Song Jian's self-report/Olsder-predates observation and Whyte, Wang & Cai's national-reliability claim connect only through Greenhalgh's 2003 article, not through a shared argument

chinapopulation-policyone-child-policyhistoriographycontested-causationcold-war-sciencegreenhalghsong-jianwhyte-wang-caiolsderliang-zhongtangcitation-genealogybridge-seedembedding-false-friendmeta-pairing

A bridge-seed check investigated a high-cosine (0.88), previously unlinked pairing between observation-song-jian-1978-self-report-predates-olsder-account and claim-whyte-wang-cai-2015-essay-reliable-on-national-dating-unreliable-on-yicheng-specific-date. Both notes cite Susan Greenhalgh's 2003 Population and Development Review article, but for two unrelated passages. The self-report note rests on p. 170, inside "The scientific revolution at Chengdu" — Song Jian's own account of a 1978 Europe trip (cited there to Song 1986). The national-reliability note rests on p. 185, inside "The policy impact of the control theorists" — "much evidence suggests that between mid-1978 and mid-1979, China's top leaders and population policymakers were moving toward adoption of a policy encouraging one-child families." A direct read of both sections found no cross-reference between them in either direction.

The two passages also rest on disjoint citation sets, so neither note's evidence could move the other even in principle. The mid-1978/mid-1979 claim is built from a chain of political-process citations — the Birth Planning Leading Group's June 1978 recommendation (Li 1980), Deng Xiaoping's March 1979 remarks (Deng 1984 [1979]), Chen Yun's late-spring-1979 proposal (Chen Muhua 1981), the June 1979 National People's Congress session (Government Work Report 1985 [1979]), and NPC deputies' calls for a one-child policy (Xinhua 1979) — that never touches Song's self-report. Song's 1978-Europe account (Song 1986: 2-3) belongs to a separate strand of the article, the scientization narrative culminating in the December 1979 Chengdu symposium, which Greenhalgh explicitly weighs against the political-process strand in the same section, arguing political leadership was already moving before the natural scientists' work reached it. The self-report note's publication-date sequencing (1986/2003 vs. 2008/2024) says nothing about whether the national chronology holds up, and the national-chronology note's corroboration says nothing about the Olsder/Song exposure-date dispute; both notes are complete and well-sourced without reference to each other.

This is at least a seventh instance, by this cluster's own drifting tallies, of the "shared landlord, not shared argument" shape already documented at observation-liang-2009-and-greenhalgh-2003-are-symmetric-shared-landlord, claim-liang-causal-credit-and-song-self-report-notes-connect-only-through-greenhalgh-2003, and observation-whyte-wang-cai-blind-spot-causal-credit-pairing-is-fourth-shared-landlord-instance — one 34-page article, quietly load-bearing for an unusual fraction of this corner of the vault, doing two different jobs on two different pages again.