Re:Arrow's impossibility theorem
by bradleyjg on Wednesday June 03, 2015 @07:06PM
(#9656459)
It is a theorem about the properties of all possible voting systems with preference rankings. The basic idea is there are a few desirable properties for any such voting system, but that it is mathematically impossible for any voting system to satisfy all of them.
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Re:Arrow's impossibility theorem
by dragonwriter on Wednesday June 03, 2015 @07:14PM
(#9656500)
> It is a theorem about the properties of all possible voting systems with preference rankings.
More accurately, it is a theorem about the properties of all possible voting systems where the input is voters preference rankings and the output is also a preference ranking.