The universe almost certainly teems with life — but the idea that any of it resembles a human being may be the most provincial assumption our species has ever made
The Costume Problem
Every alien in the history of Hollywood has something in common with every other alien in the history of Hollywood: they were designed by a human being. Two eyes, bilateral symmetry, something approximating a face, limbs that suggest arms and legs, a body plan that a human costume designer could render in latex and makeup. Even our most imaginative attempts at the genuinely alien — the creature in Alien, the heptapods in Arrival, the monolith in 2001 — betray the cognitive limits of the minds that created them. We reach for the unfamiliar and end up producing variations on ourselves.
This isn’t a failure of imagination. It’s a failure of experience. Humans have exactly one data point for what a technologically sophisticated, self-aware species looks like: us. And we have made the oldest mistake in the history of bad reasoning — we have assumed that our single data point is representative of the whole.
It isn’t. It couldn’t be. The physics, chemistry, biology, and evolutionary pressures that produced a five-foot-ten bipedal primate with forward-facing eyes and opposable thumbs are so specific, so contingent, so dependent on countless years of particular conditions on one particular rock orbiting one particular star, that the probability of those same pressures producing anything remotely similar elsewhere in the universe isn’t low. It’s essentially zero.
Continue reading… “Why Aliens Will Never Look Like Us”