Manfred comments on Newcomb's problem - one boxer's introspection. - Less Wrong Discussion
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Comments (19)
If the psychologist was predicting you based off of a simple algorithm that only took your test scores as inputs, or something like that, you would be totally right.
But it starts to look a lot like Newcomb's problem if the psychologist is predicting you using an algorithm similar to the one you use to make the decision - in that case you should one-box.
Not necessarily, it's hard to say what you should actually do. Maybe the psychologist is gullible enough and you can succeed in getting both non-empty boxes.
So you put a probability on that and do an expected utility calculation.
(It's hard to say how to put a probability on that.)