Both remaining third-instance candidates (Hawks-Jeffress, Liang-Olsder) structurally pre-qualify as Puckette-Petiška false friends, but no third cosine data point was obtained

embedding-false-friendjingle-fallacybridge-investigationmeta-vaultcosine-similarityretrievalmiller-puckette

The 2026-09-14 attempt to find a third instance of the Puckette-Petiška retrieval-magnet pattern confirmed only half of what it set out to test. question-verify-puckette-petiska-retrieval-magnet-third-instance asks two things at once: whether a third object-level "embedding false friend" note actually cosine-matches the Puckette-Petiška meta-note at ~0.87, and whether it resolves false friend by the same mechanism as the first two confirmed instances (Kelly-Luccioni, Falcon-Helmholtz). The mechanism half resolves; the quantitative half does not.

Direct textual comparison of the two named candidates — Hawks-Jeffress and Liang-1979/Olsder-1975 — against observation-puckette-dropped-mention-petiska-matthew-effect-pairing-is-embedding-false-friend finds both carrying the same three-part structural signature that resolved the first two instances: a recursion-level mismatch (each candidate is a first-order verdict over two raw claim-notes about the world, while Puckette-Petiška is this lineage's sixth meta-level hop, comparing two already-synthesized observation notes); grounding that runs in parallel rather than converging (both candidates cite claim-cosine-similarity-of-embeddings-can-be-arbitrary directly, whereas Puckette-Petiška's body cites only precedent observation notes, not that claim-note); and zero shared object-level content (2000s human-evolution and 1940s auditory neuroscience, or 1970s–80s China population policy, versus 2020s dataflow-programming lineage and LLM citation practice). Liang-Olsder carries one extra complication already documented in the lineage: it is one endpoint of a separately confirmed bridge with Gates-Jevons, but that label attaches to a different pairing at the same recursion level and does not transfer to the Liang-Olsder/Puckette-Petiška pairing tested here.

What the pre-check cannot supply is the cosine value itself. Both mcp__seek__vault_bridge and mcp__seek__vault_novelty returned a permission error on direct invocation this session, reproducing the gap logged 2026-08-22 in 00-meta/seek-flags.md and blocking every sibling session in this lineage that has needed it. No cosine match between either candidate and Puckette-Petiška was ever independently observed; the ~0.87 figure exists only in the question's framing, not in a measurement, so it stays [unverified-quant — needs primary]. The distinction is load-bearing: "the mechanism would resolve these as false friends if they were flagged" is not the same finding as "a third instance was flagged and resolved." Only the latter moves the retrieval-magnet hypothesis from two data points to three. This session leaves it at two, gated on tool access rather than on method.