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The mortgage crisis but because of it. >> this is standard practice on wall street. it's surprising to many out in america. goldman sachs went both ways. you can bet that something is going to go up and you can bet that something is going to go down. you can bet on practically anything on wall street and goldman from what we're learning bet both ways and net gaped because their bets against the housing market seemed to have covered and then some their bets in favor of the housing market. >> so then is there a chance that goldman sachs could have manipulated the market? >> i think that's one of...