the utility maximizing choice
The critical question is, whose utility?
The Aumann theorem will not help here since the FAIs will start with different values and different priors.
Each AI tries to maximize their own utility, of course. When they consider merging, they make an estimate: how much of the original utility can I expect to get after we both self-modify to maximize the new utility function.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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