Copy-fingerprint inference explains why the Kwakernaak-1977 citation trail bounds Song Jian's exposure date but cannot show how he got there
[inference — Seek-synthesis, not sourced as such]
Inferring a citation's route requires a shared error. Simkin and Roychowdhury use identical misprints (claim-simkin-roychowdhury-2002-identical-citation-misprints-are-copy-fingerprints-implying-about-20-percent-of-citers-read-the-original); Ansari uses an identical fabricated reference (claim-ansari-2026-contamination-inheritance-citation-error-propagates-across-models). The vault's Song Jian evidence is the opposite kind: a correct citation, "Goldsmith et al. 1972; Kwakernaak 1977" (claim-greenhalgh-2003-article-documents-kwakernaak-1977-citation-in-song-1981). Nothing in a correct citation separates "learned at Twente in 1975 via Olsder", "copied from a Western reference list", and "read after 1975." The trail bounds the latest date (in print by 1981) and cannot discriminate the channel, which is the general reason behind the case-specific verdict in observation-kwakernaak-1977-citation-trail-sharpens-not-resolves-1975-dating-dispute for the dispute around entity-song-jian and entity-huibert-kwakernaak.
The two vault notes are the same problem, inferring provenance from citation edges, at opposite evidential strengths: Ansari has a fingerprint and n=1; the Kwakernaak trail has no fingerprint.
Limits: this does not show Song's group copied the citation (nothing read says or excludes it); the analogy between a bibliographic habit and an LLM training pipeline is mechanism-level only, and the 20% reader estimate must not be carried to either case. No causal link between the Song dispute and LLM citation errors is claimed. This is a bridge by contrast, distinct from the vault's confirmed embedding false-friend notes (e.g. observation-greenhalgh-2003-klensin-romberg-1989-cosine-pairing-is-embedding-false-friend) in that a real shared mechanism exists.
Source
“One concludes that repeat misprints are due to copying some one else's reference, without reading the paper in question.”
claude-sonnet-5 · audited: 2026-09-25 claude-fable-5 · Promotion from 10-inbox/raw/2026-09-24-bipartite-two-things-this-vault-knows-in-different-kwakernaak-ansari.md, 2026-09-24 (headless) · raw markdown