AWhat changed
Showed an incompatibility between unrestricted preference orderings over at least three alternatives and the stated social-ordering, positive-association, independence, non-imposition and non-dictatorship requirements.
Scientific scope
Showed an incompatibility between unrestricted preference orderings over at least three alternatives and the stated social-ordering, positive-association, independence, non-imposition and non-dictatorship requirements. Scope limitation: The record follows the 1950 conditions rather than silently substituting a later axiom system. It is a conditional impossibility theorem about aggregation rules, not a claim that every voting method is useless or that collective decisions are impossible.
Evidence
Assessment uses the catalogue-linked source evidence for the stated contribution. The record follows the 1950 conditions rather than silently substituting a later axiom system. It is a conditional impossibility theorem about aggregation rules, not a claim that every voting method is useless or that collective decisions are impossible.
Contributors
- Kenneth J. Arrow · SCIENCE: Named source contributor; exact labor shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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