If you really like it, please have a look at http://ngm.nationalgeographic.com/print/2009/12/hadza/finkel.... This has taught me more about hacking and life than most books I ever read. I believe pg was on the right track with the "Hackers & Painters" thing, but we are not only makers, we are actually the descendants of the original pre-historical hunters.
(NB I've always been fascinated by prehistory and how our ancestors experiences shaped our own behaviour).