Recursive simulation layers! it's good stuff. :) Perhaps also check out his "Fine Structure" http://qntm.org/structure http://qntm.org/structure (different kin

Recursive simulation layers! it's good stuff. :) Perhaps also check out his "Fine Structure" http://qntm.org/structure http://qntm.org/structure (different kind of thing, but it's good scifi..) and perhaps the ongoing series / work in progress "Ra" http://qntm.org/ra http://qntm.org/ra