[EM] Rob: MDDA vs BeatpathWinner

[Rob Lanphier]

Hi Mike,

I could be convinced that MDDA or similar system is better than a
full-on Condorcet system.  The one major objection I have is the lack of
truncation resistance - I really hope we can find a system that
encourages a full ranking.  It seems that MDDA would tend to discourage
ranking anyone below a plausible frontrunner, if I understand it
correctly.

I'd also really like to rename SFC to something that is more descriptive
of what's measured.  If a system encourages truncation, it can't
truthfully be called "strategy free".  Such subjective titles don't
serve us well anyway.  "Majority Pairwise Winner" would be an accurate
and suitable name, but certainly not the only one.  I've contemplated
"Majority Condorcet Winner", but using "Condorcet" in the name isn't
helpful, since I don't think Condorcet ever proposed anything like that.

Rob

On Sat, 2005-10-08 at 02:11 +0000, MIKE OSSIPOFF wrote:
> Rob--
> 
> I've told why I claim that FBC is essential for a political voting system, 
> and that MDDA meets FBC but BeatpathWinner fails FBC.
> 
> I've just told why SFC is better than Condorcet's Criterion. Sure, for 
> sincere-voting committees and organizations, which don't really need FBC as 
> badly, I prefer BeatpathWinner to MDDA, because, though MDDA meets SFC and 
> SDSC, BeatpathWinner additionally meets GSFC, Condorcet's Criterion, and the 
> Smith Criterion.
> 
> But SFC compliance really brings the best of what BeatpathWinner offers. And 
> that can be gotten in combination with FBC, when MDDA is used in public 
> elections.
> 
> Say there are some sincere voters, as you say there will be. None of us can 
> say what percentage they'll be. But, with MDDA, they have SFC's guarantee. 
> In other words, those sincere voters aren't giving up much with MDDA, since 
> SFC is better than Condorcet's Criterion.
> 
> Mike Ossipoff
> 
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