Oh, and your source has twisted Game Change. What it actually says, from the book in front of me, is:

"Palin couldn't explain why North and South Korea were separate nations." Not being able to explain why and not knowing they're different at all are completely different things, and one is much worse than the other. And, IMO, when the media twists things as important as these stories to make a point that isn't actually quite there, that's at least as dangerous as any slip of the tongue, and Palin seems to suffer more from this than anyone else. It has the opposite effect on me than the media is aiming for, just as it does on Jon Stewart. I just end up feeling bad for her.