The “global financial crisis” got you stumped? Then check out radical economist Rick Wolff’s lucid, essential lecture on the origins of the present crisis. In “Capitalism Hits the Fan,” Prof. Wolff breaks it down in language that anyone can understand, which is more than the Treasury Secretary or any talking head on television can say. And, best of all, you can stream the entire lecture in “preview” format from the website. Do that, and then put a request into your local library to buy a copy.