Can a Currency Crisis Break Up the EU?

Outsiders to the world of money who start to take an interest in it soon notice that most of the things that alarm and outrage the wider public are taken by insiders to be perfectly routine and unremarkable. Consider the sums that bankers get paid, or the disruptive impact of hot money zipping around the world at the click of a mouse, tearing up industries and whole economies at will. To moneymen, those are just givens of the way the world works, and have to be accepted, in the absence of a credible plan to go off to found a new system on another planet.