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There are several techniques: Have a narrator voice explicitly stating the relevant differences. Take everything for granted and hint changes indirectly (e.g.: if your aliens have seven fingers d...
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Source: https://writers.stackexchange.com/a/31542 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
There are several techniques: - Have a narrator voice explicitly stating the relevant differences. - Take everything for granted and hint changes indirectly (e.g.: if your aliens have seven fingers describe one "wearing an inordinately expensive ring on his seventh finger") - Describe the world giving "hind-reasons" (e.g.: "He looked at the clock's fourteen hours, one for each finger, counting slowly the time remaining before..."). - Use analogies (e.g.: "the crab was scurrying sideways on his fourteen legs. It looked like two hands united at the wrist with the hind legs shorter as pinkies and the foremost raised like index fingers pointing toward ..."). In general you can either state what relevant or let the reader "discover" differences from descriptions.