Is your investment in that new Internet stock a sign of stock market savvy or an act of peculiarly American speculative folly? How has the psychology of investing changed - and not changed - over the last five hundred years? Edward Chancellor examines the nature of speculation - from medieval Europe to the Tulip mania of the 1630s to today's Internet stock craze. A contributing writer to "The Financial Times and The Economist", looks at both the psychological and economic forces that drive peopl...