Except that I strongly suspect that decision theory is trivially solvable by the very fact that predictors predict correctly and/or simulate us and by the very idea of superrationality, which means that one should assume that the opponent reasons in a similar way unless there is evidence proving otherwise. In this case the wrong decision theories would fly out the window, leaving us with anthropics-related questions.
Except that I strongly suspect that decision theory is trivially solvable by the very fact that predictors predict correctly and/or simulate us and by the very idea of superrationality, which means that one should assume that the opponent reasons in a similar way unless there is evidence proving otherwise. In this case the wrong decision theories would fly out the window, leaving us with anthropics-related questions.