What is editing? What is good editing? Edge Codes educates and entertains viewers on the artistry and craft of this underappreciated but crucial fact of filmmaking by examining the history, art, and science of film editing through movie clips and interviews with eminent editors, directors, and film historians. The film explores great advances in the art with key innovators of the craft such as Thelma Schoonmaker, George Lucas, and Norman Jewison through intimate interviews and stunning movie clips emblematic of editing’s visceral power. In exploring the general principles of cinematic editing, the film uncovers “the visual language” of the motion picture—its vocabulary of shot and sequences; its grammar of image assembly; and its evolution as a living, changing, global language. Finally, as it discusses issues of media literacy and the impact of digital technology upon editing, Edge Codes brings to the fore the new disjunctive aesthetic that in many ways appears to have been inspired by this new technology and considers its impact on the future of editing.