I have seen what seem to me to be massive changes over my life (60 years) in Canadian society, but that is from a personal perspective. I do think that sometimes it is possible to see big changes even from the perspective of 200 or 300 years. For example, 200 or 300 years from now, people will probably see a vast difference between the China of 1940 and the China of 2010, but possibly not between the Canada of 1940 and the Canada of 2010.
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