In this episode, You Have Used Me as a Fish Long Enough, Curtis takes a quick look over the mind control techniques of both Wilder Penfield and Ewen Cameron. The entire period covered is during the Cold War, when the CIA funded, almost exclusively, any science that was linked to the brain and the control of it. We are told that they felt the need to do this because the Soviets were believed to be deeply involved in this area of science themselves, but we later hear that they had given up their mind control experiments in the early days. What Curtis presents is a necessary set of experiments, because of the worries of the time, but many of these scientists were also well funded by the CIA because they were working on population control techniques.