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.
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.