In the doctor case one doesn’t usually imagine there are countless other doctors in epistemically indistinguishable situations, as you have with BBs. Albert’s objection is that there’s no preferred measure in such a case. For a careful explication of this view see Adlam’s “Against Self-Location.”

I think the relevant data O_n is “all of my macroscopic data right now.” So any uncertainty about which observer I am with such data is just self-locating uncertainty. Hartle & Srednicki tried to add “and I’m in the relatively early universe,” but to me that’s inaccessible Gods-eye-view info.

Great choices!

Aww. Cats aren’t crazy but they do have brains the size of a walnut. Glad he is okay.

That's one of them!

About half right!

Don't think I could do both at the same time.

Teaching undergraduate quantum mechanics affects your brain in subtle ways. I just realized that my dreams last night included an extended discussion of where the factors of hbar go in various equations.

It occurs to me that we did violate Press’s Dictum, that the maximum number of new ideas in a paper should be one. Probably should have broken into multiple papers, but who has time for that.

Agree with this recommendation. I read the paper again and it seems good!

Hamilton is briefly mentioned in my upcoming book “Complexity and Emergence” — she programmed the computer simulations that inspired Edward Lorenz to found modern chaos theory.

Doesn't get much more transformational than this (if you're a mathematician). There will still be plenty for humans to do, but the nature of that work is going to be different.

Just like that: poof & gone. RIP *all* of NSF social, behavioral and economic research (including psyc & cogneuro). I’m speechless.