badger comments on Strategyproof Mechanisms: Impossibilities - Less Wrong

15 Post author: badger 16 May 2014 12:52AM

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Comment author: badger 16 May 2014 04:09:24AM 4 points [-]

Arrow's theorem doesn't apply to rating systems like approval or range voting. However, Gibbard-Satterthwaite still holds. It holds more intensely if anything since agents have more ways to lie. Now you have to worry about someone saying their favorite is ten times better than their second favorite rather than just three times better in addition to lying about the order.