0.445, -0.443, -0.449, -0.464, -0.462, -0.456, -0.447, -0.456, -0.452, -0.433, -0.377, -0.257, -0.074, 0.393, 0.807, 1.169, 1.26, 1.35], "13": [2.435, 2.237, 2.04, 1.588, 1.135, 0.683, -0.672, -1.126, -1.579, -1.525, -1.471, -1.417, -1.409, -1.383, -1.357, -1.333, -1.308, -1.284, -1.156, -1.053, -1.0, -0.972, -0.97, -0.935, -0.884, -0.816, -0.774, -0.741, -0.717, -0.671, -0.633, -0.603, -0.574, -0.516, -0.429, -0.381, -0.348, -0.331, -0.32, -0.336, -0.38, -0.423, -0.463, -0.5, -0.533, -0.563, -0.591, -0.628, -0.641, -0.628, -0.595, -0.576, -0.572, -0.535, -0.509, -0.494, -0.519, -0.54, -0.558, -0.506, -0.461, -0.423, -0.444, -0.449, -0.437, -0.429, -0.435, -0.454, -0.488, -0.526, -0.569, -0.579, -0.547, -0.472, -0.351, -0.193, 0.0, 0.528, 1.079, 1.652, 1.913, 2.174], "14": [-1.316, -1.112, -0.905, -0.698, -0.491, -0.081, 0.33, 0.935, 0.947, 0.958, 0.97, 0.887, 0.803, 0.891, 0.836, 0.781, 0.726, 0.771, 0.791, 0.8, 0.798, 0.81, 0.786, 0.725, 0.624, 0.557, 0.523, 0.527, 0.528, 0.525, 0.487, 0.452, 0.42, 0.423, 0.433, 0.451, 0.427, 0.395, 0.353, 0.35, 0.367, 0.403, 0.415, 0.413, 0.396, 0.407, 0.418, 0.428, 0.439, 0.448, 0.455, 0.459, 0.454, 0.44, 0.423, 0.41, 0.402, 0.394, 0.391, 0.394, 0.403, 0.411, 0.417, 0.42, 0.427, 0.435, 0.451, 0.46, 0.465, 0.46, 0.452, 0.441, 0.417, 0.353, 0.248, 0.111, -0.079, -0.324, -0.596, -0.844, -1.066, -1.288], "15": [1.455, 1.257, 1.059, 0.8, 0.541, 0.282, -0.419, -0.598, -0.777, -0.764, -0.751, -0.738, -0.651, -0.667, -0.683, -0.683, -0.684, -0.684, -0.609, -0.563, -0.551, -0.542, -0.535, -0.521, -0.487, -0.432, -0.382, -0.347, -0.329, -0.319, -0.297, -0.263, -0.219, -0.187, -0.166, -0.175, -0.184, -0.195, -0.187, -0.192, -0.207, -0.228, -0.241, -0.245, -0.243, -0.248, -0.259, -0.269, -0.275, -0.278, -0.274, -0.266, -0.252, -0.244, -0.232, 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-0.352, -0.335, -0.336, … [+17,241 chars]
app/physim/theory_final.py (28,407 chars)
import math
import numpy as np

WB = 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WD = {"0":[2.15,2.06,1.82,1.58,1.35,0.64,-0.37,-0.94,-1.19,-1.25,-1.3,-1.24,-1.14,-1.05,-1.1,-1.02,-0.95,-0.94,-0.93,-0.89,-0.85,-0.83,-0.8,-0.74,-0.67,-0.59,-0.56,-0.56,-0.57,-0.55,-0.49,-0.41,-0.34,-0.26,-0.15,0.17,0.68,1.2,1.6,1.87],"1":[1.22,1.28,1.14,1.0,0.63,0.32,-0.16,-0.43,-0.58,-0.74,-0.7,-0.64,-0.64,-0.65,-0.6,-0.54,-0.63,-0.47,-0.49,-0.47,-0.41,-0.43,-0.42,-0.41,-0.34,-0.31,-0.26,-0.25,-0.24,-0.24,-0.21,-0.18,-0.14,-0.06,0.09,0.29,0.6,0.88,1.13,1.31],"3":[1.36,1.29,1.15,1.01,0.67,0.34,-0.26,-0.49,-0.56,-0.63,-0.6,-0.56,-0.59,-0.5,-0.47,-0.44,-0.45,-0.45,-0.46,-0.42,-0.36,-0.32,-0.3,-0.29,-0.27,-0.25,-0.24,-0.23,-0.21,-0.2,-0.17,-0.13,-0.06,0.05,0.21,0.47,0.79,1.06,1.23,1.29],"4":[1.46,1.33,1.2,1.02,0.71,0.21,-0.38,-0.79,-0.84,-0.87,-0.82,-0.76,-0.83,-0.84,-0.82,-0.7,-0.7,-0.7,-0.67,-0.65,-0.61,-0.56,-0.51,-0.47,-0.46,-0.45,-0.44,-0.45,-0.44,-0.38,-0.32,-0.25,-0.23,-0.19,-0.05,0.29,0.7,1.0,1.11,1.38],"6":[1.81,1.6,1.57,1.31,1.04,0.77,-0.27,-1.11,-1.25,-1.21,-1.23,-1.25,-1.17,-1.16,-1.17,-1.09,-1.09,-1.1,-0.99,-0.91,-0.88,-0.86,-0.84,-0.78,-0.71,-0.67,-0.66,-0.67,-0.66,-0.63,-0.54,-0.46,-0.35,-0.27,-0.11,0.23,0.79,1.28,1.51,1.66],"7":[-1.76,-1.64,-1.4,-1.19,-0.99,-0.4,-0.01,0.52,0.77,0.74,0.72,0.58,0.68,0.62,0.62,0.66,0.7,0.53,0.46,0.41,0.36,0.33,0.32,0.32,0.33,0.29,0.27,0.26,0.23,0.19,0.13,0.1,0.07,0.04,-0.1,-0.36,-0.8,-1.19,-1.51,-1.71],"8":[1.39,1.28,1.03,0.8,0.57,-0.04,-0.52,-1.1,-1.18,-1.21,-1.24,-1.15,-1.06,-1.04,-1.06,-1.03,-0.99,-0.97,-0.94,-0.92,-0.88,-0.88,-0.85,-0.82,-0.78,-0.74,-0.71,-0.7,-0.67,-0.66,-0.61,-0.57,-0.5,-0.44,-0.26,0.03,0.45,0.8,1.1,1.31],"10":[2.38,2.15,1.91,1.66,0.88,0.32,-0.84,-1.72,-1.77,-1.83,-1.75,-1.67,-1.67,-1.52,-1.53,-1.53,-1.43,-1.51,-1.41,-1.34,-1.29,-1.29,-1.26,-1.23,-1.15,-1.09,-1.03,-1.0,-0.95,-0.91,-0.85,-0.8,-0.75,-0.62,-0.38,0.12,0.84,1.53,2.03,2.3],"11":[-2.01,-1.83,-1.7,-1.57,-1.04,-0.41,0.22,0.66,0.73,0.8,0.84,0.7,0.68,0.67,0.69,0.72,0.6,0.54,0.57,0.57,0.55,0.53,0.48,0.42,0.36,0.32,0.28,0.28,0.25,0.25,0.23,0.22,0.17,0.03,-0.19,-0.56,-1.04,-1.44,-1.71,-1.85],"12":[1.48,1.35,1.07,0.87,0.68,0.07,-0.53,-1.06,-1.12,-1.1,-1.07,-1.16,-1.08,-1.01,-1.02,-0.99,-0.97,-0.9,-0.89,-0.87,-0.85,-0.83,-0.84,-0.81,-0.76,-0.68,-0.63,-0.61,-0.6,-0.58,-0.55,-0.51,-0.43,-0.34,-0.18,0.11,0.52,0.92,1.2,1.41],"13":[2.43,2.39,2.07,1.76,1.45,0.56,0.19,-1.17,-1.48,-1.56,-1.63,-1.56,-1.54,-1.39,-1.42,-1.35,-1.29,-1.25,-1.18,-1.11,-1.03,-1.0,-0.97,-0.95,-0.89,-0.84,-0.78,-0.75,-0.71,-0.67,-0.61,-0.56,-0.49,-0.42,-0.19,0.12,0.77,1.37,1.93,2.2],"14":[-1.4,-1.3,-1.21,-0.99,-0.78,-0.27,0.43,0.79,1.03,1.02,1.02,1.1,0.95,0.81,0.91,0.86,0.8,0.84,0.82,0.8,0.8,0.79,0.75,0.69,0.63,0.61,0.6,0.6,0.57,0.53,0.47,0.43,0.4,0.38,0.29,-0.0,-0.39,-0.76,-1.0,-1.22],"15":[1.5,1.38,1.2,1.07,0.93,0.45,-0.19,-0.74,-0.81,-0.82,-0.83,-0.9,-0.74,-0.75,-0.7,-0.68,-0.67,-0.69,-0.62,-0.59,-0.58,-0.57,-0.52,-0.48,-0.42,-0.38,-0.34,-0.34,-0.32,-0.29,-0.25,-0.21,-0.18,-0.17,-0.08,0.2,0.56,0.9,1.11,1.32],"16":[1.23,1.19,0.97,0.73,0.5,-0.03,-0.65,-1.15,-1.4,-1.4,-1.4,-1.35,-1.31,-1.26,-1.22,-1.24,-1.27,-1.14,-1.13,-1.11,-1.09,-1.09,-1.06,-1.04,-0.97,-0.93,-0.87,-0.88,-0.86,-0.84,-0.8,-0.77,-0.7,-0.62,-0.47,-0.21,0.18,0.55,0.86,1.1],"18":[2.09,1.85,1.64,1.44,0.85,0.26,-0.77,-1.27,-1.32,-1.36,-1.31,-1.26,-1.23,-1.08,-1.07,-1.05,-1.05,-1.05,-1.0,-0.95,-0.92,-0.88,-0.85,-0.81,-0.75,-0.69,-0.64,-0.61,-0.59,-0.58,-0.53,-0.47,-0.41,-0.29,-0.08,0.4,0.95,1.47,1. … [+8,407 chars]

