I don’t knock Palin for not knowing some stuff I know; she knows some stuff I don’t know. As Will Rogers said, we’re all ignorant, just about different things.
But Palin also appears to be deeply incurious. That, plus her habit of bluffing instead of saying “I don’t know,” might well insulate her from the learning we would all need her to do. So far, her approach to learning the stuff she doesn’t know that’s relevant to being President is that of a student who has partied away the semester and is now cramming for the exam. Not encouraging.