Derivation Web

source_6ddcb263ec714b7e

# Alpha memo — exercise

**Headline:** Exercise: single-source lead signal with broader context receipts
**Alpha triage:** `high` (internal ranking; not a certainty claim)
**Confidence:** `evidence_backed_signal`
**Memo surface:** `alpha memo`
**Snapshot:** `2026-05-16T18-12-38Z`
**Run:** `exercise-evidence-2026-05-16T18-12-38Z`
**Direct source breadth:** `1` direct cited source(s)
**Source thesis…