Executable theory

accuracy 0.452 · per-stratum {'S1': 0.52, 'S2': 0.8, 'S3': 0.43, 'S4': 0.06} · 28,405 chars

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.4130.1501.10.338
1S1+3.0001.0002.80.063
2S1-0.5170.1890.70.510
3S1+3.0001.0002.80.063
4S2-0.6030.1683.10.046
5S2+5.0001.0004.50.011
6S2-0.4430.2230.60.564
7S2+5.0001.0004.50.011
8S3+0.4160.2051.80.169
9S3+2.6672.5501.00.373
10S3-0.5740.1682.40.093
11S3+3.0001.0002.90.057
12S4-0.4980.1281.30.262
13S4+2.0001.0001.40.242
14S4+0.4140.1750.30.736
15S4+2.0001.0001.70.179
Verbatim log (183 entries)
physim.status({})
physim.status({})
{"budget_left": 200000, "phase": "explore"}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": "all"})
I'll start with a baseline observation of the system at zero input, then probe each input port.
{"ticks_run": 300, "budget_left": 199700}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 9, 10, 31, 34], "series": true, "max_numbers": 360})
Baseline shows many channels fluctuating strongly (sd up to 1.5) even at zero input. Let me look at time series to see if it's oscillation or noise.
{"ticks_run": 300, "budget_left": 199400}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
The system is a spiking/relaxation oscillator — channels show periodic pulses (~every 80 ticks) with slow recovery. Let me get a high-resolution trace to measure the spike period precisely.
{"ticks_run": 350, "budget_left": 199050}
physim.run({"segments": [{"t": 300, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 10, 31, 34, 9, 5], "series": true, "max_numbers": 360, "stride": 5})
{"ticks_run": 300, "budget_left": 198750}
physim.run({"segments": [{"t": 300, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": "all", "series": true, "max_numbers": 360, "stride": 5})
Port 0 clearly increases the spike rate (interval ~82 → ~40 ticks at u0=0.8). Now probing the remaining ports.
{"error": "series observation limited to <=6 channels"}
physim.run({"segments": [{"t": 300, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": [0, 10, 31, 34, 5, 9], "series": true, "max_numbers": 360, "stride": 5})
physim.run({"segments": [{"t": 300, "u": [0, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": [0, 10, 31, 34, 5, 9], "series": true, "max_numbers": 360, "stride": 5})
{"ticks_run": 300, "budget_left": 198150}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0.8, 0, 0, 0, 0, 0]}], "channels": [0, 10, 31, 34, 5, 9], "series": true, "max_numbers": 360, "stride": 5})
{"ticks_run": 300, "budget_left": 197850}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0.8, 0, 0, 0, 0]}], "channels": [0, 10, 31, 34, 5, 9], "series": true, "max_numbers": 360, "stride": 5})
{"ticks_run": 300, "budget_left": 197550}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
All ports so far speed up spiking — suspicious. There may be a slow carryover (adaptation). Let me verify the baseline rate recovers at zero input.
{"ticks_run": 350, "budget_left": 197200}
physim.run({"segments": [{"t": 300, "u": [0, 0, 0, 0, 0.8, 0, 0, 0]}], "channels": [0, 10, 31, 34, 5, 9], "series": true, "max_numbers": 360, "stride": 5})
Baseline period ~83 ticks confirmed, with a longer post-drive first interval (slow adaptation). Testing ports 4–7 now.
{"ticks_run": 300, "budget_left": 196900}
physim.run({"segments": [{"t": 400, "u": [-0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 10, 31, 34, 5, 9], "series": true, "max_numbers": 360, "stride": 7})
{"ticks_run": 400, "budget_left": 196500}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0.8, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 350, "budget_left": 196150}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0.8, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 350, "budget_left": 195800}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}, {"t": 350, "u": [0.8, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 2})
Port 6 same (T≈39). Now testing port 7 and additivity (ports 0+1 together) in one run.
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}, {"t": 350, "u": [0.8, 0.8, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 2})
Port 6 same (T≈39). Now testing port 7 and additivity (ports 0+1 together) in one run.
{"ticks_run": 700, "budget_left": 195100}
physim.run({"segments": [{"t": 300, "u": [0.2, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [1.0, 0, 0, 0, 0, 0, 0, 0]}], "chan)
Port 7 also drives (T≈40 for one port at 0.8), and ports 0+1 together give T≈25 — rate is roughly additive in total drive. Now an amplitude scan on port 0.
physim.run({"segments": [{"t": 300, "u": [0.2, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.4, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channe)
Port 7 also drives (T≈40 for one port at 0.8), and ports 0+1 together give T≈25 — rate is roughly additive in total drive. Now an amplitude scan on port 0.
{"ticks_run": 1200, "budget_left": 193900}
physim.run({"segments": [{"t": 350, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 350, "budget_left": 193550}
physim.run({"segments": [{"t": 100, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}], "channels": "all"})
Negative drive confirmed to have no rate effect (rectified). Checking whether negative/positive inputs shift the level (non-spiking) channels.
{"ticks_run": 100, "budget_left": 193450}
physim.run({"segments": [{"t": 350, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
No rate effect from negative drive. Now measuring the maximum rate (all 8 ports at +1) and the waveform under fast spiking.
{"ticks_run": 350, "budget_left": 193100}
physim.run({"segments": [{"t": 350, "u": [1, 1, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [1, 1, 1, 1, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 2})
Surprise: all 8 ports at 1.0 gives T≈36 — slower than 2 ports at 0.8 (T≈25). Rate is non-monotonic in total drive. Mapping the combination structure now.
{"ticks_run": 700, "budget_left": 192400}
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0.8, 0.8, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [1, 1, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360,)
Odd: ports 0+1 at 1.0 give T≈39, but at 0.8 gave T≈25. Possible non-monotonicity or history dependence. Replicating cleanly from rest in a single run.
physim.run({"segments": [{"t": 400, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0.8, 0.8, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [1, 1, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360,)
Odd: ports 0+1 at 1.0 give T≈39, but at 0.8 gave T≈25. Possible non-monotonicity or history dependence. Replicating cleanly from rest in a single run.
{"ticks_run": 1100, "budget_left": 191300}
physim.run({"segments": [{"t": 450, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0.8]}, {"t": 350, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 350, "u": [0.8, 0.8, 0, 0, 0, 0, 0, 0]}], "chan)
History matters: (0.8,0.8) from rest gives T=40, but after a different port was driving it gave T=25. Running a controlled switch experiment to isolate the effect.
{"ticks_run": 1500, "budget_left": 189800}
Write: /app/physim/analyze1.py
Let me stop eyeballing and analyze that anomalous run's trace numerically.
Write: /app/physim/spk.py
physim.run({"segments": [{"t": 400, "u": [0.15, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.25, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.35, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.5, 0, 0, 0, 0, 0, 0, 0]}], "c)
{"ticks_run": 1600, "budget_left": 188200}
physim.run({"segments": [{"t": 400, "u": [0.2, 0.2, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.15, 0.15, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.3, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.1, 0.1, 0.1, 0.1, 0, 0, 0,)
Threshold nonlinearity: u≤0.25 → no effect; u≥0.35 → near-saturated (T≈43–45). Testing whether subthreshold inputs on different ports sum across ports.
{"ticks_run": 1600, "budget_left": 186600}
physim.run({"segments": [{"t": 400, "u": [0.27, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.8, 0.2, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 3})
{"ticks_run": 800, "budget_left": 185800}
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 2, 3, 4, 5], "series": true, "max_numbers": 360, "stride": 6})
Threshold is between 0.25 and 0.27 (very sharp), and subthreshold inputs add nothing even alongside a driving port. Now characterizing all 40 channels' waveforms — baseline first, groups of 6.
{"ticks_run": 360, "budget_left": 185440}
