Sensible people have long recognized the incongruity of the claim that Christopher Columbus discovered America, already home to perhaps a million souls at the time of his arrival. It is less widely recalled that Columbus did not mean to discover anything. He thought he knew where he was going, and, famously, did not quite realize he had not gotten there. His motives, and that of his royal patrons, were more commercial than scientific. Columbus set out not to uncover new lands but to demonstrate the feasibility of transoceanic travel. It was this achievement, and not his accidental encounter with an unsuspected continent, that proved transformative. Three centuries later, Adam Smith, the evangelist of modern capitalism, would declare t...