Vladimir_Nesov comments on Ingredients of Timeless Decision Theory - Less Wrong
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Except that the analogy to rock-paper-scissors would be that I get to move logically first by deciding my conditional strategy "rock if you play scissors" etc., and simulating you simulating me without running into an apparently non-halting computation (that would otherwise have to be stopped by my performing counterfactual surgery on the part of you that simulates my own decision), then playing rock if I simulate you playing scissors.
At least I think that's how the analogy would work.
I suspect that this kind of problems will run into computational complexity issues, not clever decision theory issues. Like with a certain variation on St. Petersburg paradox (see the last two paragraphs), where you need to count to the greatest finite number to which you can count, and then stop.