In her vital and fascinating new book, "The Forgotten Man: A New History of the Great Depression," Amity Shlaes tells a story about national icon President Franklin Delano Roosevelt. Shortly after FDR took office, Shlaes explains, he began arbitrarily tinkering with the price of gold. "One day he would move the price up several cents; another, a few more," writes Shlaes. One particular morning, Shlaes relates, FDR informed his "brain trust" that he was considering raising the price of gold by 21 cents. His advisers asked why 21 cents was the appropriate figure. "It's a lucky number," stated Roosevelt, "because...
