Unknown, don’t say “our choice of worlds”. Our decisions don’t determine which world we’re in (there is no preexisting “you” that goes into one world but not another), they determine the relative measures of the worlds, so the average is not fixed (or, rather, not fixed independently of our actions—this is really just the old argument over determinism).
I would also like to hear Eliezer’s answer to your final question.
Unknown, don’t say “our choice of worlds”. Our decisions don’t determine which world we’re in (there is no preexisting “you” that goes into one world but not another), they determine the relative measures of the worlds, so the average is not fixed (or, rather, not fixed independently of our actions—this is really just the old argument over determinism).
I would also like to hear Eliezer’s answer to your final question.