{ "experiment": "L5N20 null-tightening re-draw: the L5 Arm-B +/-3sigma matched-random-edit null re-drawn at honest N=20 (byte-verbatim L6/L5 rung machinery; M3 replay of L6's null95_20_mag3 first, then M4 fresh SEED_N20 draw). NOT a new claim -- replaces the N=3 null disclosure. GPT-2 124M.", "date": "2026-07-06", "propose_only": true, "pre_registration": "FINDINGS_PEN_CONSTRUCTIVE_2026-06-28.md :: 'L5N20 -- NULL-TIGHTENING RE-DRAW OF THE L5 +/-3sigma MATCHED-RANDOM NULL AT N=20 -- GAP + PRE-REGISTRATION (2026-07-06 ~19:03)'", "locked": { "tol_replay": 0.002, "tol_mag": 0.01, "tol_nullreplay": 5e-05, "n_null": 20, "n_discard": 20, "seed_oq4": 20260736, "seed_n20": 20260745, "banked": { "GB1_AON": -0.00388, "GB1_MAG3": 7.8544, "L6_NULL95_20_MAG3": 0.00289, "L5_NULL95_N3": 0.00993 }, "bands": "R=|A_on|/null95_20_new: BEATS R>1.1 / KNIFE-EDGE 0.9<=R<=1.1 / BELOW R<0.9 ; bet BEATS65/KNIFE20/BELOW15 ; verdicts untouched in every branch" }, "config": { "n_hold": 16, "mb": 4, "cap_chunk": 16, "cert_block": 512, "ind_seg": 64, "precision": "fp32", "tf32": "off", "attn": "eager", "seed": 1234, "smoke": false }, "gpu_free_checks": [ { "tag": "setup", "t": 41.2, "foreign": [], "waited_s": 0, "clear": true }, { "tag": "m3", "t": 44.0, "foreign": [], "waited_s": 0, "clear": true }, { "tag": "m4", "t": 57.7, "foreign": [], "waited_s": 0, "clear": true } ], "instrument_discrepancy": [], "gates": { "hashes": { "detail": { "encoder_v1": { "sha": "6be189567c41e91d", "locked": "6be189567c41e91d", "ok": true }, "encoder_json": { "sha": "365dc3ff592fc6bd", "locked": "365dc3ff592fc6bd", "ok": true }, "decoder_v7": { "sha": "b1d2f464c00c3ef6", "locked": "b1d2f464c00c3ef6", "ok": true }, "floors_recal": { "sha": "71549ae3afcc8d07", "locked": "71549ae3afcc8d07", "ok": true }, "lexicon_v3": { "sha": "71a51619a9bb25c3", "locked": "71a51619a9bb25c3", "ok": true }, "grammar": { "sha": "da6f8a63a061782b", "locked": "da6f8a63a061782b", "ok": true }, "l2babel_maps": { "sha": "b43f877af68728df", "locked": "b43f877af68728df", "ok": true }, "wellposedness": { "sha": "ea5236cbd608a385", "locked": "ea5236cbd608a385", "ok": true }, "offspan": { "sha": "77dd0948a63bb24f", "locked": "77dd0948a63bb24f", "ok": true } }, "pass": true }, "encoder_is_decoder_inverse": { "max_abs_diff": { "C": 0.0, "B2": 0.0, "Q35": 0.0, "Q_union": 0.0, "mu": 0.0, "read_W": 0.0 }, "pass": true }, "recal_ok": true, "identity_inject": { "detail": { "repetition": { "kl": 0.0, "dlogit": 0.0, "pass": true } }, "pass": true }, "gb1": { "A_on": -0.00387, "banked_A": -0.00388, "dev_A": 5e-06, "mag3": 7.8544, "banked_mag3": 7.8544, "dev_mag": 2e-05, "M_plus3": 0.94944, "M_minus3": 0.95719, "M_clean": 0.95686, "banked_M_clean": 0.9569, "pass": true } }, "m3_replay": { "null95_replay": 0.00289, "banked": 0.00289, "dev": 0.0, "n": 20, "nulls": [ 0.00073, 0.00259, 0.0, 0.00289, 0.00052, 0.0014, 0.00189, 0.0028, 0.00101, 0.00031, 0.00178, 0.01007, 0.00273, 0.00074, 0.00102, 0.00043, 0.00109, 0.00102, 0.00222, 5e-05 ], "pass": true }, "m4_fresh": { "null95_20_new": 0.00587, "n": 20, "seed": 20260745, "nulls": [ 0.00587, 0.00172, 0.00188, 0.00159, 0.00159, 0.00291, 0.00357, 0.003, 0.00063, 0.00254, 0.00219, 0.0038, 0.00049, 0.0002, 0.00043, 0.00332, 0.00245, 0.00077, 0.00255, 0.0061 ], "null_mean": 0.00238 }, "verdict": { "A_on": -0.00387, "abs_A_on": 0.00387, "null95_20_new": 0.00587, "ratio_R": 0.6593, "band": "BELOW", "replaced_disclosure": { "L5_null95_N3": 0.00993, "L6_rearm_null95_20": 0.00289 }, "binding_rule": "verdicts untouched in every branch: the rung stays steering-unusable (zero internal readouts cleared, sub-linear dose scaling); this run only replaces the N=3 null disclosure.", "smoke": false }, "status": "COMPLETE", "gpt2_meta": { "n_layer": 12, "d": 768, "precision": "fp32", "tf32": "off", "attn": "eager" }, "elapsed_s": 71.5 }