To whom it may concern:
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.
(After the critical success of part II, and the strong box office sales of part III in spite of mixed reviews, will part IV finally see the June Open Thread jump the shark?)
The caveat is of course that Counterfactual Mugging or Newcomb Problem are not to be analyzed as situations you encounter in real life: the artificial elements that get introduced are specified explicitly, not by an update from surprising observation. For example, the condition that Omega is trustworthy can't be credibly expected to be observed.
The thought experiments explicitly describe the environment you play your part in, and your knowledge about it, the state of things that is much harder to achieve through a sequence of real-life observations, by updating your current knowledge.
I dunno, Newcomb's Problem is often presented as a situation you'd encounter in real life. You're supposed to believe Omega because it played the same game with many other people and didn't make mistakes.
In any case I want a decision theory that works on real life scenarios. For example, CDT doesn't get confused by such explosions of counterfactuals, it works perfectly fine "locally".
ETA: My argument shows that modifying yourself to never "regret your rationality" (as Eliezer puts it) is impossible, and modifying yourself to "regr... (read more)