This is a woman who is incapable of passing a Turing test

Ellis Weiner at HuffPo:
With Palin we encounter the purest example, in our lifetime, of a candidate whose mere presence on a national ticket demeans and pollutes the very process. To watch her being interviewed is to behold someone not only unwilling, but constitutionally unable, to give a lucid answer to a serious question...

This is a woman who is incapable of passing a Turing test, let alone acting as a Vice-President.