12/33. I'm skeptical about what one could learn from psychopaths, other than screwing people over, lying to people, conning people and screwing people over. Did I mention screwing people over? Anyway, I think that knowing how they do things and doing it yourself are two very different things. Supposedly some psychopaths get so caught up in their lies that they can't tell what the truth was to begin with. It's that kind of immersion that lets them be so confident in their deception.