Animation of renaissance or medieval era man unscrewing the top of a skull and pulling out the brain. Various drawings and paintings depicting people performing brain surgery or trepanation throughout the ages. Illustrations and animations of scientists studying the human brain, the tools they used, etc. Creation of “human robots” by using electrical impulses to control thoughts. Montage of men wearing 3D glasses, soldiers marching in a regiment, a handful of pills, a drunk man passed on the sidewalk. Various close-ups and pans of a human brain.