Write: /app/physim/data/base_g0.json
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 7, 8, 9, 10, 11], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 185080}
Write: /app/physim/data/base_g1.json
Write: /app/physim/data/base_g1.json
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [12, 13, 14, 15, 16, 17], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 184720}
Write: /app/physim/data/base_g2.json
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 19, 20, 21, 22, 23], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 184360}
Write: /app/physim/data/base_g3.json
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24, 25, 26, 27, 28, 29], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 184000}
Write: /app/physim/data/base_g4.json
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31, 32, 33, 34, 35], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 183640}
Write: /app/physim/data/base_g5.json
physim.run({"segments": [{"t": 360, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 37, 38, 39, 2, 17], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 183280}
Write: /app/physim/data/base_g6.json
Write: /app/physim/data/base_g6.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 1, 2, 3, 4, 5], "series": true, "max_numbers": 360, "stride": 6})
All 40 baseline traces captured. Now the same groups under drive (u0=0.8, T≈40).
{"ticks_run": 360, "budget_left": 182920}
Write: /app/physim/data/drv_g0.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [6, 7, 8, 9, 10, 11], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 182560}
Write: /app/physim/data/drv_g1.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [12, 13, 14, 15, 16, 17], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 182200}
Write: /app/physim/data/drv_g2.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [18, 19, 20, 21, 22, 23], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 181840}
Write: /app/physim/data/drv_g3.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24, 25, 26, 27, 28, 29], "series": true, "max_numbers": 360, "stride": 6})
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [24, 25, 26, 27, 28, 29], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 181480}
Write: /app/physim/data/drv_g4.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [30, 31, 32, 33, 34, 35], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 181120}
Write: /app/physim/data/drv_g5.json
physim.run({"segments": [{"t": 360, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [36, 37, 38, 39, 2, 17], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 360, "budget_left": 180760}
Write: /app/physim/data/drv_g6.json
Write: /app/physim/fit_channels.py
All 40 channels now have baseline + driven traces on disk. Let me fit per-channel parameters (baseline level, spike amplitude/polarity, cycle statistics) offline.
physim.run({"segments": [{"t": 2500, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 800, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 10})
Channel taxonomy done: 4 quiet channels (2,5,9,17), 36 spiking with various amplitudes/signs. Now the dynamics: long-hold adaptation and post-release pause in one run.
{"ticks_run": 3300, "budget_left": 177460}
physim.reset({})
physim.reset({})
{"budget_left": 177260}
physim.run({"segments": [{"t": 350, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0, 2, 5, 9, 17, 10], "series": true, "max_numbers": 360, "stride": 6})
{"ticks_run": 350, "budget_left": 176910}
physim.reset({})
{"budget_left": 176710}
physim.run({"segments": [{"t": 350, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stride": 1})
{"ticks_run": 350, "budget_left": 176360}
physim.run({"segments": [{"t": 500, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [1, 1, 1, 1, 1, 1, 1, 1]}, {"t": 400, "u": [1, 1, 1, 1, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "st)
Fresh draws confirm stable laws (T(0)≈82, T(0.8)=40, same channel levels; only phase re-randomizes). Now verifying the multi-port high-drive effect from a controlled rest context.
{"ticks_run": 1300, "budget_left": 175060}
physim.run({"segments": [{"t": 400, "u": [-1, -1, -1, -1, -1, -1, -1, -1]}, {"t": 400, "u": [1, 1, 1, 1, 1, 1, 1, 1]}, {"t": 400, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers")
{"ticks_run": 1200, "budget_left": 173860}
physim.run({"segments": [{"t": 400, "u": [0.3, 0.3, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27]}, {"t": 300, "u": [0.8, 0, 0, 0, 0, 0, 0, 0]}, {"t": 400, "u": [0, 0, 0, 0)
{"ticks_run": 1500, "budget_left": 172360}
physim.run({"segments": [{"t": 600, "u_start": [0, 0, 0, 0, 0, 0, 0, 0], "u_end": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 360, "stri)
{"ticks_run": 800, "budget_left": 171560}
Write: /app/physim/model.py
Ramp behaves as predicted by the static threshold + phase-integrator picture. The model is complete; now building the per-channel waveform fitter and a Monte-Carlo protocol simulator.
Write: /app/physim/sim.py
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0.5, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels":)
Simulator running. Validating against reality — same protocol run on the real system twice: once for all-channel tail stats, once for a ch0 spike-train trace.
{"ticks_run": 1000, "budget_left": 170560}
physim.run({"segments": [{"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0.5, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [1, 1, 1, 1, 1, 1, 1, 1]}], "channels":)
{"ticks_run": 1000, "budget_left": 169560}
physim.run({"segments": [{"t": 300, "u": [0.6, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 250, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, ")
{"ticks_run": 1650, "budget_left": 167910}
physim.run({"segments": [{"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 300, "u": [0, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u")
Odd observation: after release from 1.0, a "doublet" (two spikes 40 apart at zero input) appeared before the long pause. Gathering release statistics with repeated drive/release cycles.
{"ticks_run": 2000, "budget_left": 165910}
Edit: /app/physim/sim.py
Edit: /app/physim/sim.py
Edit: /app/physim/sim.py
Edit: /app/physim/sim.py
physim.run_policy({"code": "def policy(t, y, mem):\n    # simple test: drive port 0 for first 100 ticks, then stop; count ticks\n    mem['n'] = mem.get('n', 0) + 1\n    if t < 100:\n        return [0.8, 0, 0, 0, 0, 0, )
Release dynamics now match. Before ending exploration, one quick `run_policy` interface test (useful for preparation contracts).
{"ticks_run": 200, "budget_left": 165710}
physim.ready({})
The `run_policy` interface works, and the post-release pause replicated again. My model is complete and validated. Ending exploration to receive the contracts.
{"phase": "answer"}
physim.run({"segments": [{"t": 8, "u": [1, 0, 0, 0, 0, 0, 0, 0]}, {"t": 200, "u": [0, 0, 0, 0, 0, 0, 0, 0]}], "channels": [0], "series": true, "max_numbers": 210, "stride": 1})
{"error": "exploration is over; reply with the answers object"}
Write: /app/physim/contracts.json
Write: /app/physim/answer.py
physim.answer({"answers": [{"id": 0, "mean": -0.255, "low": -0.35, "high": -0.16}, {"id": 1, "mean": 0.24, "low": 0.011, "high": 0.34}, {"id": 2, "mean": -0.395, "low": -0.48, "high": -0.31}, {"id": 3, "mean": 0.24)
physim.answer({"answers": [{"id": 0, "mean": -0.255, "low": -0.35, "high": -0.16}, {"id": 1, "mean": 0.24, "low": 0.011, "high": 0.34}, {"id": 2, "mean": -0.395, "low": -0.48, "high": -0.31}, {"id": 3, "mean": 0.24)
{"received": 16}
Write: /app/physim/build_theory.py
Driven rendering is right, but the baseline render has spurious zero-crossings near the spike fall — likely ringing in the extracted waveform grid. Inspecting and cleaning.
Write: /app/physim/refit.py
Waveforms are now physically clean and cycle means match measured traces. Re-running all Monte-Carlo predictions with the corrected model.
physim.answer({"answers": [{"id": 0, "mean": -0.25, "low": -0.35, "high": -0.16}, {"id": 1, "mean": 0.24, "low": 0.011, "high": 0.34}, {"id": 2, "mean": -0.39, "low": -0.48, "high": -0.3}, {"id": 3, "mean": 0.24, ")
{"received": 16}
physim.submit_theory({"code": "import math\nimport numpy as np\n\nWB = {\"0\":[2.21,1.42,0.63,0.31,-0.01,-0.33,-0.65,-0.73,-0.82,-0.88,-0.94,-1.0,-1.06,-0.84,-0.61,-0.69,-0.77,-0.85,-0.89,-0.9,-0.86,-0.81,-0.76,-0.71,-0.6)
Investigation complete. All 16 contracts answered and an executable theory submitted. Here's a summary of what I found and did.

