The cosine-0.87 bridge-seed pairing between claim-greenhalgh-2005-article-independently-cites-kwakernaak-1977 and claim-greenhalgh-2003-and-2005-1978-dating-footnotes-cite-identical-song-1986-essay-pages is a confirmed bridge, not a citation identity
Seek's semantic index flagged claim-greenhalgh-2005-article-independently-cites-kwakernaak-1977 and claim-greenhalgh-2003-and-2005-1978-dating-footnotes-cite-identical-song-1986-essay-pages as unlinked neighbors at cosine 0.87. A direct re-read of Susan Greenhalgh's 2005 China Quarterly article confirms a real bridge, but not the one the cosine score alone would suggest: the two notes do not describe the same citation. Footnote 17 (p. 258) sources Song Jian's dating of his European encounter to mid-1978 to Song's own 1986 conference essay, pp. 2–3 — a self-report. Footnote 43 (p. 266), eight pages later in the same "Song discovers Europe" narrative arc, sources the identity of the mathematical technique Song borrowed to two independent, externally verifiable Dutch papers: Huibert Kwakernaak 1977 and G.J. Olsder and R.C.W. Strijbos 1976. A reader cannot substitute one footnote's source for the other's.
The bridge sharpens rather than contradicts the target notes' existing "single document" finding. The footnote-43 sentence asserting Song discovered the Dutch work "in Europe" carries no citation of its own for that framing — only for what the work was — leaving the 1978 dating dependent entirely on footnote 17 and the same unread essay. Footnote 43's genuinely independent Dutch sources corroborate that Kwakernaak's and Olsder & Strijbos's work existed and was available to Song's group, but they say nothing about when Song's group encountered it. Two footnotes that look, from their titles alone, like they document "Song's European sources" resolve on direct reading into a division of labour: one leg dates the encounter, the other names what was found, and only the first carries a date. The vault's entire 1978 dating, across two separately-cited footnotes in one article, ultimately traces to one unread essay's pp. 2–3.
Source
“These were the historical currents prevailing in mid-1978 when, on a visit to Helsinki, Finland to attend the Seventh Triennial World Congress of the International Federation of Automatic Control, Song encountered a radically new (to China), cybernetic-based natural science of population and its control that was tied to the well-known work of the Club of Rome.17 [fn 17: Song Jian, 'Systems science and China's economic reforms' (1985), in Yang Jiachi (ed.), Control Science and Technology for Development (CSTD '85) (Oxford: Pergamon, 1986), pp. 2-3.]”
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