There Are No Extraterrestrial Peacocks

Why humanoid aliens are pure fantasy

Mantis from Guardians of the Galaxy — a human with minimal modifications to make her look ‘alien’
Jadzia Dax from “Star Trek: Deep Space 9”
Christopher Johnson from “District 9”
Abbott and Costello from “Arrival”

Science-Fiction loves Humanoid Aliens

Convergent Evolution, Hybridisation, and Panspermia

Convergent evolution and vaguely similar shapes (
Aliens will have very different biochemistries and developmental systems. Hybrids are not possible (X-Files)
Directed panspermia cannot ‘make’ humans (Prometheus)

Universals and Parochials

Photo by vishu vishuma on Unsplash
Photo by Luis Quintero on Unsplash

Sexual Selection

Photo by Steve Harvey on Unsplash

Argument from statistics

Photo by Shot by Cerqueira on Unsplash

Scifi writer, roboticist, and game developer, 2x Quora Top Writer. I write about writing speculative fiction, computer graphics, AI, evolution, and programming.

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