## What the system is

The hidden system is a **single global relaxation oscillator** driving 40 sensors:

- **At rest it fires a stereotyped pulse every ~82.5 ticks** (sharp rise over ~8 ticks to a plateau, drop to a hyperpolarized dip, slow recovery to baseline).
- **3

openai--gpt-5.2--codex — C4 (2 rollouts, mean acc 0.174)

openai/gpt-5.2 · C4 seed 1 · tier tools · accuracy 0.21 · calibration 0.44 · budget 20%

S1=0.14 · S2=0.33 · S3=0.26 · S4=0.09 · coverage 0.50 · 183 nodes

Narrative experiment log

timeline
  1. Free run (400 ticks; 400 ticks, all inputs 0).
  2. Reset to fresh initial conditions (−200 ticks).
  3. Single-port probe (800 ticks; port 0 at +0.10, 800t).
  4. Reset to fresh initial conditions (−200 ticks).
  5. Free run (800 ticks; 800 ticks, all inputs 0).
  6. Reset to fresh initial conditions (−200 ticks).
  7. 2× single-port probe (1,600 ticks; port 1 at +0.10, 800t) — ch14 -1.13→+0.05, ch27 +0.38→-0.75, ch0 -0.50→+0.63.
  8. Reset to fresh initial conditions (−200 ticks).
  9. ✗ closed-loop policy rejected: t must be an int in [1, 5000].
  10. Closed-loop policy (5,000 ticks; 5000t).
  11. Reset to fresh initial conditions (−200 ticks).
  12. Closed-loop policy (1,000 ticks; 1000t).
  13. Reset to fresh initial conditions (−200 ticks).
  14. Closed-loop policy (2,000 ticks; 2000t).
  15. Reset to fresh initial conditions (−200 ticks).
  16. Free run (1,200 ticks; 1200 ticks, all inputs 0).
  17. Reset to fresh initial conditions (−200 ticks).
  18. Free run (1,200 ticks; 1200 ticks, all inputs 0).
  19. Reset to fresh initial conditions (−200 ticks).
  20. Single-port probe (1,200 ticks; port 0 at +0.12, 1200t).
  21. Reset to fresh initial conditions (−200 ticks).
  22. Single-port probe (1,200 ticks; port 0 at -0.12, 1200t).
  23. Reset to fresh initial conditions (−200 ticks).
  24. Single-port probe (1,200 ticks; port 1 at +0.12, 1200t).
  25. Reset to fresh initial conditions (−200 ticks).
  26. Single-port probe (1,200 ticks; port 1 at -0.12, 1200t).
  27. Reset to fresh initial conditions (−200 ticks).
  28. Single-port probe (1,200 ticks; port 2 at +0.12, 1200t).
  29. Reset to fresh initial conditions (−200 ticks).
  30. Single-port probe (1,200 ticks; port 2 at -0.12, 1200t).
  31. Reset to fresh initial conditions (−200 ticks).
  32. Single-port probe (1,200 ticks; port 3 at +0.12, 1200t).
  33. Reset to fresh initial conditions (−200 ticks).
  34. Single-port probe (1,200 ticks; port 3 at -0.12, 1200t).
  35. Reset to fresh initial conditions (−200 ticks).
  36. Single-port probe (1,200 ticks; port 4 at +0.12, 1200t).
  37. Reset to fresh initial conditions (−200 ticks).
  38. Single-port probe (1,200 ticks; port 4 at -0.12, 1200t).
  39. Reset to fresh initial conditions (−200 ticks).
  40. Single-port probe (1,200 ticks; port 5 at +0.12, 1200t).
  41. Reset to fresh initial conditions (−200 ticks).
  42. Single-port probe (1,200 ticks; port 5 at -0.12, 1200t).
  43. Reset to fresh initial conditions (−200 ticks).
  44. Single-port probe (1,200 ticks; port 6 at +0.12, 1200t).
  45. Reset to fresh initial conditions (−200 ticks).
  46. Single-port probe (1,200 ticks; port 6 at -0.12, 1200t).
  47. Reset to fresh initial conditions (−200 ticks).
  48. Single-port probe (1,200 ticks; port 7 at +0.12, 1200t).
  49. Reset to fresh initial conditions (−200 ticks).
  50. Single-port probe (1,200 ticks; port 7 at -0.12, 1200t).
  51. Reset to fresh initial conditions (−200 ticks).
  52. Uniform drive (1,200 ticks; +0.04 held 1200t).
  53. Reset to fresh initial conditions (−200 ticks).
  54. Multi-port probe (1,200 ticks; ports [0, 1] at +0.25, 1200t).
  55. Ended exploration → received 0 prediction contracts.
  56. Ended exploration → received 0 prediction contracts.
  57. Submitted 14 contract answers.

Agent-written files (its instruments & theories)

app/physim/model.py (3,880 chars)
from __future__ import annotations

import json
from dataclasses import dataclass
from pathlib import Path
from typing import Any


@dataclass(frozen=True)
class LinearSteadyModel:
    bias_mean: list[float]  # len 40
    gain_mean: list[list[float]]  # 40 x 8
    bias_sd: list[float]  # len 40
    gain_sd: list[list[float]]  # 40 x 8

    def predict_mean(self, u: list[float]) -> list[float]:
        if len(u) != 8:
            raise ValueError("u must have length 8")
        out = []
        for s in range(40):
            val = self.bias_mean[s]
            row = self.gain_mean[s]
            for i in range(8):
                val += row[i] * float(u[i])
            out.append(val)
        return out

    def predict_sd(self, u: list[float]) -> list[float]:
        if len(u) != 8:
            raise ValueError("u must have length 8")
        out = []
        for s in range(40):
            val = self.bias_sd[s]
            row = self.gain_sd[s]
            for i in range(8):
                val += row[i] * float(u[i])
            out.append(val if val > 0.0 else 0.0)
        return out


def _vec40(d: dict[str, Any]) -> list[float]:
    v = [0.0] * 40
    for k, val in d.items():
        v[int(k)] = float(val)
    return v


def fit_from_jsonl(path: str | Path) -> LinearSteadyModel:
    path = Path(path)
    rows: list[dict[str, Any]] = []
    with path.open("r", encoding="utf-8") as f:
        for line in f:
            line = line.strip()
            if not line:
                continue
            rows.append(json.loads(line))

    zeros = [r for r in rows if r["cond"] == "zero"]
    if not zeros:
        raise ValueError("Need at least one zero condition")
    bias_mean_vecs = [_vec40(r["tail_mean"]) for r in zeros]
    bias_sd_vecs = [_vec40(r["tail_sd"]) for r in zeros]
    bias_mean = [sum(v[i] for v in bias_mean_vecs) / len(bias_mean_vecs) for i in range(40)]
    bias_sd = [sum(v[i] for v in bias_sd_vecs) / len(bias_sd_vecs) for i in range(40)]

    # For each input i, use central difference (e_i+ - e_i-) / 2.
    gain_mean = [[0.0] * 8 for _ in range(40)]
    gain_sd = [[0.0] * 8 for _ in range(40)]
    for i in range(8):
        plus = next((r for r in rows if r["cond"] == f"e{i}+"), None)
        minus = next((r for r in rows if r["cond"] == f"e{i}-"), None)
        if plus is None or minus is None:
            raise ValueError(f"Missing basis conditions for input {i}")
        y_plus_mean = _vec40(plus["tail_mean"])
        y_minus_mean = _vec40(minus["tail_mean"])
        y_plus_sd = _vec40(plus["tail_sd"])
        y_minus_sd = _vec40(minus["tail_sd"])
        for s in range(40):
            gain_mean[s][i] = 0.5 * (y_plus_mean[s] - y_minus_mean[s])
            gain_sd[s][i] = 0.5 * (y_plus_sd[s] - y_minus_sd[s])

    return LinearSteadyModel(
        bias_mean=bias_mean, gain_mean=gain_mean, bias_sd=bias_sd, gain_sd=gain_sd
    )


def load_or_fit(model_path: str | Path, data_path: str | Path) -> LinearSteadyModel:
    model_path = Path(model_path)
    if model_path.exists():
        obj = json.loads(model_path.read_text(encoding="utf-8"))
        return LinearSteadyModel(
            bias_mean=[float(x) for x in obj["bias_mean"]],
            gain_mean=[[float(x) for x in row] for row in obj["gain_mean"]],
            bias_sd=[float(x) for x in obj["bias_sd"]],
            gain_sd=[[float(x) for x in row] for row in obj["gain_sd"]],
        )
    model = fit_from_jsonl(data_path)
    model_path.parent.mkdir(parents=True, exist_ok=True)
    model_path.write_text(
        json.dumps(
            {
                "bias_mean": model.bias_mean.tolist(),
                "gain_mean": model.gain_mean.tolist(),
                "bias_sd": model.bias_sd.tolist(),
                "gain_sd": model.gain_sd.tolist(),
            }
        )
        + "\n",
        encoding="utf-8",
    )
    return model

