Thanks for mentioning this book. I didn't know he wrote this. I just bought one and it completes my collection of all Smolin books. I like the part where he mentioned: "* the fundamental theory will not be quantum mechanical.. but quantum mechanics will emerge in the case of small subsystem. * the fundamental theory will not exist in space, but space will be emergent in some eras of the universe." Do you know of authors or papers where they explored the "dna of physical law" as you put it? Where there is perhaps some idea of elementals that embody certain forces of nature... this is the truly radical theory.. smolin stuff is just not radical or powerful enough to explain all of nature.