Buried by the Wall Street Crash

Both of the world’s greatest economists, Irving Fisher and John Maynard Keynes, thought they could see into the future and make a killing on the stock market - and then both were wiped out by the Wall Street Crash. One died a pauper, the other millionaire. What does it take to bounce back from ruin? Oh... and UFOs. Read more about Tim's work at http://timharford.com/