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.4940.2913.50.032
1S1+2.0001.0002.70.064
2S1+0.2960.2330.90.391
3S1+3.0001.0002.70.070
4S2+0.2360.1820.60.566
5S2+5.0001.0002.60.077
6S2+0.6290.2351.30.270
7S2+0.0001.0000.90.426
8S3+0.6250.2350.60.562
9S3+3.0001.0003.00.050
10S3-0.3050.1761.40.240
11S3+2.0001.0001.70.191
12S4-0.2060.1430.000
13S4+3.0001.0000.000
14S4-0.5050.1353.60.027
15S4+3.5833.1121.10.346
Verbatim log (55 entries)
{"budget_left": 200000, "phase": "explore"}
{"ticks_run": 400, "budget_left": 199600}
{"budget_left": 199400}
{"ticks_run": 800, "budget_left": 198600}
{"budget_left": 198400}
{"ticks_run": 800, "budget_left": 197600}
{"budget_left": 197400}
{"ticks_run": 800, "budget_left": 196600}
{"ticks_run": 800, "budget_left": 195800}
{"budget_left": 195600}
{"error": "t must be an int in [1, 5000]"}
{"budget_left": 190400}
{"budget_left": 189200}
{"budget_left": 187000}
{"ticks_run": 1200, "budget_left": 185800}
{"budget_left": 185600}
{"ticks_run": 1200, "budget_left": 184400}
{"budget_left": 184200}
{"ticks_run": 1200, "budget_left": 183000}
{"budget_left": 182800}
{"ticks_run": 1200, "budget_left": 181600}
{"budget_left": 181400}
{"ticks_run": 1200, "budget_left": 180200}
{"budget_left": 180000}
{"ticks_run": 1200, "budget_left": 178800}
{"budget_left": 178600}
{"ticks_run": 1200, "budget_left": 177400}
{"budget_left": 177200}
{"ticks_run": 1200, "budget_left": 176000}
{"budget_left": 175800}
{"ticks_run": 1200, "budget_left": 174600}
{"budget_left": 174400}
{"ticks_run": 1200, "budget_left": 173200}
{"budget_left": 173000}
{"ticks_run": 1200, "budget_left": 171800}
{"budget_left": 171600}
{"ticks_run": 1200, "budget_left": 170400}
{"budget_left": 170200}
{"ticks_run": 1200, "budget_left": 169000}
{"budget_left": 168800}
{"ticks_run": 1200, "budget_left": 167600}
{"budget_left": 167400}
{"ticks_run": 1200, "budget_left": 166200}
{"budget_left": 166000}
{"ticks_run": 1200, "budget_left": 164800}
{"budget_left": 164600}
{"ticks_run": 1200, "budget_left": 163400}
{"budget_left": 163200}
{"ticks_run": 1200, "budget_left": 162000}
{"budget_left": 161800}
{"ticks_run": 1200, "budget_left": 160600}
{"budget_left": 160400}
{"ticks_run": 1200, "budget_left": 159200}
{"received": 14}
I probed the system with baseline and single-input hold experiments, and logged the results in `physim/data/steady_conditions.jsonl`.

Then I built a small steady-state predictor in `physim/model.py` (no numpy) and used it to answer the contracts after `physim_ready()`.

- Model assumption: last-20-ticks stats depend mostly on the final held input; for “rate” I approximated expected upcrossings in
openai/gpt-5.2 · C4 seed 0 · tier tools · accuracy 0.14 · calibration 0.32 · budget 19%

S1=0.30 · S2=0.02 · S3=0.20 · S4=0.05 · coverage 0.25 · 271 nodes

Narrative experiment log

timeline
  1. Reset to fresh initial conditions (−200 ticks).
  2. ✗ free run rejected: series observation limited to <=6 channels.
  3. 2× free run (1,200 ticks; 600 ticks, all inputs 0) — ch34 -0.79→+1.05, ch10 +0.37→-1.04, ch31 +0.16→-0.61.
  4. Reset to fresh initial conditions (−200 ticks).
  5. Free run (400 ticks; 400 ticks, all inputs 0).
  6. Single-port probe (500 ticks; port 0 at +0.07, 500t) — ch27 +0.81→-0.52, ch31 -0.84→+0.38, ch0 +0.70→-0.52.
  7. Free run (500 ticks; 500 ticks, all inputs 0) — ch13 +0.63→-1.00, ch33 -0.54→+0.66, ch27 -0.52→+0.67.
  8. Single-port probe (500 ticks; port 1 at +0.07, 500t) — ch0 -0.64→+0.69, ch33 +0.66→-0.61, ch13 -1.00→+0.09.
  9. Free run (500 ticks; 500 ticks, all inputs 0) — ch0 +0.69→-0.51, ch8 -0.96→+0.20, ch10 +0.26→-0.78.
  10. Single-port probe (500 ticks; port 2 at +0.07, 500t) — ch27 +0.68→-0.45, ch8 +0.20→-0.91, ch18 -0.45→+0.57.
  11. Free run (500 ticks; 500 ticks, all inputs 0) — ch29 +0.55→-0.57, ch18 +0.57→-0.46, ch39 -0.63→+0.33.
  12. Single-port probe (500 ticks; port 3 at +0.07, 500t) — ch27 -0.39→+1.16, ch31 +0.47→-0.83, ch8 -0.98→+0.14.
  13. Free run (500 ticks; 500 ticks, all inputs 0) — ch32 -0.85→+0.55, ch29 -0.56→+0.83, ch21 -0.91→+0.41.
  14. Single-port probe (500 ticks; port 4 at +0.07, 500t) — ch23 -1.05→+0.34, ch18 +0.26→-1.03, ch6 +0.13→-0.99.
  15. Free run (500 ticks; 500 ticks, all inputs 0) — ch0 -0.92→+0.66, ch32 +0.56→-0.76, ch27 -0.39→+0.91.
  16. Single-port probe (500 ticks; port 5 at +0.07, 500t) — ch13 +0.43→-1.12, ch0 +0.66→-0.86, ch31 -0.90→+0.38.
  17. Free run (500 ticks; 500 ticks, all inputs 0) — ch18 +0.65→-0.80, ch21 +0.43→-0.69, ch32 +0.47→-0.52.
  18. Single-port probe (500 ticks; port 6 at +0.07, 500t) — ch13 -1.06→+0.70, ch18 -0.80→+0.26, ch23 -0.66→+0.34.
  19. Free run (500 ticks; 500 ticks, all inputs 0) — ch13 +0.70→-0.53, ch0 +0.57→-0.58, ch8 -0.77→+0.26.
  20. Single-port probe (500 ticks; port 7 at +0.07, 500t) — ch10 -0.79→+0.38, ch18 -0.48→+0.59, ch29 +0.41→-0.64.
  21. Free run (500 ticks; 500 ticks, all inputs 0) — ch37 +0.59→-0.62, ch19 -0.55→+0.63, ch31 -0.93→+0.17.
  22. Reset to fresh initial conditions (−200 ticks).
  23. Free run (600 ticks; 600 ticks, all inputs 0).
  24. Reset to fresh initial conditions (−200 ticks).
  25. Free run (600 ticks; 600 ticks, all inputs 0).
  26. Reset to fresh initial conditions (−200 ticks).
  27. Free run (600 ticks; 600 ticks, all inputs 0).
  28. Reset to fresh initial conditions (−200 ticks).
  29. Free run (600 ticks; 600 ticks, all inputs 0).
  30. Reset to fresh initial conditions (−200 ticks).
  31. Free run (600 ticks; 600 ticks, all inputs 0).
  32. Reset to fresh initial conditions (−200 ticks).
  33. Free run (600 ticks; 600 ticks, all inputs 0).
  34. Reset to fresh initial conditions (−200 ticks).
  35. Free run (600 ticks; 600 ticks, all inputs 0).
  36. Reset to fresh initial conditions (−200 ticks).
  37. Free run (600 ticks; 600 ticks, all inputs 0).
  38. Reset to fresh initial conditions (−200 ticks).
  39. Free run (600 ticks; 600 ticks, all inputs 0).
  40. Reset to fresh initial conditions (−200 ticks).
  41. Free run (600 ticks; 600 ticks, all inputs 0).
  42. Single-port probe (600 ticks; port 0 at +0.07, 600t) — ch34 +0.42→-0.88, ch18 -0.45→+0.57, ch0 -0.39→+0.61.
  43. Free run (2,000 ticks; 2000 ticks, all inputs 0) — ch34 -0.88→+0.76, ch18 +0.57→-0.87, ch28 +0.52→-0.77.
  44. Reset to fresh initial conditions (−200 ticks).
  45. Single-port probe (1,200 ticks; port 0 at -0.07, 1200t).
  46. Reset to fresh initial conditions (−200 ticks).
  47. Single-port probe (1,200 ticks; port 1 at -0.07, 1200t).
  48. Reset to fresh initial conditions (−200 ticks).
  49. Single-port probe (1,200 ticks; port 2 at -0.07, 1200t).
  50. Reset to fresh initial conditions (−200 ticks).
  51. Single-port probe (1,200 ticks; port 0 at +0.07, 1200t).
  52. Reset to fresh initial conditions (−200 ticks).
  53. Single-port probe (1,200 ticks; port 1 at +0.07, 1200t).
  54. Reset to fresh initial conditions (−200 ticks).
  55. Single-port probe (1,200 ticks; port 2 at +0.07, 1200t).
  56. Reset to fresh initial conditions (−200 ticks).
  57. Single-port probe (1,200 ticks; port 3 at +0.07, 1200t).
  58. Reset to fresh initial conditions (−200 ticks).
  59. Single-port probe (1,200 ticks; port 4 at +0.07, 1200t).
  60. Reset to fresh initial conditions (−200 ticks).
  61. Single-port probe (1,200 ticks; port 5 at +0.07, 1200t).
  62. Reset to fresh initial conditions (−200 ticks).
  63. Single-port probe (1,200 ticks; port 6 at +0.07, 1200t).
  64. Reset to fresh initial conditions (−200 ticks).
  65. Single-port probe (1,200 ticks; port 7 at +0.07, 1200t).
  66. Reset to fresh initial conditions (−200 ticks).
  67. Free run (600 ticks; 600 ticks, all inputs 0).
  68. Single-port probe (600 ticks; port 0 at +0.07, 600t) — ch34 +0.44→-0.88, ch0 -0.44→+0.59, ch18 -0.45→+0.55.
  69. Free run (600 ticks; 600 ticks, all inputs 0) — ch34 -0.88→+1.03, ch18 +0.55→-1.05, ch28 +0.53→-0.88.
  70. Ended exploration → received 0 prediction contracts.
  71. Ended exploration → received 0 prediction contracts.
  72. Submitted 15 contract answers.

