Re: Constitutional amendment: Condorcet/Clone Proof SSD vote tallying

[Markus Schulze <markus.schulze@alumni.tu-berlin.de>]

Dear Nathanael,

Raul Miller wrote (25 May 2003):
> Correct me if I'm wrong, but: what Manoj's May 15 proposal
> implements logically equivalent to your suggestion?

I wrote (25 May 2003):
> As far as I have understood Manoj's May 15 proposal correctly,
> an option is dropped unless it _directly_ defeats the default
> option with the required quorum. I suggest that it should be
> sufficient that this option _transitively_ defeats the default
> option with the required quorum.

You wrote (25 May 2003):
> Let me apply this to my evil testcase. :-)
>
> 19x A=DB
> 19x ABD
> 1x BA=D
>
> A defeats B by 38 to 1
> A defeats D by 19 to 0
> B defeats D by 20 to 19.
>
> On the A->B->D defeat path, A defeats D with 20 positive
> votes at the weakest link, which makes quorum, and A wins.
>
> Yep, this fixes the perverse result I was talking about in
> another thread (where Manoj's proposal causes B to win).
> Am I correct, Markus?

Yes. You are absolutely correct.

Markus Schulze