{
 "mechanisms": {
  "fertility_priors": {
   "date": "2026-09-25",
   "enabled": false,
   "gold": "helfi/HELFI",
   "lambda": 2.0,
   "note": "measured 2026-09-25 (roadmap M1), whole Bible vs its own HELFI gold, lambda=2: the intended NEGATIVE CONTROL and it behaved exactly as predicted -- fertility_priors.py flagged 0 anchors (fin has GB074=GB075=1, i.e. BOTH adposition directions attested -> ambiguous -> has_adp=False; GB020-023 all 0 -> has_art=False; GB089=1 -> subject_indexing present -> subj_incomplete=False; every relation gate closed). Result is a pure no-op: F1/exact_span identical to baseline within noise on both conditions (eflomal Delta-0.00065 vs floor 0.0011; +gloss Delta-0.0006 vs floor 0.0008; exact_span moved by -40 and -1.5, i.e. nothing). Confirms the relation-gating logic correctly does nothing when every gate is closed.",
   "source": "measured"
  }
 }
}