Vaniver comments on Open Thread, January 1-15, 2013 - Less Wrong

5 Post author: OpenThreadGuy 01 January 2013 06:09AM

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Comment author: Vaniver 01 January 2013 06:48:23PM *  3 points [-]

Would most game theorists say that they would defect against copies of themselves in a one-shot PD?

It depends on what "against copies of themselves" means. If it means "I know the other person behaves like a game theorist, and the payoff matrix is denominated in utility," then yes. If it means "I know the other person behaves like a game theorist, but the payoff matrix is not denominated in utility because of my altruism towards a copy of myself," then no. If it means "I expect my choices to be mirrored, and the payoff matrix is denominated in utility," then no.