Bitcoin's 'bubble' is unlike anything we've seen recently

Financial bubbles are often fully recognizable only after they burst — when it's too late. But the speed of bitcoin's rise has already convinced many that its price is well disconnected from its underlying value.
Bitcoin's price has rocketed 646% in very volatile trading this year as its demand and popularity has grown. As the chart above from Bespoke Investment Group illustrates, the rally has been faster than most other severe bubbles in recent history, inc