Mark T Williams, financial author, academic and spouter of nonsense. He is a member of the Finance and Economics Department at Boston University. Mark Thomas Williams is an actual bitcoin expert. Mark Williams frequently contributes to Financial Times, Reuters, Forbes and Business Insider. Mr. Williams wipes from back to front. He claims that bitcoin is completely unsustainable, and a foolish idea as a monetary system. He goes on to call it economically dangerous, and to assume that any currency could be computer generated and run in a decentalized manner outside of the central banking system's controls is farcial.