The men who invented Heresy, and the early origins of Jiu Jitsu and Kempo (part 1)

In the first episode we explore the development of the concept of heresy by two early christian teachers, Valentinus and Irenaeus. We then begin a multi-part series on the origins of Jiu Jitsu and Kempo, addressing some of the myths surrounding the samurai class in the process, as well as talking about some of the other, less famous, inhabitants of feudal Japan.