"Well, I have a message for the Scots: Be afraid, be very afraid. The risks of going it alone are huge. You may think that Scotland can become another Canada, but it's all too likely that it would end up becoming Spain without the sunshine.
Comparing Scotland with Canada seems, at first, pretty reasonable. After all, Canada, like Scotland, is a relatively small economy that does most of its trade with a much larger neighbor. Also like Scotland, it is politically to the left of that giant neighbor. And what the Canadian example shows is that this can work. Canada is prosperous, economically stable (although I worry about high household debt and what looks like a major housing bubble) and has successfully pursued policies well to the left of those south of the border: single-payer health insurance, more generous aid to the poor, higher overall taxation."
http://www.sunherald.com/2014/09/16/5803335/paul-krugman-the-scots-should.html