[EM] Correction: Approval Margins fails Chicken Dilemma

C.Benham cbenham at adam.com.au
Mon Apr 28 23:23:05 PDT 2014


Oops!  I've just discovered that my recent claim that Approval Margins  
(and Approval Margins Sort)
fails the CD criterion is wrong.   Sorry.

35 A>B
25 B
40 C

B>C>A>B   Approvals: B60 > C40 > A35   (Approval Margins Sort elects B)

Approval Margins: A>B -25,   B>C +20,  C>A +5.  B's defeat is the 
weakest so B wins.

The combination of CD and Plurality  says that C must win.

http://wiki.electorama.com/wiki/Chicken_Dilemma_Criterion


Chris Benham





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