When I came across the Mathematical Fortune-Telling article (article in Russian) the first thing I remembered was psychohistory. When I studied in university theory of games was one of my favorite parts of mathematics and it is amazing to see it in action on such a scale.
When I first got familiar with the psychohistory through one of the books about the Foundations I was really impressed. It took me somewhat around two weeks to read the whole Foundation Series. I think I will take some time to take a deeper look at Bruce Bueno de Mesquita's research. And then probably reread the Foundation Series.