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PhilGoetz comments on Exterminating life is rational - Less Wrong
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Yeesh. I'm changing my mind again tonight. My only excuse is that I'm sick, so I'm not thinking as straight as I might.
I was originally thinking that Vladimir Nesov's reformulation showed that I would always accept Omega's wager. But now I see that at some point U1+3*(U1-U0) must exceed any upper bound (assuming I survive that long).
Given U1 (utility of refusing initial wager), U0 (utility of death), U_max, and U_n (utility of refusing wager n assuming you survive that long), it might be possible that there is a sequence of wagers that (i) offer positive expected utility at each step; (ii) asymptotically approach the upper bound if you survive; and (iii) have a probability of survival approaching zero. I confess I'm in no state to cope with the math necessary to give such a sequence or disprove its existence.
How would it help if this sequence existed?
If the sequence exists, then the paradox* persists even in the face of bounded utility functions. (Or possibly it already persists, as Vladimir Nesov argued and you agreed, but my cold-virus-addled wits aren't sharp enough to see it.)
* The paradox is that each wager has positive expected utility, but accepting all wagers leads to death almost surely.
Ah. So you don't want the sequence to exist.
In the sense that if it exists, then it's a bullet I will bite.