When the Goldman Sachs saleswoman called Mike Burry and told him that her firm would be happy to sell him credit default swaps in $100 million chunks, Burry guessed, rightly, that Goldman wasn't ultimately on the other side of his bets. Goldman would never be so stupid as to make huge naked bets that millions of insolvent Americans would repay their home loans. He didn't know who, or why, or how much, but he knew that some giant corporate entity with a triple-A rating was out there selling credit default swaps on subprime mortgage bonds. Only a triple-A-rated corporation could assume such risk, no money down, and no questions asked. Burry was right about this, too, but it would be three years before he knew it. The party on the other side of his bet against subprime mortgage bonds was the triple-A-rated insurance company AIG--American International Group, Inc.