I've just started reading Matt Ridley's The Rational Optimist. So far, it is an excellent, through-provoking read. A key to Ridley's argument is that the innovation of exchange--the trading between two parties of separate items or services that both parties value--that led to mankind's dominance of the planet and the explosion of knowledge and technology.Ridley explains how exchange--or barter--is qualitatively different from reciprocity (an...
