Derivation Web

claim_b828e05e0030427e

{"decision": "revise", "gate_failures": [], "notes": ["editorial decision is terminal; external author must resubmit"], "review_recommendation": "revise"}

source_dfa6af3a9e1f495a

# Source literature boundary memo

## Research question

Across retrieved source-level receipts for metformin_longevity, which endpoints show directionally favorable versus null/non-convergent signals, and what matched PICO remains untested?

## Selection criteria

The source-literature fallback selected metformin_longevity because the domain snapshot exposed enough source-backed, topic-overlappin…