theseus: extract from 2026-02-00-yamamoto-full-formal-arrow-impossibility.md

- Source: inbox/archive/2026-02-00-yamamoto-full-formal-arrow-impossibility.md
- Domain: ai-alignment
- Extracted by: headless extraction cron (worker 6)

Pentagon-Agent: Theseus <HEADLESS>

inbox/archive/2026-02-00-yamamoto-full-formal-arrow-impossibility.md

@@ -14,7 +14,7 @@ processed_by: theseus
 processed_date: 2026-03-11
 enrichments_applied: ["safe AI development requires building alignment mechanisms before scaling capability.md"]
 extraction_model: "anthropic/claude-sonnet-4.5"
-extraction_notes: "Pure formal verification work. No new claims warranted - this is foundational mathematical infrastructure that strengthens existing Arrow's theorem references in the KB. The timing (Feb 2026) is notable as it arrives just as AI alignment field grapples with Arrow's implications, but the paper itself is pure social choice theory with no AI connection. Enrichment adds formal verification status to our existing alignment impossibility arguments."
+extraction_notes: "Pure formal verification work with no direct AI alignment connection in the paper itself. Strengthens mathematical foundation for existing Arrow's impossibility claims by providing machine-checkable proof. No new claims warranted—this is infrastructure for existing arguments rather than novel insight."
 ---
 
 ## Content
@@ -39,5 +39,5 @@ EXTRACTION HINT: Likely enrichment to existing claim rather than standalone —
 
 ## Key Facts
 - Arrow's impossibility theorem received full formal representation using proof calculus (Yamamoto, PLOS One, February 2026)
-- Formal proof complements existing computer-aided proofs from AAAI 2008 and simplified proofs via Condorcet's paradox
-- Paper published in PLOS One (open-access, peer-reviewed) with no explicit connection to AI alignment applications
+- Formal proof complements AAAI 2008 computer-aided proofs and Condorcet's paradox simplifications
+- Proof reveals global structure of social welfare function central to the theorem