It has been said that Silicon Valley, or the 50 or so square-mile area extending from San Francisco to the base of the peninsula, has overseen the creation of more wealth than any place in the history of mankind. It’s made people richer than the oil industry; it has created more money than the Gold Rush. Silicon chips, lines of code, and rectangular screens have even minted more wealth than religious wars. Wealthy societies, indeed, have their own complicated incentive structures and mores.