Mention a name or theme -- Brett Favre, the Patriots under Belichick, Lance Armstrong's comeback, Venus and Serena -- and anyone who cares about sports can have a very sophisticated discussion about the ins and outs and myth and realities and arguments and rebuttals.

People who don't like sports can't do that. It's not so much that they can't identify the names -- they've heard of Armstrong -- but they've never bothered to follow the flow of debate. I like sports -- and politics and tech and other topics -- so I like joining these debates. On a wide range of other topics -- fashion, antique furniture, the world of restaurants and fine dining, or (blush) opera -- I have not been interested enough to learn anything I can add to the discussion. So I embarrass myself if I have to express a view.

What Sarah Palin revealed is that she has not been interested enough in world affairs to become minimally conversant with the issues. Many people in our great land might have difficulty defining the "Bush Doctrine" exactly. But not to recognize the name, as obviously was the case for Palin, indicates not a failure of last-minute cramming but a lack of attention to any foreign-policy discussion whatsoever in the last seven years.