Sam Harris has written an excellent scathing critique of Sarah Palin in Newsweek.
What is so unnerving about the candidacy of Sarah Palin is the degree to which she represents—and her supporters celebrate—the joyful marriage of confidence and ignorance. Watching her deny to Gibson that she had ever harbored the slightest doubt about her readiness to take command of the world's only superpower, one got the feeling that Palin would gladly assume any responsibility on earth:
"Governor Palin, are you ready at this moment to perform surgery on this child's brain?"
"Of course, Charlie. I have several boys of my own, and I'm an avid hunter."
"But governor, this is neurosurgery, and you have no training as a surgeon of any kind."
"That's just the point, Charlie. The American people want change in how we make medical decisions in this country. And when faced with a challenge, you cannot blink."
On a related note, the McCain campaign was worried that her inexperience might put her at a disadvantage in a debate with Biden.
If you're not absolutely terrified of McCain and Palin winning this election, you are wrong in your sentiment.