One big question — which I don’t think we can answer at the moment — is whether the main driver of this migration within Europe is cyclical or structural. The job opportunities in Europe are in the north — in Germany, Britain, Sweden and so on. For all sorts of reasons, including the impact of the euro, it has been a two-speed recovery. Thus southern and eastern Europeans have moved to take advantage of the greater opportunities elsewhere, as you would expect. If this is largely cyclical, as growth resumes in Italy, Spain and elsewhere — as it eventually will — the present tensions will ease. If, on the other hand, it is mainly structural, young people will continue to move out of what will increasingly literally become “old Europe”. That will make it, like Japan, older still.