A feature-length documentary that delves into the psychology of film editing - the mystery of how and why an edited movie so effortlessly makes sense. The illuminating work of film editor Walter Murch, scholar David Bordwell and a varied group of psychologists suggests that in cinema's earliest years, the basic film edits were shaped to the mechanisms of human perception. But in the remote mountains of Turkey, a budding researcher - and a group of people who have never seen films before - put this deepest of cinematic ideas to the test.