IntroductionDeductive reasoning takes first an idea, second observations arising from this idea. Inductive reasoning takes first observations, second an idea that arises from these observations.One can think about creating fictional worlds in a way analogical to this. I’ve found this pattern to arise often in the case of creating worlds depicted in fiction. Just like deductive reasoning is idea-first and observation-second, deductive worldbuilding would be general-world-lore-first and story-r...