Players cannot communicate in a prisoners dilemma, however the notion of a Precommitment Strategy[0] is very real in game theory and the player in the linked vi

Players cannot communicate in a prisoners dilemma, however the notion of a Precommitment Strategy[0] is very real in game theory and the player in the linked video is doing just that; committing to a strategy in advance of the actual decision making. [0] http://en.wikipedia.org/wiki/Precommitment http://en.wikipedia.org/wiki/Precommitment