The Importance of Language in Sci-Fi and Fantasy Writing

The big question for me about alien languages, why would you make alien languages? In the first place. So you can do it as a sort of a thought experiment to imagine a species that I don't know, squid with extra tentacles and they have some sort of nine armed sign language from squid creatures on some foreign planet. 99 times out of 100 an alien is a stand-in for a particular conception of humanity. It's a foil for humanities foils. The author is playing with something that has to be people. And so truly unspeakable alien languages of no interest. Ah, well, sometimes though the sort of thought experiment,. Sure, I'm saying within fiction, no one