[EM] ERBucklin with AERLO, and Strong FBC

[Alex Small]

Mike-

Probably the most significant difference between my definition and yours
is that you focus on the incentives facing a single voter given all other
voters' ballots, while I focus on the incentives facing a coalition of
like-minded voters (i.e. a set of voters with identical ordinal
preferences, but not necessarily the same cardinal preferences).

The rationale is that if I prefer A>B>C, and you prefer A>B>C, it doesn't
really matter from a STRATEGIC standpoint whether I think A is much better
than B while you think A is just slightly better than B.  All that matters
is that we'd both benefit from a maneuver that elects A instead of B or B
instead of C.  Of course, from a POLITICAL standpoint it could matter a
great deal, but that goes beyond the strategic issues I'm considering at
the moment.

Another rationale for focusing on groups of voters is that in many cases a
single voter can at best change it from a definite result to a tie, while
a coalition of voters may be able to change it from one definite outcome
to another.

MIKE OSSIPOFF said:
>
> Alex--
>
> You wrote:
>
> ERBucklin probably does pass weak FBC (the version that allows ranking
> somebody equal to your favorite)
>
> I reply:
>
> Yes, at least when FBC is defined as I do, in terms particular
> configurations of other people's votes, FBC00. I'm not entirely sure if
> ERBucklin without AERLO passes your FBC defined in terms of incentive,
> FBC10, FBC20, or FBC30.
>
> You continued:
>
> ... but it flunks strong FBC.
>
> I reply:
>
> But does it flunk Strong FBC, by my less demanding definition, FBC01,
> when  AERLO is available?
> Even if it doesn't, it might well fail your Strong FBC, defined in terms
> of  incentive: FBC11, FBC21, or FBC31.
>
> Mike Ossipoff
>
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