I don't think most people who meet in their community or state and build coalitions for local or statewide election success are likely to be "dumb." Having said that we all know great scout leaders, mayors, ministers, friends who for various reasons we might not feel very comfortable with as President.
Former Gov. Palin like all of us, made life choices, and decisions about what are the priorities of life. It is difficult to imagine a future president who has not taken at least some chunks of their past to master the basics of complex economic, social, environmental, and foreign policies issues. Slogans and sound bite answers go only so far.
What I think the media magnifies, and Palin reinforces by not saying "I really don't know, but I will find out and get back to you," is a lack of serious historical and political knowledge required today. Like them or not, few can condemn the life experiences, school, or even gradauate work which helped prepare Carter, both Bushes, Clinton and Pres. Obama.
Palin does not seem to be the best candidate in these times.
But our greatness is that we are free to disagree with each other.