[justicezyx]

Yup, I am reading Peter's historical dynamism, still light years away from the psychohistory definition, but it's on the direction and is a vast leap of the conventional history study. Note that well before Peter's work, there were many quantitative study of macro history trends. But I am an outsider, and not an expert, so do your research if interested. Starting from Peter and his works would be fruitful route (I find Peter's book give much better introduction to prior arts).