[EM] Does MAM use the Copeland method?

[Paul Kislanko]

I KNOW most pairwise methods elect A in this example. But pairwise A loses
to C by a majority, so why do the methods elect A?

 

> -----Original Message-----
> From: election-methods-electorama.com-bounces at electorama.com 
> [mailto:election-methods-electorama.com-bounces at electorama.com
> ] On Behalf Of Steve Eppley
> Sent: Wednesday, October 06, 2004 3:46 PM
> To: election-methods at electorama.com
> Subject: RE: [EM] Does MAM use the Copeland method?
> 
> Hi,
> 
> Paul K wrote:
> > Any argument that begins with "perhaps they..." is a 
> speculation, not 
> > an argument. From the ballots, 55.555556 percent of the voters 
> > preferred a candidate that was not elected.
> 
> But that's what I'd pointed out:  All we know is that they 
> _preferred_ a defeated candidate.  Paul had claimed they were 
> also _unhappy_ and I gave a reason why they might not be 
> unhappy.  The burden is on Paul to explain why he claimed 
> they'd be unhappy.
> 
> I prefer Milky Way candy bars over Three Musketeers, but it 
> won't make me unhappy to be given a Three Musketeers bar.
> 
> In a separate message, Paul also wrote:
> > For the same set of ballots, pairwise comparisons result in a 
> > different winner based upon which voting method is 
> employed. So which 
> > one you use is an article of faith, not reason.
> 
> Most pairwise methods elect A in that example.  Copeland is 
> the only pairwise method I know that doesn't, and it returns 
> a 3-way tie.  Copeland//Plurality, the method advocated by 
> Bruce Anderson--the only member of this list who, to my 
> knowledge, ever advocated any variation of Copeland--also elects A.
> 
> Assuming Paul had his argument straight, that is, if he'd 
> cited an example where good pairwise methods do pick 
> different winners, his conclusion that which one of these 
> methods to use is an article of faith rather than reason 
> makes some sense to me, given that we cannot empirically 
> determine which method is best.  We can only make educated 
> guesses based on speculative arguments, and see which of 
> these arguments resonates with enough people to convince them 
> to give the method a try.  
> 
> In yet another message, Paul called it the Borda method to 
> use graded ballots such as A+, A, A-, B+, etc.  He's made so 
> many odd claims today, I must request he send me some of 
> whatever he's been imbibing.
> 
> --Steve
> 
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