I agree that you can give different weights to different Dutch book/money pump arguments. I do think that if you commit 100% to complete preferences over all probability distributions over outcomes and invulnerability to Dutch books/money pumps, then expected utility maximization over each individual decision with an unbounded utility function is ruled out.
As you mention, one way to avoid this St. Petersburg Dutch book/money pump is to just commit to sticking with A, if A>B ex ante, and regardless of the actual outcome of A (+ some other conditions, e.g. A and B both have finite value under all outcomes, and A has infinite expected value), but switching to C under certain other conditions.
You may have similar commitment moves for person-affecting views, although you might find them all less satisfying. You could commit to refusing one of the 3 types of trades in the OP, or doing so under specific conditions, or just never completing the last step in any Dutch book, even if you’d know you’d want to. I think those with person-affecting views should usually refuse moves like trade 1, if they think they’re not too unlikely to make moves like trade 2 after, but this is messier, and depends on your distributions over what options will become available in the future depending on your decisions. The above commitments for St. Petersburg-like lotteries don’t depend on what options will be available in the future or your distributions over them.
I agree that you can give different weights to different Dutch book/money pump arguments. I do think that if you commit 100% to complete preferences over all probability distributions over outcomes and invulnerability to Dutch books/money pumps, then expected utility maximization over each individual decision with an unbounded utility function is ruled out.
As you mention, one way to avoid this St. Petersburg Dutch book/money pump is to just commit to sticking with A, if A>B ex ante, and regardless of the actual outcome of A (+ some other conditions, e.g. A and B both have finite value under all outcomes, and A has infinite expected value), but switching to C under certain other conditions.
You may have similar commitment moves for person-affecting views, although you might find them all less satisfying. You could commit to refusing one of the 3 types of trades in the OP, or doing so under specific conditions, or just never completing the last step in any Dutch book, even if you’d know you’d want to. I think those with person-affecting views should usually refuse moves like trade 1, if they think they’re not too unlikely to make moves like trade 2 after, but this is messier, and depends on your distributions over what options will become available in the future depending on your decisions. The above commitments for St. Petersburg-like lotteries don’t depend on what options will be available in the future or your distributions over them.