This is a very interesting study, but I really wonder if cultural change from 1940 to 2000 is predictive of the future. I’m not sure the concept of a national/generational cohort is as useful going forward as ideas and norms are 1. Distributed globally and across age groups through online discourse, and 2. More completely manufactured and controlled by more or less corporate interests. But, maybe the most sensitive issues are still more immune to these influences?