This is all in the context of discussing Newcomb and the smoking lesion. It is possible that libertarian free will is true. If it is, neither Newcomb nor the smoking lesion is possible in the real world, at least in the 100% way.
Hold on. Are you saying that determinism is a precondition, an axiom built into the formulation of the Newcomb and the lesion problems? That they make no sense unless you accept determinism?
Besides, I don't think Newcomb is possible in the real world anyway since, again, it requires a supernatural entity.
The situation is different from the calculator because the calculator does not consider various possible answers, but just calculates a single answer directly. However, the determinist choice would be similar to a chess computer
This implies that the gap between a chess computer and a human is smaller than a gap between a calculator and a chess computer. I am not sure I'm willing to accept that :-/
Yes, I am saying that 100% predictive accuracy does not make sense apart from determinism. I agree that lower degrees of accuracy could happen without complete determinism. Even lower degrees of accuracy would not necessarily change my decision in the scenarios (although it would change the decision once the degree of accuracy became too low.)
I agree with you about the gap between humans, calculators, and chess computers. I am just saying that "making a choice" just implies considering several possibilities before selecting one of them. So it isn...
You're given the option to torture everyone in the universe, or inflict a dust speck on everyone in the universe. Either you are the only one in the universe, or there are 3^^^3 perfect copies of you (far enough apart that you will never meet.) In the latter case, all copies of you are chosen, and all make the same choice. (Edit: if they choose specks, each person gets one dust speck. This was not meant to be ambiguous.)
As it happens, a perfect and truthful predictor has declared that you will choose torture iff you are alone.
What do you do?
How does your answer change if the predictor made the copies of you conditional on their prediction?
How does your answer change if, in addition to that, you're told you are the original?