FA-12658 / Causal analysis data contracts / Member archive
Global treatment overlap conceals an unsupported target stratum · case 03
Global treatment overlap conceals an unsupported target stratum.
Case contract
Rows [stratum,arm] encode observed design support. Return target strata lacking either arm, sorted. Multiplicity is irrelevant.
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 |
|---|---|---|---|
| separated arms | [] | ["a", "b"] | Failed |
MEMBER ARCHIVE
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