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Since I read Portfolio for my business news, I never know what the hell is going on in business. Thankfully there's this slideshow on Google Docs, which explains the origins of the subprime mortgage collapse (putting the blame on pretty much everyone working in a financial institution). Someone find this guy so he can explain brokered conventions. [UPDATE: If you still don't get the subprime crisis, the commenter ADismalScience further explains it in the thread below, here, here and here.]