Newsnight Economics Editor Paul Mason interviews the controversial economist Steve Keen before an audience at the London School of Economics.
Prof Keen was one of a small number of economists who predicted there would be a major financial crisis before the 2008 crash.
He argues that if we keep the "parasitic banking sector" alive then the economy will die, and says that conventional economics provides an unwitting cover for "the greatest ponzi schemes in history".
Producer: Kavita Puri.