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Re:Arrow's impossibility theorem by vezzy-fnord on Wednesday June 03, 2015 @06:49PM (#9656380)
Try the Stanford Encyclopedia of Philosophy's take on it: http://plato.stanford.edu/entries/arrows-theorem/

It's actually not that "simple", but it's overall less technical.

Re:Arrow's impossibility theorem by theVirginian on Wednesday June 03, 2015 @07:13PM (#9656494)
It's technical which is good but much better written than Wikipedia.