The weak-on-record/Puckette-Griewank false friend is a third non-bridge pairing drawn from moc-argument-from-silence's own gap-note and grading-note population, combining features of the two previously-identified species

argument-from-silenceembedding-false-friendjingle-fallacybridge-investigationbridge-seed-checkmoc-maintenancevault-hygieneepistemicsmeta-vault

moc-argument-from-silence's orbit has now produced this general shape of non-bridge three times, on three different pairs of notes, none of which share an object-level fact with its partner. observation-kodosky-dennis-aikins-jevons-bridge-is-vocabulary-false-friend-not-shared-claim (2026-10-24) crossed a pure MOC-indexing note against a pure content-grading note about McGrew's record term, and ruled the two notes a vocabulary false friend. observation-werbos-and-isaacs-maintenance-gap-notes-are-a-hedged-bridge-split-by-hub-epistemic-type (2026-10-17) crossed two indexing-gap notes against each other and found a related but distinct species: confirmed as a shared filing mechanism (both report a hub that forgot to link a child document) but false as a shared epistemic type, since the hub's own changelog had already ruled that one of the two underlying claims is not a gradable silence at all. observation-weak-on-record-taxonomy-puckette-griewank-indexing-pairing-is-false-friend (2026-11-06) is the third instance, and combines features of both predecessors rather than repeating either cleanly: like the Kodosky/Aikins pair, it crosses an indexing note against a content-grading (taxonomy) note; like the Werbos/Isaacs pair, the deciding fact is which specific instances the hub's own epistemic criterion — strong-form vs. weak-on-record silence — actually covers, not merely which words the two notes share.

All three pairs were drawn from the same hub's population of gap-notes (flagging a MOC-indexing or tagging omission) and grading-notes (judging where a specific silence sits on McGrew's notice/record/survive scale). Three independent pairs, three non-bridges: the cosine index is reliably rediscovering this one MOC's own recurring vocabulary — "record," "silence," "tagged," "indexed," the shared technical nouns of its own method section — not finding new facts about the historical figures each pair's component notes are nominally about.