would have caused carnage. we'll never know. clearly something flipped to make him kill his parents. what do you think of the gun pect of this? >> i believe him. and look, some things are just obvious. if he had had an assault weapon and he did what he did, it likely would have gone further. that seems likely. but the best predictor of future behavior is past behavior. this is a guy who was not violent. his violence for how many minutes was he violent? in terms of predicting is he a changed man? i don't think that's the question. the question is, is his illness controlled? is he being treated in prison? the man himself, if you look at the trajectory of his life, is not a violent man. >> what's fascinating about these recent shooters, if you look at james holmes in aurora, adam lanza at sandy hook and you go back to tucson and others, these are young men, as i said earlier, disenfranchised they feel by society, who flip and