HOLLYWOOD, California—In his classic book on film editing, In the Blink of an Eye, Walter Murch writes about the violence of the cut. In an instant, everything you see onscreen is erased and replaced with something else. Often the scene jumps to another place or time. “Nothing in our day-to-day experience seems to prepare us for such a thing,” Murch writes. And yet, in movies this happens all the time, and we accept it without giving it a second thought.