Fantastic fiction loves contrasts made explicit: Eloi and Morlocks, orcs and elves, and above all humans battling vampires, Martians or robots. Small wonder that Claude Lévi-Strauss specifically invoked science fiction for his theory of ‘binary opposition’.
Sometimes these tensions are in the mise-en-scene — not just Earth vs. outer space, but settings — Lilliput and Brobdingnag, say — which try to make themes concrete.

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