On Tue, May 27, 2003 at 02:25:35PM +1000, Anthony Towns wrote: > On Mon, May 26, 2003 at 08:45:31PM -0400, Andrew Pimlott wrote: > > I _think_ the same basic strategy applies: Rank the non-default > > options sincerely, then insert the default option after your "lesser > > of evils" option. > > That doesn't work. Suppose there are three options, and everyone does this. > People vote: > > 20 ADBC > 20 BDAC > 20 CDAB > > A beats B 40:20 > B beats C 40:20 > A beats C 40:20 > D beats A, B and C 40:20 > > Which makes D win, rather than A, B or C.
Unfortunately, that doesn't mean this is not the best strategy. It could be that the best strategy, applied by everyone, tends to produce stalemate. :-/ However, throw in one more ADBC vote, and Concorcet+SSD will declare A the winner, whereas the proposed method will be stuck on D. That suggests that Concorcet+SSD is more resistant to this strategy. (That said, this strategy does appear to be effective against Concorcet+SSD in many cases.) Andrew