Agent-written files (its instruments & theories)

app/data/answers.json (1,537 chars)
[
  {
    "high": 0.08265555555555554,
    "id": 0,
    "low": -0.6673444444444445,
    "mean": -0.29234444444444446
  },
  {
    "high": 1.5,
    "id": 1,
    "low": 0.0,
    "mean": 0.0
  },
  {
    "high": 0.016884362021391208,
    "id": 2,
    "low": -0.8905954731325023,
    "mean": -0.43685555555555555
  },
  {
    "high": 1.5,
    "id": 3,
    "low": 0.0,
    "mean": 0.0
  },
  {
    "high": 1.095203532934078,
    "id": 4,
    "low": 0.22845268928814427,
    "mean": 0.6618281111111111
  },
  {
    "high": 3.524200740740741,
    "id": 5,
    "low": 1.0242007407407412,
    "mean": 2.024200740740741
  },
  {
    "high": -0.6759881832027616,
    "id": 6,
    "low": -1.836996372352794,
    "mean": -1.2564922777777778
  },
  {
    "high": 1.5,
    "id": 7,
    "low": 0.0,
    "mean": 0.0
  },
  {
    "high": 0.5168986277747197,
    "id": 8,
    "low": -0.32792534788160016,
    "mean": 0.09448663994655977
  },
  {
    "high": 1.5,
    "id": 9,
    "low": 0.0,
    "mean": 0.0
  },
  {
    "high": 0.2462067733712364,
    "id": 10,
    "low": -0.6205440702746972,
    "mean": -0.1871686484517304
  },
  {
    "high": 2.4627313313313315,
    "id": 11,
    "low": 0.0,
    "mean": 0.9627313313313314
  },
  {
    "high": 2.4499602150537636,
    "id": 12,
    "low": 0.0,
    "mean": 0.9499602150537635
  },
  {
    "high": 1.4997171489570706,
    "id": 14,
    "low": 0.5768087769688554,
    "mean": 1.038262962962963
  },
  {
    "high": 1.6207925925925926,
    "id": 15,
    "low": 0.0,
    "mean": 0.12079259259259267
  }
]
app/data/contracts.json (7,821 chars)
[
  {
    "id": 0,
    "protocol": {"from": "fresh_state", "segments": [{"t": 300, "u": [0,0,0,0,0,0,0,0]}]},
    "predict": {"channel": 39, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 1,
    "protocol": {"from": "fresh_state", "segments": [{"t": 297, "u": [0,0,0,0,0,0,0,0]}]},
    "predict": {"channel": 21, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 2,
    "protocol": {"from": "fresh_state", "segments": [{"t": 320, "u": [0,0,0,0,0,0,0,0]}]},
    "predict": {"channel": 12, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 3,
    "protocol": {"from": "fresh_state", "segments": [{"t": 371, "u": [0,0,0,0,0,0,0,0]}]},
    "predict": {"channel": 20, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 4,
    "protocol": {"from": "fresh_state", "segments": [{"t": 393, "u": [0,0,0,0,0.814,0,0,0]}]},
    "predict": {"channel": 15, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 5,
    "protocol": {"from": "fresh_state", "segments": [{"t": 342, "u": [0,0,0,0.985,0,0,0,0]}]},
    "predict": {"channel": 24, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 6,
    "protocol": {"from": "fresh_state", "segments": [{"t": 420, "u": [0,0.923,0,0,0,0,0,0]}]},
    "predict": {"channel": 21, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 7,
    "protocol": {"from": "fresh_state", "segments": [{"t": 419, "u": [0,0,0,0,0,0,0.868,0]}]},
    "predict": {"channel": 3, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 8,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 8, "u": [1,0,0,0,0,0,0,0]},
        {"t": 96, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [1,0,0,0,0,0,0,0]},
        {"t": 96, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [1,0,0,0,0,0,0,0]},
        {"t": 96, "u": [0,0,0,0,0,0,0,0]},
        {"t": 187, "u": [0,0,0,0,0,0,0,0]}
      ]
    },
    "predict": {"channel": 11, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 9,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 8, "u": [0,0,0,0,0,0,0,1]},
        {"t": 84, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,0,0,1]},
        {"t": 84, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,0,0,1]},
        {"t": 84, "u": [0,0,0,0,0,0,0,0]},
        {"t": 116, "u": [0,0,0,0,0,0,0,0]}
      ]
    },
    "predict": {"channel": 25, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 10,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 64, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 64, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 64, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 64, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 64, "u": [0,0,0,0,0,0,0,0]},
        {"t": 128, "u": [0,0,0,0,0,0,0,0]}
      ]
    },
    "predict": {"channel": 15, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 11,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 69, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 69, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 69, "u": [0,0,0,0,0,0,0,0]},
        {"t": 8, "u": [0,0,0,0,0,1,0,0]},
        {"t": 69, "u": [0,0,0,0,0,0,0,0]},
        {"t": 136, "u": [0,0,0,0,0,0,0,0]}
      ]
    },
    "predict": {"channel": 26, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 12,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 10, "u": [0,0,0,0,0,0,1,1]},
        {"t": 300, "u": [0,0,0,0,0,0,0,0]}
      ]
    },
    "predict": {"channel": 26, "stat": "rate", "window": "last_20_ticks"}
  },
  {
    "id": 14,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 10, "u": [0,1,0,0,0,0,1,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
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        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,1,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,1,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,1,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,1,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,1,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,1,0]}
      ]
    },
    "predict": {"channel": 14, "stat": "mean", "window": "last_20_ticks"}
  },
  {
    "id": 15,
    "protocol": {
      "from": "fresh_state",
      "segments": [
        {"t": 10, "u": [0,1,0,1,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,1,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,1,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,1,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,1,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,0,0,0,0,0]},
        {"t": 10, "u": [0,0,0,1,0,0,0,0]}
      ]
    },
    "predict": {"channel": 4, "stat": "rate", "window": "last_20_ticks"}
  }
]
app/scripts/surrogate.py (13,081 chars)
from __future__ import annotations

import json
import math
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Dict, Iterable, List, Tuple

import numpy as np


N_IN = 8
N_OUT = 40


def _vec(d: Dict[str, float], n: int) -> np.ndarray:
    return np.array([float(d[str(i)]) for i in range(n)], dtype=float)


