[EM] (no subject)

Alex Small asmall at physics.ucsb.edu
Sun Jul 13 17:28:09 PDT 2003

Eric Gorr said:
> Would it be accurate to say that you disagree with Arrow that a
> voting system should be monotonic? (IRV is not)

I don't recall monotonicity being one of the conditions of Arrow's
Theorem.  Maybe in some more elaborate forms it is, but the most basic
statement of Arrow's Theorem is that "when there are 3 or more candidates
no election method can simultaneously satisfy Pareto efficiency,
independence from irrelevant alternative candidates, and

Monotonicity is not on that list.

Alex Small

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