wedrifid comments on Decision Theory FAQ - Less Wrong

52 Post author: lukeprog 28 February 2013 02:15PM

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Comment author: wedrifid 02 March 2013 07:02:56AM 0 points [-]

All right, but how would CDT fail us, if we used it perfectly?

If we used it perfectly it would fail us very little. The 'used perfectly' part would prompt us to create and optimize institutions to allow the limitations of CDT to be worked around. It would result in a slightly less efficient system with some extra overheads and some wasted opportunities but it would still be rather good. Specifically it would require more structures in place for creating and enforcing precomittments and certain kind of cooperation would be unavailable.

Comment author: [deleted] 05 March 2013 02:41:30AM 0 points [-]

Ah, that's right. CDT tells you to defect in a prisoner's dilemma against someone identical to you; TDT tells you to cooperate. So TDT wins here.

Comment author: Kindly 05 March 2013 03:43:17AM 0 points [-]

CDT does, however, tell you to precommit to cooperate in a prisoner's dilemma against someone who also precommits to cooperate with you, if this is an option.