C CULPRIT
forensic replay / incident 004 cause evidenced

Counterfactual investigation · Journey 0

One failure. Three evidenced verdicts.

The system descends from symptom to component, checkpoint, and training-data change. Confidence comes from what re-ran—not from what a model asserted.

run start · 0.0s
decisive frame 7 · 0.7s
01

Responsible component

perception.detector

100% confidence · 4 decisive replays · ruled out control.controller, planning.planner

02

Regressing transition

ckpt-3 → ckpt-4

2 binary-search evaluations · rollback true · 38 regression cases

03

Training-data change

DATA_COMPOSITION

depleted low-light training share matches the regression-set slice

Counterfactual replay

ground-truth substitution
SubstitutionSuccessesFlip signalOutcome flips
perception.detector10/10
100%
control.controller0/10
0%
planning.planner0/10
0%
Scope boundary · This report is generated from a synthetic deterministic fixture. Raw MCAP, Who&When, public checkpoint, and tier-3 TDA claims are not made. See LIMITS.md.