EXPERIMENT 53 VERIFICATION
==========================
Compilation tested successfully.
Execution tested successfully.

Replay seed:
9783790101901

Scenarios: 30
Dataset modes per scenario: 2
Total executions: 60
Compile errors: 0
Runtime errors: 0

This is a diagnostic replay of the Experiment 51 holdout.
It adds no independent paired evidence.

Observed transition matrix:

COMPLETE_CABIN_TO_COMPLETE_CABIN
- scenarios: 20
- improved/worse/equal: 0/0/20
- aggregate delta: 0
- average depth: 0.00 -> 0.00

ENTRY_SATURATION_WITH_INTERNAL_CHAIN_TO_ENTRY_SATURATION_WITH_INTERNAL_CHAIN
- scenarios: 1
- improved/worse/equal: 0/0/1
- aggregate delta: 0
- average depth: 4.00 -> 4.00

LINKED_ROW_EVENT_CHAIN_TO_COMPLETE_CABIN
- scenarios: 1
- improved/worse/equal: 1/0/0
- aggregate delta: +10
- converted to complete: 1
- average depth: 9.00 -> 0.00

LINKED_ROW_EVENT_CHAIN_TO_LINKED_ROW_EVENT_CHAIN
- scenarios: 1
- improved/worse/equal: 0/0/1
- aggregate delta: 0
- average depth: 11.00 -> 11.00

MIXED_OR_UNCLASSIFIED_RESIDUAL_TO_MIXED_OR_UNCLASSIFIED_RESIDUAL
- scenarios: 1
- improved/worse/equal: 0/0/1
- aggregate delta: 0
- average depth: 2.00 -> 2.00

MOVING_PASSENGER_YIELD_CHAIN_TO_MOVING_PASSENGER_YIELD_CHAIN
- scenarios: 2
- improved/worse/equal: 0/0/2
- aggregate delta: 0
- average depth: 3.00 -> 3.00

REAR_BOUNDARY_LOCK_TO_COMPLETE_CABIN
- scenarios: 2
- improved/worse/equal: 2/0/0
- aggregate delta: +14
- converted to complete: 2
- average depth: 6.00 -> 0.00

REAR_BOUNDARY_LOCK_TO_REAR_BOUNDARY_LOCK
- scenarios: 2
- improved/worse/equal: 0/0/2
- aggregate delta: 0
- average depth: 2.50 -> 2.50

Aggregate transition findings:
- Changed topology: 3 scenarios, aggregate delta +24
- Unchanged topology: 27 scenarios, aggregate delta 0
- Conversions to COMPLETE_CABIN: 3

Interpretation:
All holdout gain is concentrated in the three topology-changing scenarios.
Every changed case converted a standard residual stall into COMPLETE_CABIN.
All 27 unchanged-topology cases were neutral.

Dependency depth collapsed to zero in every successful conversion.

This is post-run explanatory evidence, not a pre-movement predictor.

Official findings require the user's saved run.
