"If you're a writer, you don't serve genres. Genres serve you. Like, if you're writing a science fiction story set on a spaceship, you don't have to have someone thrown out an airlock."

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The brightest minds in our field have been trying to find a definition of science fiction for these past seventy years. The short answer is, science fiction stories are given as possible, not necessarily here and now, but somewhere, sometime.

— Larry Niven