It is a central principle of sound editing that people hear what they are conditioned to hear, not what they are actually hearing. The sound of rain in movies? Frying bacon. Car engines revving in a chase scene? It’s partly engines, but what gives it that visceral, gut-level grist is lion roars mixed in. To be excellent, a sound editor needs not just a sharp, trained ear, but also a gift for imagining what a sound could do, what someone else might hear.