I'm probably completely confused, but is there any reason that Greg Egan's rebuttal* to Dust Theory does not also apply to any Big World scenario?
*Q5
I think the validity of Dust Theory and Big World scenarios depends on how much probability they assign to worlds like ours. For now we don't have a good estimate of that probability. Egan assumes that it should be low, but I don't know how to check that.
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