The hosts review insights from Dr. Michael Egnor, a professor of neurosurgery at Stony Brook University and author of "The Immortal Mind." Egnor argues that while electrical stimulation of the brain can elicit movement, memory, and emotion, it can never elicit reason or free will. Based on a review of 200 years of medical literature on seizures, he concludes that these higher functions do not originate in the physical brain.