[EM] Re: group strategy equilibria

Jobst Heitzig heitzig-j at web.de
Tue Aug 24 05:27:01 PDT 2004

[same post as before, now with word-wrapping -- sorry...]

Hi folks!

Just to repeat myself [another time ;-] : We must consider NON-DETERMINISTIC methods like ROACC (see my post on the "recommendations" thread) since they are THE ONLY methods which ensure at least weak group strategy equilibria (weak GSE, i.e. a situation in which there is a counter-threat to every strategic threat)!

Here's a short version of the argument again: With a deterministic method, there is never even a weak GSE as long as there is no sincere CW (which is quite probable as we know!). This is because whatever candidate A gets elected, there is always a majority prefering some B who can elect B by voting "B > all others" without there being any counter-strategy to this threat. With a non-deterministic method like ROACC which draws the winner from a probability distribution P on few but enough candidates (log n  out of  n  candidates will suffice in general), there *are* weak GSEs!

By the way, ROACC is also VERY SIMPLE and can even be performed by raising hands without even using pen or paper!

Sincerely, Jobst
Verschicken Sie romantische, coole und witzige Bilder per SMS!
Jetzt neu bei WEB.DE FreeMail: http://freemail.web.de/?mc=021193

More information about the Election-Methods mailing list