Why Our Cash Will Disappear. More than seven years after his global bestseller "This Time Is Different," Kenneth Rogoff returns with an even more explosive topic: the total abolition of cash. In 2014, Rogoff was the first economist to propose a cash ban as a possible solution for implementing negative interest rates and curbing crime. His ideas have already led the ECB to eliminate the 500-euro banknote and Germany to discuss a limit of 5,000 EUR for cash payments. In "The Curse of Cash," Rogoff, one of the most prominent and well-known economists in the world, outlines potential solutions to the seemingly intractable conflict between curtailing personal freedom and the lack of regulatory intervention options in financial policy.