R12 Wide Result-Digit Motor Result

Protocol: R12-RDM-DEV-v1-disclosed-patch

Decision: REJECT_WIDE_RESULT_DIGIT_MOTOR_AS_AUTONOMOUS_ACTUATOR

Claim boundary: This is an exploratory development-board rejection. It is not a broad reasoning result and does not authorize a hardened confirmation evaluation, architecture promotion, or further result-digit-only scaling.

Custody

The interpretation contract was frozen and pushed in commit b2f5acb before job 692235 printed any teacher-forced, autonomous, or cycle score. The job completed on evc37 in 02:00:54 with Slurm state COMPLETED and exit 0:0.

The report is mirrored locally at artifacts/r12/result_digit_motor_r2_eval/eval.json, size 279,192 bytes, mode 0444, with the same hash as Newton. The disclosed motor-source manifest is dd94a00be3984d2f43d6342459ba9749e3164624bb9b96977bd19c11f23845f0. The report records evaluator-source manifest 6775d73f1d2dd0ea1260a1a82a6fa1af3aced143df5165aac0378eb7c9496cb6 and explicit noncanonical patch authorization. The exact evaluator, test, and spooled batch hashes remain bound in the pre-outcome contract.

Locked gate result

Rates pool all five 50-episode regimes by summing numerators and denominators. Percentage-point margins are absolute.

Mechanical and routing gates pass. The dead motor is behaviorally identical to base on every pooled and per-regime count, treatment and shuffled fire exactly once at each reported grammar site, non-DWS prompts have zero sites/fires and decoded identity, and all bound input hashes match. Passing these checks does not override the four failed capability gates.

The training-board result was 100% treatment digit top-1 versus 94.2375% base and 61.65% shuffled. Its collapse to 91.3571% on the held-out feature board shows that the 19,185,674-parameter motor fit a strong digit readout without learning a robust new transition rule. The small closed-loop change is not a hidden first-step gain: first-transition exactness is identical to base.

Direct transcript diagnosis

The retained autonomous transcripts contain the same first 15 episode IDs for base and treatment. Across their aligned rows, treatment changes zero decoded responses, rescues zero rows, and harms zero rows. Every one of the seven incorrect retained states differs from the target only in c; digit and all other fields are already correct.

The frozen-cycle transcript for fit_w4-00062 is the cleanest intervention example. The expected next state is:

dws:op=sub;w=4;p=3;c=1;a=5552;b=7452;r=8090;z=0

Base emits r=8000;c=0. Treatment changes the result register to the correct r=8090 but still emits c=0, so the complete state remains wrong. This is exactly the predicted separation: the fitted motor can serialize a residual digit, but it neither computes nor commits the carry/borrow state required for composition.

A separate direct local interaction on 50 held-out first transitions reached 50/50 result digits but only 39/50 exact complete states for both base and treatment. All 11 failures were carry/borrow errors, with zero treatment rescues or harms. The autonomous report independently confirms that diagnosis at larger scale.

Consequence

Close the wide result-digit-only branch. Do not increase motor width or run the mandatory hardened confirmation evaluator: the frozen advancement contract failed before confirmation eligibility. The actionable target is a coupled digit-plus-carry state transition with private pre-emission state commit, host-ALU-free autonomous rollout, and an exactly matched ordinary recurrent control. A digit actuator may remain a diagnostic component, but it is not the missing reasoning mechanism.