Adam Sobel: I've been in this area now for a decade, at least going back to my interview with Brian knows. Sobel: My skepticism about empirical work has colored the way I see essays like yours. Sobel says he is uniquely uninterested in trying to control other people's behavior and to say, nobody should do this or everybody should do that. He suggests we leave it to diversity of humanity to figure out what to do about that. The episode will be re-run on "Sopranos" next week.