“The assembly of the innovation engine that propelled the Industrial Revolution becomes easier to see once we recognize how the psychology of premodern Europeans had been quietly evolving in the background for at least eight centuries. Of course, there are many economic and geographic factors that matter too, but if there’s a secret ingredient in the recipe for Europe’s collective brain, it’s the psychological package of individualism, analytic orientation, positive-sum thinking, and impersonal prosociality that had been simmering for centuries.”