"There are possible minds in mind design space who have anti-Occamian and anti-Laplacian priors; they believe that simpler theories are less likely to be correct, and that the more often something happens, the less likely it is to happen again."

You've been making this point a lot lately. But I don't see any reason for "mind design space" to have that kind of symmetry. Why do you believe this? Could you elaborate on it at some point?