In equation form, the AI is maximising

for some constant , some unlikely event that the AI cannot affect, some set of relevant descriptors , and some utility . Since C is constant, this is exactly the same as maximising - the probability is irrelevant.

The whole setup described is simply a way to ensure that if is the likely set of worlds consistent with observations after , then

(we "know" that doesn't happen and that we end up in ),


(in the worlds it cares about, the AI behaves as if was incredibly unlikely to come about).

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