'Another Great Depression is all but inevitable' - that's the view of Steve Keen. He's been called the 'Merchant of Gloom', but he's one of the few economists to have predicted the global financial crisis. While he used to be a lone voice in challenging the economic consensus, more and more people are now listening to him. His way of avoiding depression? Write off the debt, bankrupt the banks, nationalise the financial system, and start all over again.