John D. Rockefeller already seemed a perfect specimen of homo economicus. Even as a boy, he bought candy by the pound, divided it into small portions, then sold it at a tidy profit to his siblings. By age seven, encouraged by his mother, he was dropping gold, silver, and copper coins that he earned into a blue china bowl on the mantel. John’s first business coup came at age seven when he shadowed a turkey hen as it waddled off into the woods, raided its nest, and raised the chicks for sale.
