I'm not sure I agree with myself. I think my analysis makes sense for the way TDT handles Newcomb's problem or Prisoner's dilemma, but it breaks down for Transparent Newcomb or Parfit's Hitch-hiker. In those cases, owing to the assistance of a predictor, it seems like it is actually possible to know your decision in advance of making it.
Well you always know that one of your counterfactuals is true.
and Transparent Newcomb is a bit weird because one of the four possible strategies just explodes it.
Y'all know the rules: