Theory: Tom is really running a series of psychological experiments based on different variations of the prisoner's dilemma.,(reply>), It's not a theory, he is literally running 'experiments' (although without full experimental design) based on game theory (which is admittedly a lot more than just the Prisoner's Dilemma).,(reply>)," Details about the games are in the credits at <a href=""https://www.youtube.com/watch?v=FJSI7QTAt_o&amp;t=1h08m05s"">1:08:05</a>",(reply>), totally. totally, totally right,(reply>), A lot of these games are unique games in game theory, there isn't just the prisoner's dilemma.