Binary opposition theory proposes that meaning arises from fundamental pairs of opposites in language and thought. Lévi-Strauss believed myths were structured by binary oppositions like good vs evil, and that resolving one opposition created an illusion of resolving the original. In films, binary oppositions like hero vs villain provide the basis for plots and create a sense of balance. Common examples of binary opposites used in stories include rich vs poor, human vs supernatural, and young vs old.