this post was submitted on 28 Nov 2024
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Dr Angela Collier has done a video essay on why aliens won't be silicon-based. She's not a biologist but an astrophysicist but the focus of her video is mostly about how carbon chemistry and cosmic abundance is better suited to producing life.
Maybe there's a rock out there made, by complete chance, in such huge proportion of silicon that it becomes more viable, I don't give a shit. It was just an aside anyway, pick another based on the same principle if you like. Why an obligate biped? Why this size? Why not a flying creature? Why not a rotationally-symetrical monstrosity? Why not an intelligent species that physically couldn't really be engineers but happen to live on the same planet as creatures who can? Or who just get contacted by outside life that can? I'm a dipshit who mostly prefers pulp and cosmic horror (read: fantasy) science fiction, so I'm sure someone who knows more could come up with more and better prompts.