[EM] Arrow/Gibbard and impossibility (Re: Scientific American and the "Perfect Electoral System")

Kristofer Munsterhjelm km_elmet at t-online.de
Tue Nov 14 10:23:44 PST 2023


On 2023-11-14 19:19, Kristofer Munsterhjelm wrote:

> If we want to look at IIA in such a wide context, we'd have to consider 
> not just the voting method, but the surrounding dynamics as well. But at 
> least the good Condorcet methods should have relatively good strategic 
> entry and exit resistance, going by JGA's simulations.

I don't suppose my "hidden CW" and "hidden cycle" examples are really 
IIA failures because the candidates removed aren't irrelevant. But if 
the hidden candidates would form a cycle with the current top candidate, 
then they would be... like you (Toby) said.

-km


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