If you try to do that, you get a paradox where, if A is not creating anyone, B is creating a new person and letting them lead a sad life, and C is creating a new person and letting them lead a happy life, then U(A) = U(B) < U(C) = U(A). You can't say that it's better for someone to be happy than sad, but both are equivalent to nonexistence.
Interesting. Do you have any idea why this results in a paradox, but not the corrigibility problem in general?
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