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HelenPeng
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ExeWorldBench

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initial → C1
C1 → C2
C2 → C3
C3 → C4
where:
* `initial → C1` evaluates the complete mechanical execution of C1.
* `A → B` jointly evaluates the mechanical interaction from A to B and the complete execution of B.
Do not evaluate A's own execution again in `A → B`.
Thus, each component execution and each transition are evaluated exactly once.
---
## A. MECHANISM EXECUTION
For the target component of each segment, check whether:
* it correctly and sufficiently completes its specified `action`;
* motion type, direction, range, magnitude, and resulting state are mechanically appropriate;
* its response is physically consistent with the incoming interaction;
* pivots, hinges, axes, and connected parts behave correctly;
* motion remains continuous without teleportation, detachment, abnormal deformation, or interpenetration;
* it genuinely performs its intended mechanical function rather than merely moving.
* Necessary passive auxiliary structures are allowed, but auxiliary structures that artificially reduce the difficulty of achieving the intended mechanical behavior should be penalized. For example, adding side walls to a ramp solely to prevent the ball from falling off simplifies the required mechanical construction.
Do not give a high score merely because a component visibly moves. Its motion must correctly perform its specified `action` and obey basic physical and mechanical principles.
### Domino Chain
A Domino Chain should exhibit genuine sequential propagation:
Incoming Object → First Domino → Second Domino → ... → Final Domino
The incoming object should primarily trigger the first domino, and each later domino should be triggered primarily by the preceding domino.
Lower the corresponding ECM segment score if multiple dominoes are directly triggered by the incoming object, fall independently or simultaneously, or otherwise fail to exhibit clear domino-by-domino propagation.
Do not judge correctness merely by whether all dominoes eventually fall.
---
## B. CAUSAL CONNECTIVITY
For each `A → B`, determine whether A successfully triggers B through a real, effective, and physically plausible mechanical interaction:
A produces mechanical output
→ the output physically reaches and acts on B
→ B responds because of that interaction.
Check whether:
* A produces an output capable of triggering B;
* the output physically reaches and acts on B;
* B responds after and because of A;
* positions, directions, distances, and motion ranges support the interaction;
* contact, collision, catching, release, connection, or mechanical transmission is physically plausible;
* there is no unexplained remote triggering, teleportation, interpenetration-based triggering, premature triggering, or implausible energy transfer.
Temporal order alone is not sufficient evidence of causality.
As an auxiliary causal test, ask:
**If A's mechanical action were removed, would B still execute in essentially the same way?**
If clearly yes, A may have been bypassed and the corresponding ECM segment score should be reduced.
---
## C. CAUSAL CHAIN BREAK RULE
The system must form one continuous chain:
initial → C1 → C2 → ... → CN
If the chain fails at a segment:
1. Score the failing segment according to the degree of successful interaction and target-component execution actually observed.
2. If the failure prevents continuous mechanical propagation from reaching downstream components, **all subsequent segments must receive 0**.
3. Later independent motion of downstream components cannot restore their scores.
For example, if C2 fails to successfully trigger C3:
* `initial → C1`: score normally
* `C1 → C2`: score normally
* `C2 → C3`: score according to observed partial success
* `C3 → C4` and all later segments: **0**
Only components reached through continuous mechanical propagation from `initial` are eligible for non-zero downstream segment scores.
---
## D. SEGMENT SCORING
For `initial → A`, evaluate A's complete execution.
For `A → B`, jointly evaluate: