TimFreeman comments on Morality is not about willpower - Less Wrong
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A fallacy is a false statement. (Not all false statements are fallacies; a fallacy must also be plausible enough that someone is at risk of being deceived by it, but that doesn't matter here.) "Attaching a utility function post hoc to what the system does and does not do" is an activity. It is not a statement, so it cannot be false, and it cannot be a fallacy. You'll have to try again if you want to make sense here.
It a function that maps world-states to utilities, so it is a utility function. You'll have to try again if you want to make sense here too.
We're nearly at the point where it's not worth my while to listen to you because you don't speak carefully enough. Can you do something to improve, please? Perhaps get a friend to review your posts, or write things one day and reread them the next before posting, or simply make an effort not to say things that are obviously false.
Not a pattern of an invalid argument?
Tim, lessdazed has just spoken for me.
As lessdazed has said, that is simply not what the word "fallacy" means. Neither is a utility function, in the sense of VNM, merely a function from world states to numbers; it is a function from lotteries over outcomes to numbers that satisfies their axioms. The TSUF does not satisfy those axioms. No function whose range includes 0, 1, and nothing in between can satisfy the VNM axioms. The range of a VNM utility function must be an interval of real numbers.
Ignored.
Perhaps you are not reading carefully enough.