[EM] Consistency, Truncation, etc. (was CR ballots, etc.)

Buddha Buck bmbuck at 14850.com
Wed Sep 26 20:20:34 PDT 2001

Forest Simmons <fsimmons at pcc.edu> writes:

> > 
> > I'm falling asleep, I'll answer the rest tomorrow...

> Pretty good post for a sleepy poster!


> Here's a weaker version that might be called the Humble Consistency
> Criterion, because it requires methods that don't satisfy the regular CC
> to admit indecisiveness before they qualify for the HCC. 
> Humble CC:
> If candidate A wins DECISIVELY in all the subsets in some partition of the
> electorate (by restricting the election to the ballots from each of the
> subsets of the partition in turn) then candidate A wins the entire
> election.

By defining "DECISIVELY" for Condorcet Methods as "has a Condorcet
Winner", then Condorcet Methods pass HCC.
> IRV fails even this humble version of the CC.

How do you define "Decisively" for IRV?
> See my Greek Tragedy example in the archives at ...
> http://www.mail-archive.com/election-methods-list@eskimo.com/msg06168.html
> Forest

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