I mean, it depends what you mean by science fiction and I’m certainly not keen to gatekeep about it, but I do feel it should have supernatural (as in, do not and have never existed in our world and is basically not possible with current science) science-based elements which are important to the plot. So Star Wars has a space station that can blow up a planet, psychic powers, and hyperspace - even if you transplanted it to 1930s Earth and took out hyperspace (so the Falcon is just a freight plane or something) the other elements are definitely supernatural.
But if the plot is just
I’m really not sure how it qualifies, you could set that in 1970s New York and nobody would bat an eyelid.
I agree that Capricorn One has very little science fiction either (the only possible element is how effective the conspiracy is, and that’s a thriller trope, not a sci-fi trope) and shouldn’t be on the list, by the way.
But if the plot is just
guy takes part in a high stakes gambling game where you have to murder the other players in order to progress and there’s no supernatural technology or elements, it’s just set in an icy post apocalyptic future
I agree that Capricorn One has very little science fiction either (the only possible element is how effective the conspiracy is, and that’s a thriller trope, not a sci-fi trope) and shouldn’t be on the list, by the way.







