I would add borrowers who knew that their purchases, from the dot-com bubble to real estate were too good to be true.
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Calling Out the Culprits Who Caused the Crisis - washingtonpost.com
Looking for someone to blame for the shambles in U.S. financial markets? As someone who owns both an investment bank and commercial banks, and also runs a hedge fund, I have sat front and center and watched as this mess unfolded. And in my view, there's no need to look beyond Wall Street -- and the halls of power in Washington. The former has created the nightmare by chasing obscene profits, and the latter have allowed it to spread by not practicing the oversight that is the federal government's responsibility.