In the early 20th century, Max Weber argued that Protestantism created wealth. Finally, there are data to prove if he was right. All it took were some missionary experiments in the Philippines and a clever map-matching trick that goes back to 16th-century Germany. And: the human foot is an evolutionary masterpiece, far more functional than we give it credit for. So why do we encase it in “a coffin” (as one foot scholar calls it) that stymies so much of its ability — and may create more problems than it solves?