MEGAN MCARDLE IS BACK, with posts on Sarah Palin (“On Sarah Palin as a VP I have no particular opinion, except that she doesn’t make me any more interested in voting for John McCain. But the people criticizing her are making me considerably less interested in voting for Obama. “) and the questionable effectiveness of both abstinence education and traditional sex ed (“In the 1950s, such programs undoubtedly would have been very effective. But these days, a kid who wants to get hold of birth control is very, very unlikely to be unaware where babies come from, or where they keep the birth control.”)