TheOtherDave comments on Decision Theories: A Less Wrong Primer - Less Wrong

69 Post author: orthonormal 13 March 2012 11:31PM

You are viewing a comment permalink. View the original post to see all comments and the full post content.

Comments (172)

You are viewing a single comment's thread. Show more comments above.

Comment author: TheOtherDave 14 March 2012 03:09:43AM 0 points [-]

OK, ignore those examples for a second, and ignore the word "advanced."

The OP is drawing a distinction between CDT, which he claims fails in situations where competing agents can predict one another's behavior to varying degrees, and other decision theories, which don't fail. If he's wrong in that claim, then articulating why would be helpful.

If, instead, he's right in that claim, then I don't see what's useless about theories that don't fail in that situation. At least, it certainly seems to me that competing agents predicting one another's behavior is something that happens all the time in the real world. Does it not seem that way to you?

Comment author: ksvanhorn 14 March 2012 04:40:22AM 0 points [-]

But the basic assumption of standard game theory, which I presume he means to include in CDT, is that the agents can predict each other's behavior -- it is assumed that each will make the best move they possibly can.

I don't think that predicting behavior is the fundamental distinction here. Game theory is all about dealing with intelligent actors who are trying to anticipate your own choices. That's why the Nash equilibrium is generally a probabilistic strategy -- to make your move unpredictable.

Comment author: TheOtherDave 14 March 2012 04:49:36PM *  0 points [-]

I'm not sure that equating "CDT" with "standard game theory" as you reference it here is preserving the OP's point.