The September Open Thread, Part 2 has got nearly 800 posts, so let's have a little breathing room.
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.
Many problems with your comment.
1) Why do you pull subjective experience into the discussion at all? I view decision theory as a math problem, like game theory. Unfeeling robots can use it.
2) How can an "instantiation" of a class of isomorphic computations tell "itself" from all the other instantiations?
3) The opposing effects in all possible worlds don't have to balance out, especially after we weigh them by our utility function on the worlds. (This is the idea of "probability as degree of caring", I'm a little skeptical about it but it does seem to work in toy problems.)
4) The most important part. We already have programs that cooperate with each other in the Prisoner's Dilemma while being impossible to cheat, and all sorts of other shiny little mathematical results. How can your philosophical objections break them?
If you're referring to the discussion about time, that's a digression that doesn't involve decision theory.
It's a logical distinction, not an empirical one. Whoever you are, you are someone in particular, not someone in general.
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