In the process of preparing to testify in a divorce case, Brian had to study one of the strangest books he had ever come across, where religion, mathematics, and the apocalypse intersect. This week, we look at how a religious cult of number worshipers on the Italian coast gave rise to modern science, mathematics, philosophy, and music. In the interim 2500 years, as we have increased our knowledge of the universe using mathematics, we have lost the ability to explain why math is so successful at describing nature. Guest voices include Brian Frye, Errol Morris, Monte Johnson, and Gideon Rosen.