In 2008, Bitcoin was mysteriously introduced to the world in an obscure, technical paper written under the pseudonym Satoshi Nakamoto. By late 2013, the financial press was filled with reportage on Bitcoin and its dramatic price increase.Well ahead of Satoshi Nakamoto, Nobelist Milton Friedman, champion of free market economics and noted expert on money and banking, anticipated the coming of digital currencies, and foresaw the potential impacts that they would have on finance and economics.In a 1999 interview, Prof. Friedman concluded: I think that the Internet is going to be one of the major forces for reducing the role...