I understood the first two-fifths of the book (hence two out of five stars), but completely lost him from that point forward. I suppose I grasp the cosmos and quantum theories much better than I do elevated theoretical mathematical concepts. No matter, wanting to know this stuff is almost as joyous an experience as knowing this stuff. One day it'll stick. The author does a poor job, I have to say, of successfully explaining anything to an uninitiated layman. He explained statistics in a much more teacherly manner in his 200% book. My mind expanded anyway and I enjoyed. Not recommended for non-dorks.