The difference between fantasy and science fiction

The difference between fantasy and science fiction

The difference between the fantasy and science fiction genres hasn’t always been an issue, as the Science Fiction and Fantasy Writers of America points out. However, there are a few key differences in the genres that can help us to separate one type of book from the other in the ‘science fiction vs fantasy’ debate.

science fiction and fantasyWhy is it important to know whether your book is science fiction or fantasy? One of the most important reasons is for marketing purposes. Agents and publishers will want you to succinctly describe the genre your book fits into. In addition, if you want to write a book, you will likely find that the overall direction of your plot will vary based on whether you are using classic fantasy or science fiction themes and tropes.

Science fiction vs fantasy: Identifying characteristics

  • Science fiction deals with scenarios and technology that are possible or may be possible based on science. Some science fiction such as far-future space opera or time travel stories may seem implausible, but they are still not beyond the realm of scientific theory. On the other hand, fantasy general deals with supernatural and magical occurrences that have no basis in science.
  • Fantasy is an older genre of literature than science fiction; in fact, fantasy is arguably the oldest genre. If we look back at the earliest surviving stories from human civilisation such as the Sumerian Epic of Gilgamesh or the ancient Greek myths, we find stories of gods, monsters and magic. Science fiction is a relatively recent genre of the last century or so with origins going back only a few hundred years before that.
  • Both science fiction and fantasy require rules. Just because fantasy is not based on scientific facts or speculation doesn’t mean that anything can go in fantasy. Certain laws must govern a fantasy world as well; the difference is that in fantasy, the author makes up the rules.

Surprisingly, science fiction and fantasy cannot always be distinguished by settings or other elements. Many would argue that Anne McCaffrey’s Pern series is science fiction despite the existence of dragons while others say the Star Wars films are clearly fantasy despite the space setting.

Have a fantasy or science fiction story idea? Start writing a book and get feedback from the Now Novel writing community as you go.

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24 Replies to “The difference between fantasy and science fiction”

  1. It’s really fairly simple folks and I’ll put it in a nutshell: science fantasy makes the impossible, possible. Science fiction on the other hand, makes the improbable plausible. Granted there are gray areas between the two genres.

    1. Hi Sam, thank you for sharing that! It’s an interesting take (although maybe I’d add that science fiction or speculative fiction more broadly also makes the probable/likely actual?) For example, we have people like Elon Musk wanting to put chips in people’s brains, so a cyborg isn’t too far off of reality nowadays (i.e. whether or not it’s possible is an increasingly gray area too). Thank you for sharing your thoughts.

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