FA-12647 / Causal analysis data contracts / Member archive
An ATT request silently averages untreated potential outcomes · case 02
An ATT request silently averages untreated potential outcomes.
Case contract
Rows [treated,y0,y1] contain both synthetic potential outcomes. target is ATT or ATE; return the target average y1-y0, None for an empty target.
Why this case matters
A deterministic synthetic study model isolates this data-contract defect; outputs alone establish no real-world causal identification.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| ATT membership | 10.0 | 4 | Failed |
MEMBER ARCHIVE
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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