Herr Krugman back in July:
First things first: given all the bad-mouthing the French receive, you may be surprised that I describe their society as "productive." Yet according to the Organization for Economic Cooperation and Development, productivity in France - G.D.P. per hour worked - is actually a bit higher than in the United States.
From the Wall Street Journal today:
It may be difficult nowadays to get people in what the French call the Hexagon to work on Friday afternoons, but not to riot, at least not in the "sensitive" quartiers that surround most towns and cities. The productivity of the rioters has been increasing rapidly of late, and France looks like it will be breaking its record for burnt-out cars: 1,295 on Saturday night alone and 750 on Friday night, 500 the night before, and 300 the night before that. This year so far, the tally is 29,000. If the trend of the last few days continues, geometric progression being what it is, it won't be long before the rioters will have to go to Germany or the Low Countries to express their social conscience in a practical way.