“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.” - Anton Chekhov
I believe this to be true not only in theater, but in design.
If you have thoughts or questions about Chekhov's Gun, email me firstname.lastname@example.org—I'd love to hear from you!