[EM] Dave: Condorcet
jameson.quinn at gmail.com
Sun Apr 1 20:12:15 PDT 2012
2012/4/1 robert bristow-johnson <rbj at audioimagination.com>
> On 4/1/12 2:23 PM, Dave Ketchum wrote:
> On Mar 28, 2012, at 10:42 AM, MIKE OSSIPOFF (whom i've plonked) wrote:
>>> You wrote:
>>> Which leaves me promoting Condorcet. It allows ranking but, unlike
>>> ABucklin or IRV, all that a voter ranks gets counted. Further, any
>>> voter able to match their desires to Plurality or Approval for a
>>> particular election, can vote by those rules and have them counted
>>> with the same power by Condorcet rules.
>> Why bother? I see Fine and Soso as best so would consider approving
>> both. Trouble is that this would imply equal liking, perhaps getting Soso
>> elected while I like Fine much better.
>> With Condorcet I can rank Fine above Soso, so that my ranking can improve
>> the chance of Fine getting elected, while Soso has a chance if Fine fails.
> the question the Approval guys never seem to answer is: "Do I or do I not
> approve my 2nd choice?" (It is a similar question to the counterpart in
> Range/Score: "How high do I rate my 2nd choice?")
There are many answers to that question, depending on how simple you want
it, and how much polling information you have. I understand that many
answers is in some cases as bad as none.
> Approval applies a burden of tactical voting to the voter right from the
> start. perhaps someone will want to bury a candidate they sorta like but
> who is not their favorite, to help their favorite win.
This is true.
> if they don't Approve, then how much Bayesian regret will result when
> they find out their favorite was not in the running at all and their 2nd
> choice lost narrowly to someone they hated? if they do Approve, how much
> regret will result when their favorite lost narrowly to their 2nd choice?
The good thing is, the simple answer to both of these questions is "less
than with plurality".
> so with me, the Score and Approval advocates do not get past square 1
> because of that.
Well, if square 1 is plurality, then I'd strongly disagree. If square 1 is
"what's the best possible voting system", then I'm not sure what square 2
would be, but I'd still agree, as I think most people here would.
> r b-j rbj at audioimagination.com
> "Imagination is more important than knowledge."
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