Economist Ken Rogoff: Cryptocurrencies will eventually be regulated and issued by the government

Business Insider's Sara Silverstein spoke with Ken Rogoff, former IMF chief economist and author of "The Curse of Cash," at the World Economic Forum about the use of cryptocurrencies and the possible regulatory challenges they will face. Following is a transcript of the interview.
Silverstein: Two years ago, you wrote a book "The Curse of Cash." And a lot of the premise of that is getting rid of big bills in large part to reduce the amount of tax evasion and criminal activity and a lot of p