Re: [EM] Condorcet How? JL

2010-04-15 Thread Kevin Venzke
Hi Juho, I don't have much to add except on one point. --- En date de : Mer 14.4.10, Juho a écrit : > >> I think I did. For example sincere 49: A>B, 49: > C>D, > >> 1: D>B could be one such example. WV elects D, > and that > >> could be considered less than perfect performance > with > >> sincer

[EM] How to get closer to the impossible ideal of the IIAC

2010-04-15 Thread fsimmons
If we had a method that chose the winner on the basis of all possible candidates, rather than just the actual candidates, then the method would satisfy the IIAC, because any loser that was removed would automatically be replaced with a virtual candidate at the same position in issue space. Eight o

[EM] How close can we get to the IIAC

2010-04-15 Thread fsimmons
Arrow's Theorem is grossly misunderstood, because people have the mistaken impression that the Independence from Irrelevant Alternatives Criterion (IIAC) is on a par with the other criteria he mentions in his theorem. To clear this up, let's consider the following theorem which is the essence of A

Re: [EM] Why do voters vote? (or why do we even bother to have elections?)

2010-04-15 Thread robert bristow-johnson
On Apr 15, 2010, at 9:46 AM, Terry Bouricius wrote: There has been some interesting writing about disputes over the value of "rational choice" theory, especially as applied to voting. Since a single voter's vote has almost no chance of having any impact, it is rational to avoid the burden

[EM] Paper by Ron Rivest

2010-04-15 Thread Markus Schulze
Hallo, here is an interesting paper by Ron Rivest: http://people.csail.mit.edu/rivest/RivestShen-AnOptimalSingleWinnerPreferentialVotingSystemBasedOnGameTheory.pdf He gets to the conclusion that the Schulze method is "nearly perfect" (page 12). Markus Schulze Election-Methods mailing lis

Re: [EM] How to fix the flawed "Nash equilibrium" concept for voting-theory purposes

2010-04-15 Thread Warren Smith
I'm trying only to post on the election science foundation re this topic, so please look there: http://groups.google.com/group/electionsciencefoundation There are a lot of developments there. However since I see a bunch of comments built up at electorama, I will try to process them now a bit and

[EM] Why do voters vote?

2010-04-15 Thread Terry Bouricius
Michael, Frank, Fred, et. al. I have changed the subject line for this epicyclical discussion on why voters vote. There has been some interesting writing about disputes over the value of "rational choice" theory, especially as applied to voting. Since a single voter's vote has almost no chance

Re: [EM] How to fix the flawed "Nash equilibrium" concept for voting-theory purposes

2010-04-15 Thread Michael Allan
> > ... Consider these two facts: > > > > 1. Current voting methods lack the Nash-redeeming addition. In a > > typical election, no individual vote has any effect on the > > result. The effect is exactly zero. > > > > 2. Voters nevertheless turn out in large numbers. > > > > It follows