Having X be 100% means nothing ever gets decided outside of very very small groups. See http://slatestarcodex.com/2013/04/12/noisy-poll-results-and-reptilian-m

Having X be 100% means nothing ever gets decided outside of very very small groups. See http://slatestarcodex.com/2013/04/12/noisy-poll-results-and-reptilian-muslim-climatologists-from-mars/ http://slatestarcodex.com/2013/04/12/noisy-poll-results-and-... for some actual data on what people do when presented with polls.