shinoteki comments on Robust Cooperation in the Prisoner's Dilemma - Less Wrong

69 Post author: orthonormal 07 June 2013 08:30AM

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Comment author: shinoteki 11 June 2013 10:33:33AM *  1 point [-]

If you can prove a contradiction, defect.

Should this be "If you can prove that you will cooperate, defect"? As it is, I don't see how this prevents cooperation with Cooperatebot, unless the agent uses an inconsistent system for proofs.

Comment author: Will_Sawin 11 June 2013 04:41:27PM 2 points [-]

It kills the Lobian argument, I believe, since this implication "if there's a proof that you cooperate, then cooperate " is no longer true. Instead, here's a Lobian argument for defection:

Suppose there is a proof that you defect. Then either there is a proof of contradiction, or there is no proof that your move is the same as your opponent's. Either way, you defect.