In his book, The Art, Craft and Business of Film and Television Writing, UCLA Screenwriting professor, Richard Walter, calls this appropriateness integration. Integration refers to the unique suitability of events arising from the synchronous cooperation of all other story elements.
Appropriate Actions in Appropriate Settings
In The Godfather, for example, a wealthy man with a particular love of racehorses, defies the mafia. How should the writer craft his punishment? There are any number of gruesome ways to effect retribution. Burn him alive in his own house. Cut him up into little pieces starting with his fingers. But are these the most integrated, the most unique ways, given the man’s background and setting?
In the end the writer found a particularly diabolical punishment for the defiant man. In an unforgettably horrifying scene he had him wake up in his bed with the bleeding head of his prize racehorse under his blankets. Not a morally justifiable act, but one that uniquely fits the defies-us-and-be-punished-where it-hurts-the-most code of the Cosa Nostra.
In War Games, the young protagonist, a computer hacker, is being held by the military in an underground chamber. How should he attempt to escape? Through the air-vent system? Faking a spasm to get a guard inside and hit him over the head with a paperweight? These actions lack a unique fit.
Instead, the computer nerd records, on a miniature tape recorder, the sound key made by the unlocking of the electronically-controlled door and plays it back later to escape. His solution is both ingenious and unique to his circumstances and expertise. It integrates, in a fitting way, elements previously laid out in the story.
Integrating character, action and setting in this way, then, is an effective way of producing memorable and believable scenes.
Integration refers to the skill in crafting character action in settings that are uniquely appropriate to the story.