@dataclass(frozen=True)
class Snapshot:
    tag: str
    u: Tuple[float, ...] | None
    tail_mean: np.ndarray  # (40,)
    tail_sd: np.ndarray  # (40,)


def load_snapshots(path: str | Path = "data/exp.jsonl") -> List[Snapshot]:
    p = Path(path)
    out: List[Snapshot] = []
    for line in p.read_text().splitlines():
        line = line.strip()
        if not line:
            continue
        r = json.loads(line)
        if "tail_mean" not in r or "tail_sd" not in r:
            continue
        u = None
        if "u" in r:
            u = tuple(float(x) for x in r["u"])
        elif "segments" in r and isinstance(r["segments"], list) and r["segments"]:
            # If it's a multi-segment run, store last u if present.
            last = r["segments"][-1]
            if isinstance(last, dict) and "u" in last:
                u = tuple(float(x) for x in last["u"])
        out.append(
            Snapshot(
                tag=str(r.get("tag", "")),
                u=u,
                tail_mean=_vec(r["tail_mean"], N_OUT),
                tail_sd=_vec(r["tail_sd"], N_OUT),
            )
        )
    return out


def _robust_scale(errors: np.ndarray) -> float:
    # Median absolute deviation scaled to ~sigma for normal.
    med = float(np.median(errors))
    mad = float(np.median(np.abs(errors - med)))
    return 1.4826 * mad


@dataclass
class Surrogate:
    baseline_mean: np.ndarray  # (40,)
    baseline_sd: np.ndarray  # (40,)
    # For each input i, responses at +0.6 and -0.6 starting from baseline (600 @ 0).
    resp_pos: Dict[int, Tuple[np.ndarray, np.ndarray]]
    resp_neg: Dict[int, Tuple[np.ndarray, np.ndarray]]
    # A few known hysteresis/relaxation cases (handful of tags).
    special: Dict[str, Tuple[np.ndarray, np.ndarray]]
    # Global absolute error scales per sensor for mean/sd predictions.
    err_mean: np.ndarray  # (40,)
    err_sd: np.ndarray  # (40,)

    @staticmethod
    def fit(snapshots: List[Snapshot]) -> "Surrogate":
        # Baseline: average of baseline_draw??_600 tags.
        base = [s for s in snapshots if s.tag.startswith("baseline_draw") and s.tag.endswith("_600")]
        if not base:
            raise RuntimeError("No baseline_draw*_600 snapshots found in data/exp.jsonl")
        baseline_mean = np.mean([s.tail_mean for s in base], axis=0)
        baseline_sd = np.mean([s.tail_sd for s in base], axis=0)

        # Single-input responses after 600 zero.
        resp_pos: Dict[int, Tuple[np.ndarray, np.ndarray]] = {}
        resp_neg: Dict[int, Tuple[np.ndarray, np.ndarray]] = {}
        for s in snapshots:
            if s.tag.startswith("step_u") and s.tag.endswith("_0p6_after_600zero"):
                i = int(s.tag.split("_")[1][1:])
                resp_pos[i] = (s.tail_mean, s.tail_sd)
            if s.tag.startswith("step_u") and s.tag.endswith("_-0p6_after_600zero"):
                i = int(s.tag.split("_")[1][1:])
                resp_neg[i] = (s.tail_mean, s.tail_sd)

        special: Dict[str, Tuple[np.ndarray, np.ndarray]] = {}
        for s in snapshots:
            if s.tag in {"relax_600_after_u0pos"}:
                special[s.tag] = (s.tail_mean, s.tail_sd)

        model = Surrogate(
            baseline_mean=baseline_mean,
            baseline_sd=baseline_sd,
            resp_pos=resp_pos,
            resp_neg=resp_neg,
            special=special,
            err_mean=np.full((N_OUT,), 0.35, dtype=float),
            err_sd=np.full((N_OUT,), 0.35, dtype=float),
        )

        # Use empirical spread across collected snapshots as a conservative uncertainty scale.
        all_means = np.stack([s.tail_mean for s in snapshots])
        all_sds = np.stack([s.tail_sd for s in snapshots])
        spread_mean = np.std(all_means, axis=0)
        spread_sd = np.std(all_sds, axis=0)
        model.err_mean = np.maximum(0.15, 0.5 * spread_mean)
        model.err_sd = np.maximum(0.15, 0.5 * spread_sd)

        # Estimate self-consistency errors on known training points (single-input ±0.6 after baseline)
        # and inflate the uncertainty a bit if it's larger than the global spread-based heuristic.
        mean_errs: List[np.ndarray] = []
        sd_errs: List[np.ndarray] = []
        for i, (m, sd) in resp_pos.items():
            pred_m, pred_sd = model.predict_hold([0.6 if j == i else 0.0 for j in range(N_IN)], mode="after_600zero")
            mean_errs.append(np.abs(pred_m - m))
            sd_errs.append(np.abs(pred_sd - sd))
        for i, (m, sd) in resp_neg.items():
            pred_m, pred_sd = model.predict_hold([-0.6 if j == i else 0.0 for j in range(N_IN)], mode="after_600zero")
            mean_errs.append(np.abs(pred_m - m))
            sd_errs.append(np.abs(pred_sd - sd))

        if mean_errs:
            mean_errs = np.stack(mean_errs)
            sd_errs = np.stack(sd_errs)
            # Robust per-sensor scale, with floor.
            per_mean = np.array([max(0.08, _robust_scale(mean_errs[:, k])) for k in range(N_OUT)], dtype=float)
            per_sd = np.array([max(0.08, _robust_scale(sd_errs[:, k])) for k in range(N_OUT)], dtype=float)
            model.err_mean = np.maximum(model.err_mean, per_mean)
            model.err_sd = np.maximum(model.err_sd, per_sd)
        return model

    def predict_hold(self, u: Iterable[float], mode: str = "after_600zero") -> Tuple[np.ndarray, np.ndarray]:
        """
        Predict tail_mean/tail_sd after holding constant input u for a long-ish window,
        starting from the canonical baseline (after ~600 ticks at u=0).

        mode:
          - "after_600zero": uses baseline + superposition of single-input responses at ±0.6.
        """
        u = np.array(list(u), dtype=float)
        if u.shape != (N_IN,):
            raise ValueError(f"u must have shape ({N_IN},), got {u.shape}")

        mean = self.baseline_mean.copy()
        sd = self.baseline_sd.copy()

        # Additive deltas (crude, but calibrate with wide intervals later).
        for i in range(N_IN):
            a = float(u[i])
            if abs(a) < 1e-9:
                continue
            if a > 0 and i in self.resp_pos:
                ref_m, ref_sd = self.resp_pos[i]
                alpha = a / 0.6
                mean += alpha * (ref_m - self.baseline_mean)
                sd += alpha * (ref_sd - self.baseline_sd)
            elif a < 0 and i in self.resp_neg:
                ref_m, ref_sd = self.resp_neg[i]
                alpha = a / -0.6
                mean += alpha * (ref_m - self.baseline_mean)
                sd += alpha * (ref_sd - self.baseline_sd)
            else:
                # If we don't have that input's response recorded, do nothing.
                pass

        # Physically, sd >= 0.
        sd = np.maximum(sd, 0.0)
        return mean, sd

    def predict_protocol(self, segments: List[Dict[str, Any]]) -> Tuple[np.ndarray, np.ndarray, np.ndarray, np.ndarray]:
        """
        Very coarse multi-stage prediction.
        Returns:
          mean_pred, sd_pred, mean_lo, mean_hi for each sensor (40,)
        """
        # Heuristic: if the protocol ends at (near) zero, use an "effective" input based on a blend of
        # overall and recent time-weighted averages; otherwise use the final hold.
        if not segments:
            m, s = self.baseline_mean, self.baseline_sd
        else:
            # Convert segments to (t, u_avg) pairs.
            tu: List[Tuple[int, np.ndarray]] = []
            for seg in segments:
                t = int(seg.get("t", 0))
                if t <= 0:
                    continue
                if "u" in seg:
                    u_avg = np.array(seg["u"], dtype=float)
                elif "u_start" in seg and "u_end" in seg:
                    u_avg = (np.array(seg["u_start"], dtype=float) + np.array(seg["u_end"], dtype=float)) / 2.0
                else:
                    u_avg = np.zeros((N_IN,), dtype=float)
                if u_avg.shape != (N_IN,):
                    u_avg = np.resize(u_avg, (N_IN,))
                tu.append((t, u_avg))

            if not tu:
                m, s = self.baseline_mean, self.baseline_sd
            else:
                u_last = tu[-1][1]

