dxu comments on Why isn't the following decision theory optimal? - Less Wrong Discussion
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Isn't "NDT" just CDT + reflective consistency? There are a number of reasons why that might fail. (Can't think of any right now, though--I'll get back to you.)
Pretty much. The fact that NDT is so obvious is why I'm puzzled as to why TDT needed to be created, and why Eliezer didn't end his paper shortly after the discussion of Gloria. NDT seems to get all the tricky decision problems right, even at least one that TDT gets wrong, so what am I missing?