jsteinhardt comments on Against utility functions - Less Wrong Discussion
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On the one hand, you are correct regarding philosophy for humans: we do ethics and meta-ethics to reduce our uncertainty about our utility functions, not as a kind of game-tree planning based on already knowing those functions.
On the other hand, the Von-Neumann-Morgenstern Theorem says blah blah blah blah.
On the third hand, if you have a mathematical structure we can use to make no-Dutch-book decisions that better models the kinds of uncertainty we deal with as embodied human beings in real life, I'm all ears.
Why do you care so much about Dutch booking relative to the myriad other considerations one might care about?
Because it's a desideratum indicating that my preferences contain or don't contain an unconditional and internal contradiction, something that would screw me over eventually no matter what possible world I land in.
ITYM a desideratum.