Breitbart writes, In response to Guilty of Video Game Sin: And don't forget, Sonnie, you can use "Bioshock" to teach kids about Objectivism! [ducks under table to avoid fruit thrown by angry Objectivists,] To some extent, I've always been a bit reluctant to get drawn into the discussion of videogaming's purported positive qualities because (a) one should not have to defensively justify enjoyable entertainments and free speech against prosecution by citing their merits, and (b) I wouldn't want to oversell those benefits. For years we've seen studies that showed advantages to reaction time, hand-eye…