Bloomberg Opinion columnist Barry Ritholtz interviews Richard Sylla, professor emeritus of economics at New York University's Stern School of Business. Sylla is the author or co-author of several books, including “A History of Interest Rates.” He notes that rates in recent years are “the lowest in history, from the Code of Hammurabi to Babylon Civilization, Greek and Roman Civilization, the Middle Ages, Renaissance, right up until the present.”