You should strive to maximize utility of your pattern, averaged over both subjective probability (uncertainty) and squared amplitude of wave-function.
If you include the latter, then it all adds up to normalcy.
If you select a state of the MWI-world according to born rule (i.e. using squared amplitude of the wave-function), then this world-state will, with overwhelming probability, be compatible with causality, entropy increase over time, and a mostly classic history, involving natural selection yielding patterns that are good at maximizing their squared-amplitude-weighted spread, i.e. DNA and brains that care about squared-amplitude (even if they don't know it).
Of course this is a non-answer to your question. Also, we have not yet finished the necessary math to prove that this non-answer is internally consistent (we=mankind), but I think this is (a) plausible, (b) the gist of what EY wrote on the topic, and (c) definitely not an original insight by EY / the sequences.
See my reply to Oscar_Cunningham below; I'm not sure if Egan's law is followed exactly (it never is, otherwise you've only managed to make the same predictions as before, with a complexity penalty!)
If it's worth saying, but not worth its own post, then it goes here.
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