A short-distance time-traveller between 1912 and 2012 might be perplexed and astonished, but he would not be lost. That period is now coming to an end. I suspect that anyone in Britain, travelling between 2012 and 2112 would be unable to believe that he was in the same place. What is the most significant single fact in the Census? I do not think there is one. Several are shocking or disturbing, if you are not fond of change, and delightful if you are.