At one point in early 1998, Larry Summers called Brooksley Born – the last person who really tried to rein in the dangers posed by derivatives (and it was a much lower level of danger then compared with now). Summers reportedly said, “I have thirteen bankers in my office, and they say if you go forward with this you will cause the worst financial crisis since World War II.”

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PBS used the same quote in one of their documentaries about the financial system. So it is legit I think.