The Daily Omnivore

Chekhov’s gun is a literary technique whereby an element is introduced early in the story, but its significance does not become clear until later in the narrative. The concept is named after Russian playwright Anton Chekhov, who mentioned several variants of the concept in letters. Chekhov himself makes use of this principle in ‘Uncle Vanya,’ in which a pistol is introduced early on as a seemingly irrelevant prop and, towards the end of the play, becomes much more important as Uncle Vanya, in a rage, grabs it and tries to commit homicide.

The phrase ‘Chekhov’s gun’ is often interpreted as a method of foreshadowing, but the concept can also be interpreted as meaning ‘do not include any unnecessary elements in a story.’ Failure to observe the rule of ‘Chekhov’s gun’ may be cited by critics when discussing plot holes. The opposite of Chekhov’s gun is a ‘red herring,’ a plot device that’s designed to divert attention.

A MacGuffin is a plot element that catches the viewers’ attention or drives the plot of a work of fiction. The defining aspect of a MacGuffin is that the major players in the story are (at least initially) willing to do and sacrifice almost anything to obtain it, regardless of what the MacGuffin actually is. In fact, the specific nature of the MacGuffin may be ambiguous, undefined, generic, left open to interpretation or otherwise completely unimportant to the plot. Common examples are money, victory, glory, survival, a source of power, or a potential threat, or it may simply be something entirely unexplained.

The MacGuffin is common in films, especially thrillers. Usually, though not always, the MacGuffin is the central focus of the film in the first act, and then declines in importance as the struggles and motivations of characters play out. It may come back into play at the climax of the story, but sometimes the MacGuffin is actually forgotten by the end of the film. The director and producer Alfred Hitchcock popularized both the term and the technique, with his 1935 film ‘The 39 Steps,’ an early example of the concept.

Retroactive continuity (often shortened to retcon) refers to the alteration of previously established facts in a literary work. Retcons may be carried out for a variety of reasons, such as to accommodate sequels or further derivative works in the same series, to reintroduce popular characters, to resolve chronological issues, to reboot a familiar series for modern audiences, or to simplify an excessively complex continuity structure.

Retcons are common in pulp fiction, especially comic books published by long-established houses such as DC, Marvel and leading manga publishers. The long history of popular titles and the plurality of writers who contribute stories can often create situations that demand clarification or revision of exposition. Retcons appear as well in soap operas, serial drama, movie sequels, professional wrestling, video games, radio series, and other kinds of serial fiction.