Science fiction (English: Science fiction; often referred to as "sci-fi" or "SF") is a genre of science fiction fiction. It is also known as "the literature of ideas" and often explores or predicts the potential consequences of innovations in science, society, and technology.

Science fiction can be rooted in ancient culture, have connections to fantasy worlds, have elements of horror and superheroes, and include many other subgenres. Because of that connection, its exact definition has long been disputed among authors, critics, and scholars. Many people also easily confuse science fiction with other genres, especially fantasy.

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