Yes, I know I'm supposed to be on vacation (as my Dear Wife reminded me), but even so I heard the news of Sarah Palin announcing her resignation as Alaska's governor. I was surprised, like everyone else, and puzzled, like ditto.
I've read a number of analyses, none of them really heart-lifting. And of them all, as so often happens, Mark Steyn's take seems like it packs an awful lot of common sense. At present, it makes about the best sense to me.