[EM] James, Preference Pareto

[MIKE OSSIPOFF]

James--

Yes, that would be a way to define Pareto for preferences: If everyone 
prefers X to Y and votes sincerely, Y shouldn't win.

I suppose Approval could fail that if everyone votes for both or neither of 
X & Y, and  as a result X and Y are in a tie for first place, so X and Y 
win. Or, if we count the random tiebreaker as part of the method, then Y 
could win that tiebreaker.

As I define sincere voting, a sincere Approval ballot is one that doesn't 
reverse a preference. That's the result of applying my general sincere 
voting definition to Approval:

A voter votes sincerely if s/he doesn't reverse a preference or fail vote a 
preference that the balloting system in use would have allowed him/her to 
vote in addition to the preferences that s/he actually did vote.

[end of sincere voting definition]

Elsewhere I've defined reversing a preference and voting a preference.

Mike Ossipoff

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