Outside Source

How to explain bitcoin? As I said a couple of weeks ago, it’s hard to dismiss the digital currency as a classic investment bubble because — unlike any of the other historical manias which have seen similarly extreme gains in price — it has formed a series of bubbles, which have burst and then reinflated. Bubbles aren’t supposed to do this: They are booms grown so large that they cannot gently deflate and must burst, never to return.