Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-17 Thread Kristofer Munsterhjelm
Dave Ketchum wrote: I suggest a two-step resolution: Agree to a truce between Condorcet and Range, while they dispose of IRV as being less capable than Condorcet. Then go back to the war between Condorcet and Range. I think the problem, or at least a part of it, is that if we (the

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-17 Thread Dave Ketchum
On Fri, 17 Oct 2008 22:08:32 +0200 Kristofer Munsterhjelm wrote: Dave Ketchum wrote: I suggest a two-step resolution: Agree to a truce between Condorcet and Range, while they dispose of IRV as being less capable than Condorcet. Then go back to the war between Condorcet and Range.

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-15 Thread Jobst Heitzig
Dear Kristofer, you wrote: Since Condorcet is a majoritarian method (as it needs to be in order to be a good single-winner method) ... A good single-winner method *must not* be majoritarian but must elect C in the situation of 55% voters having A 100 C 80 B 0 and 45%

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-15 Thread Dave Ketchum
On Wed, 15 Oct 2008 18:49:41 +0200 Kristofer Munsterhjelm wrote: Raph Frank wrote: On 10/9/08, Dave Ketchum [EMAIL PROTECTED] wrote: If there is a near tie among three or more, they often disagree but usually get one of the leaders - matters little since the leaders were about equally

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-13 Thread Raph Frank
On 10/13/08, Aaron Armitage [EMAIL PROTECTED] wrote: Any strategically informed voter will give approval-like ratings, and will approve the top two frontrunner he likes better, as well as any candidates he prefers to that frontrunner, which means that the stated ratings will look like that

[EM] IRV vs Condorcet vs Range/Score

2008-10-12 Thread Chris Benham
Aaron, I agree that not electing a voted CW is undesirable, and any method that fails the Condorcet criterion needs to be justified by complying with at least one desirable criterion that isn't compatible with Condorcet. Low social utility (SU) Condorcet winners with little solid support and

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-11 Thread Aaron Armitage
I think his point is that he prefers any and all Condorcet methods over IRV, and probably over any non-Condorcet method. I happen to agree. --- On Sat, 10/11/08, Chris Benham [EMAIL PROTECTED] wrote: From: Chris Benham [EMAIL PROTECTED] Subject: [EM] IRV vs Condorcet vs Range/Score To: EM

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-11 Thread Aaron Armitage
. --- On Sat, 10/11/08, Chris Benham [EMAIL PROTECTED] wrote: From: Chris Benham [EMAIL PROTECTED] Subject: Re: [EM] IRV vs Condorcet vs Range/Score To: [EMAIL PROTECTED] Date: Saturday, October 11, 2008, 10:30 AM All possible Condorcet methods?    - Original Message From: Aaron

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-09 Thread Raph Frank
On 10/9/08, Dave Ketchum [EMAIL PROTECTED] wrote: If there is a near tie among three or more, they often disagree but usually get one of the leaders - matters little since the leaders were about equally deserving. It matters because IRV reinforces the 2 party system. it would be

Re: [EM] IRV vs Condorcet vs Range/Score

2008-10-09 Thread Dave Ketchum
On Thu, 9 Oct 2008 15:18:50 +0100 Raph Frank wrote: On 10/9/08, Dave Ketchum [EMAIL PROTECTED] wrote: If there is a near tie among three or more, they often disagree but usually get one of the leaders - matters little since the leaders were about equally deserving. This was part of my

[EM] IRV vs Condorcet vs Range/Score

2008-10-09 Thread Chris Benham
Dave Ketchum wrote: I started this thread to compare IRV vs Condorcet, believing that IRV is provably less capable and deserves discarding. Dave, Comparing a decisive method  with a criterion is a bit like comparing a person with  virtue.  As soon as you tell us which  *decisive method* you

[EM] IRV vs Condorcet vs Range/Score

2008-10-08 Thread Dave Ketchum
I suggest a two-step resolution: Agree to a truce between Condorcet and Range, while they dispose of IRV as being less capable than Condorcet. Then go back to the war between Condorcet and Range. Condorcet uses essentially the same ballot as IRV, with essentially the same meaning: