As the number of people on the planet grows, regression to the mean at global scale becomes more and more necessary to do anything at global scale. Humans get

As the number of people on the planet grows, regression to the mean at global scale becomes more and more necessary to do anything at global scale. Humans get to not appeal to the lowest common denominator when they aren't in groups numbering in the billions. (... this is a fancy way of saying "There's a reason the jokes you'll tell your friends in the privacy of your own home you might not tell a stranger on the street").