In April 2013, I went to a lecture called “Bitcoin: Currency, Commodity, or Con?” It was early days for bitcoin. I expected the room to be full of tech nerds, and people like me, who study the underground economy (and maybe a few criminals). I was wrong. The room was FULL of high-ranking financial executives. The sort of people who are too busy to go to lectures, it may have been one of the most high-powered gatherings I’ve ever been to. They were nervous.