Say what you will about the still-governor of Alaska, Sarah Palin. She sure knows how to separate the metaphorical men from the boys. How many figures of her national stature—for better or worse—could make so dramatic an announcement as she did on Friday afternoon and leave the rest of the country with no idea whatsoever what the hell it meant? Is it good for her or bad? Is it good for the country or bad? Is it brilliant? Is it nuts? Is she nuts? Are we as a people nuts to have let this nutty woman get as close to the White House as we did in the first place? (Doesn’t that McCain fellow have some ‘splaining to do?) It is a reflection on the Mystery of Palin, my friend Ed Kilgore notes, “that none of us has any real idea whether she's imminently headed in...