CHEKHOVSGUN
Chekhov's gun
Chekhov's gun is a dramatic principle requiring that every element in a narrative be necessary and irreplaceable, and that everything else be removed. Stated by Anton Chekhov, "Remove everything that has no relevance to the story. If you say in the first chapter that there is a rifle hanging on the wall, in the second or third chapter it absolutely must go off. If it's not going to be fired, it shouldn't be hanging there."__NOTOC__The above text is a snippet from Wikipedia: Chekhov's gun
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