> One year, Yale University economist Robert Shiller, who'd never gambled in his life, found himself at a casino there. He says that was because Wharton economi

> One year, Yale University economist Robert Shiller, who'd never gambled in his life, found himself at a casino there. He says that was because Wharton economist Jeremy Siegel realized that by using coupons offered to conventioneers, they could take opposing bets at the craps table with a 35 out of 36 chance of winning $12.50 each. Over two nights, Mr. Shiller netted $87.50.