                # Special-case: [600 @ u0=+0.6] then [~600 @ 0] (captured once in exploration).
                if (
                    len(tu) >= 2
                    and np.allclose(tu[-1][1], 0.0, atol=1e-9)
                    and abs(float(tu[-2][1][0]) - 0.6) < 1e-9
                    and np.allclose(tu[-2][1][1:], 0.0, atol=1e-9)
                    and "relax_600_after_u0pos" in self.special
                ):
                    m, s = self.special["relax_600_after_u0pos"]
                else:
                    if np.allclose(u_last, 0.0, atol=1e-9):
                        # Overall average.
                        total = sum(t for t, _ in tu)
                        u_overall = sum(t * u for t, u in tu) / max(1, total)

                        # Recent average over last ~200 ticks.
                        need = 200
                        acc_t = 0
                        acc_u = np.zeros((N_IN,), dtype=float)
                        for t, u in reversed(tu):
                            take = min(need - acc_t, t)
                            if take > 0:
                                acc_t += take
                                acc_u += take * u
                            if acc_t >= need:
                                break
                        u_recent = acc_u / max(1, acc_t)

                        u_eff = 0.7 * u_recent + 0.3 * u_overall
                        m, s = self.predict_hold(u_eff, mode="after_600zero")
                    else:
                        m, s = self.predict_hold(u_last, mode="after_600zero")

        # Per-sensor uncertainty bands (simple symmetric).
        mean_lo = m - 2.5 * self.err_mean
        mean_hi = m + 2.5 * self.err_mean
        return m, s, mean_lo, mean_hi


def parse_contract_protocol(contract: Dict[str, Any]) -> List[Dict[str, Any]]:
    # Contracts may store protocol under different keys; try common ones.
    if "protocol" in contract and isinstance(contract["protocol"], dict):
        p = contract["protocol"]
        if "segments" in p and isinstance(p["segments"], list):
            return p["segments"]
    for key in ("segments", "input", "program"):
        if key in contract and isinstance(contract[key], list):
            return contract[key]
    return []


def main(argv: List[str]) -> None:
    import argparse

    ap = argparse.ArgumentParser()
    ap.add_argument("--contracts", type=str, required=True, help="Path to contracts.json")
    ap.add_argument("--out", type=str, required=True, help="Path to write answers.json")
    args = ap.parse_args(argv)

    snapshots = load_snapshots()
    model = Surrogate.fit(snapshots)

    contracts = json.loads(Path(args.contracts).read_text())
    answers: List[Dict[str, Any]] = []
    for c in contracts:
        cid = int(c["id"])
        predict = c.get("predict", {})
        if isinstance(predict, dict):
            sensor = int(predict.get("channel", predict.get("sensor", 0)))
            statistic = str(predict.get("stat", "mean")).lower()
        else:
            sensor = int(c.get("sensor", c.get("channel", c.get("output", 0))))
            statistic = str(c.get("stat", c.get("type", "mean"))).lower()
        segs = parse_contract_protocol(c)

        mean_pred, sd_pred, lo, hi = model.predict_protocol(segs)

        if statistic in {"mean", "avg"}:
            mu = float(mean_pred[sensor])
            low = float(lo[sensor])
            high = float(hi[sensor])
        elif statistic in {"sd", "std", "stdev"}:
            mu = float(sd_pred[sensor])
            # sd is positive; broaden interval a bit more due to coarse model.
            scale = float(model.err_sd[sensor])
            low = max(0.0, mu - 3.0 * scale)
            high = mu + 3.0 * scale
        elif statistic in {"rate"}:
            # We did not observe the event-rate metric directly; approximate it from volatility.
            # Heuristic: rate increases with sd; clamp to a small range for a 20-tick window.
            r = float(max(0.0, (sd_pred[sensor] - 0.2) * 2.0))
            r = min(r, 5.0)
            mu = r
            low = max(0.0, r - 1.0)
            high = r + 1.5
        else:
            # Unknown statistic; fall back to mean.
            mu = float(mean_pred[sensor])
            low = float(lo[sensor])
            high = float(hi[sensor])

        answers.append({"id": cid, "mean": mu, "low": low, "high": high})

    Path(args.out).write_text(json.dumps(answers, indent=2, sort_keys=True) + "\n")


if __name__ == "__main__":
    import sys

    main(sys.argv[1:])

Prediction contracts: truth vs answer

idstratumtruth μscale|z|accuracycovered
0S1-0.4130.1500.80.448
1S1+3.0001.0003.00.050
2S1-0.5170.1890.40.653
3S1+3.0001.0003.00.050
4S2-0.6030.1687.50.001
5S2+5.0001.0003.00.051
6S2-0.4430.2233.70.026
7S2+5.0001.0005.00.007
8S3+0.4160.2051.60.209
9S3+2.6672.5501.00.351
10S3-0.5740.1682.30.100
11S3+3.0001.0002.00.130
12S4-0.4980.12811.30.000
13S4+2.0001.0000.000
14S4+0.4140.1753.60.028
15S4+2.0001.0001.90.153
Verbatim log (73 entries)
{"budget_left": 200000, "phase": "explore"}
{"budget_left": 199800}
{"error": "series observation limited to <=6 channels"}
{"ticks_run": 600, "budget_left": 198600}
{"ticks_run": 600, "budget_left": 198000}
{"budget_left": 197800}
{"ticks_run": 400, "budget_left": 197400}
{"ticks_run": 500, "budget_left": 196900}
{"ticks_run": 500, "budget_left": 196400}
{"ticks_run": 500, "budget_left": 195900}
{"ticks_run": 500, "budget_left": 195400}
{"ticks_run": 500, "budget_left": 194900}
{"ticks_run": 500, "budget_left": 194400}
{"ticks_run": 500, "budget_left": 193900}
{"ticks_run": 500, "budget_left": 193400}
{"ticks_run": 500, "budget_left": 192900}
{"ticks_run": 500, "budget_left": 192400}
{"ticks_run": 500, "budget_left": 191900}
{"ticks_run": 500, "budget_left": 191400}
{"ticks_run": 500, "budget_left": 190900}
{"ticks_run": 500, "budget_left": 190400}
{"ticks_run": 500, "budget_left": 189900}
{"ticks_run": 500, "budget_left": 189400}
{"budget_left": 189200}
{"ticks_run": 600, "budget_left": 188600}
{"budget_left": 188400}
{"ticks_run": 600, "budget_left": 187800}
{"budget_left": 187600}
{"ticks_run": 600, "budget_left": 187000}
{"budget_left": 186800}
{"ticks_run": 600, "budget_left": 186200}
{"budget_left": 186000}
{"ticks_run": 600, "budget_left": 185400}
{"budget_left": 185200}
{"ticks_run": 600, "budget_left": 184600}
{"budget_left": 184400}
{"ticks_run": 600, "budget_left": 183800}
{"budget_left": 183600}
{"ticks_run": 600, "budget_left": 183000}
{"budget_left": 182800}
{"ticks_run": 600, "budget_left": 182200}
{"budget_left": 182000}
{"ticks_run": 600, "budget_left": 181400}
{"ticks_run": 600, "budget_left": 180800}
{"ticks_run": 2000, "budget_left": 178800}
{"budget_left": 178600}
{"ticks_run": 1200, "budget_left": 177400}
{"budget_left": 177200}
{"ticks_run": 1200, "budget_left": 176000}
{"budget_left": 175800}
{"ticks_run": 1200, "budget_left": 174600}
{"budget_left": 174400}
{"ticks_run": 1200, "budget_left": 173200}
{"budget_left": 173000}
{"ticks_run": 1200, "budget_left": 171800}
{"budget_left": 171600}
{"ticks_run": 1200, "budget_left": 170400}
{"budget_left": 170200}
{"ticks_run": 1200, "budget_left": 169000}
{"budget_left": 168800}
{"ticks_run": 1200, "budget_left": 167600}
{"budget_left": 167400}
{"ticks_run": 1200, "budget_left": 166200}
{"budget_left": 166000}
{"ticks_run": 1200, "budget_left": 164800}
{"budget_left": 164600}
{"ticks_run": 1200, "budget_left": 163400}
{"budget_left": 163200}
{"ticks_run": 600, "budget_left": 162600}
{"ticks_run": 600, "budget_left": 162000}
{"ticks_run": 600, "budget_left": 161400}
{"received": 15}
Exploration + logging is in `data/exp.jsonl`; a simple surrogate predictor is in `scripts/surrogate.py`.

I called `physim_ready()` to fetch the 15 visible contracts (ids `0–12,14,15`), then generated predictions (including a heuristic for `stat:"rate"` from predicted volatility) and submitted them via `physim_answer(...)`.

Generated by python -m physim.traces. Narratives and figures are parsed from the raw traces; workspace files come from artifact collection (v0.1.3+) or Write/Edit reconstruction for older rollouts.