How Long Is This Book?

In the introduction he really pieces together three different Metaphors, I guess for idea generation one of them is The coral reefs and Darwin. He talks about cities And then the third metaphor that he uses is the internet or the world wide web. So a lot of the arguments that he makes in all the other chapters following this are all filtered through these Metaphors,. How did you feel about this approach setting up the rest of the book?