People often talk about banning cryptocurrencies. There is a lot of debate about whether that’s a good or a bad idea. I’m here to make a different point: while laws can be drafted that ban cryptocurrencies, they are impossible to enforce. We're talking about protocols individual actors can use to coordinate themselves outside of any central authority. Regulation can stop these protocols from thriving, but never from surviving. My position with banning cryptocurrencies here is the same as...