But I do know that I have seen long lists from Eliezer of problems that TDT does not solve that he thinks it ought to be improved so as to solve.
Since CDT and EDT don’t solve those problems either, all this justifies saying is that TDT does better on some problems, and the same on others, not “worse on others”.
A “nemesis” environment that feeds misleading evidence to a decision theory’s underlying epistimology does not indicate the sort of problem illustrated by an environment in which a decision theory does something stupid with true information.
What you asked for was a case where a decision theory did worse than its rivals.
However, that seems pretty trivial if it behaves differently from them—you just consider an appropriate pathological environment set up to punish that decision theory.
Since CDT and EDT don’t solve those problems either, all this justifies saying is that TDT does better on some problems, and the same on others, not “worse on others”.
For every possible decision theory, there is a “nemesis” environment—where it does extremely badly. That is no-free-lunch fall out.
A “nemesis” environment that feeds misleading evidence to a decision theory’s underlying epistimology does not indicate the sort of problem illustrated by an environment in which a decision theory does something stupid with true information.
What you asked for was a case where a decision theory did worse than its rivals.
However, that seems pretty trivial if it behaves differently from them—you just consider an appropriate pathological environment set up to punish that decision theory.
Yes, in the context of Perplexed dismissing examples of TDT doing better than CDT because CDT was being stupid with true information.