The case for a progressive cryptocurrency

Digital cryptocurrencies had a wild ride in 2017. The massive run-up in bitcoin's price generated a mania that spilled over into lesser-known virtual currencies, sparking a larger debate over whether these alternative payment systems are at all valuable to society. I've argued that bitcoin itself isn't, but some constructive criticism is in order. If bitcoin is largely useless, then what would a useful cryptocurrency look like? We should start with how bitcoin went wrong. Steve Randy...