Jayson_Virissimo comments on Problematic Problems for TDT - Less Wrong

36 Post author: drnickbone 29 May 2012 03:41PM

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Comment author: ciphergoth 23 May 2012 10:37:18AM 11 points [-]

BTW, general question about decision theory. There appears to have been an academic study of decision theory for over a century, and causal and evidential decision theory were set out in 1981. Newcomb's paradox was set out in 1969. Yet it seems as though no-one thought to explore the space beyond these two decision theories until Eliezer proposed TDT, and it seems as if there is a 100% disconnect between the community exploring new theories (which is centered around LW) and the academic decision theory community. This seems really, really odd - what's going on?

Comment author: Jayson_Virissimo 23 May 2012 12:59:51PM 12 points [-]

Yet it seems as though no-one thought to explore the space beyond these two decision theories until Eliezer proposed TDT...

This is simply not true. Robert Nozick (who introduced Newcomb's problem to philosophers) compared/contrasted EDT and CDT at least as far back as 1993. Even back then, he noted their inadequacy on several decision-theoretic problems and proposed some alternatives.

Comment author: ciphergoth 23 May 2012 01:14:53PM 4 points [-]

Me being ignorant of something seemed like a likely part of the explanation - thanks :) I take it you're referencing "The Nature of Rationality"? Not read that I'm afraid. If you can spare the time I'd be interested to know what he proposes -thanks!

Comment author: Jayson_Virissimo 23 May 2012 01:49:20PM *  6 points [-]

I haven't read The Nature of Rationality in quite a long time, so I won't be of much help. For a very simple and short introduction to Nozick's work on decision theory, you should read this (PDF).