[JanezStupar]

Oh, psychopath will play your prisoners dilemma. He WILL be the one to talk you into cooperation.

He will not attack you in public unless he has public on his side. Thats what makes a psychopath so horrible.

He will fuck you over then he will convince everybody else that you fucked him over.

Psychopaths are Varelse in emotional sense.

[chrischen]

He fucks you over and that is eventually a non-cooperation in an even bigger iterated prisoner's dilemma game.

Unless you willingly let him fuck you in the ass again, then his psychopathic strategy will no longer work on you, and you will at least not cooperate, and possibly retaliate resulting in a net loss. In fact, this is extremely likely because it's in your incentive now to disincentivize him from further fucking you because you want to send the proper signal.