Purity is so hard to find. Everything is, in some way, tainted, even if you don't see it at first. This painful truth seems to have descended upon one of the purer minds in tech, that of Apple co-founder Steve Wozniak.

Speaking on Monday in New Delhi, India, at the Economic Times Global Business Summit, Woz explained that he was fascinated by the purity of cryptocurrency. "Bitcoin to me was a currency that was not manipulated by the governments. It is mathematical. It is pure. It can't be altered," he said. Ah, but it seems it can be stolen. "I had seven bitcoins stolen from me through fraud," he said.