In the previous post, I described two survival systems: one oriented toward information, one toward social cohesion. The autistic information drive produces friction: the café stranger, the colleague with links when you needed a hug. But it also produces something else.
Picture a tribal council. The leader has spoken. The plan is agreed. Everyone around the fire has nodded. One person says: "But the herd tracks go the other way."
Silence. Eyes. The weight of having contradicted the chief in front of everyone.
The tracks went the other way.
The puzzle
Autism has strong genetic components — spread on many genes, with expression influenced by environmental factors. It runs in families, it clusters, it transmits. It tends to isolate affected individuals, and yet it persists at consistent rates across all human populations, across cultures, and most likely across centuries. This is the kind of pattern that usually means something.
The conventional explanations for its persistence focus on the individual level: genetic linkage to advantageous traits, cognitive advantages in pattern recognition and systemizing, the so-called "geek gene" hypothesis. These are real and worth taking seriously. But they explain individual fitness. What if the answer isn't at the individual level at all, what if the whole group benefited enough from the presence of autistic members that it played in favor of the group's survival?
The group-level argument
A group where everyone runs the social-harmony calculation before speaking has a specific, predictable blind spot. Information gets suppressed to preserve group comfort. Errors go uncorrected because correcting them would embarrass someone senior. The plan with the structural flaw gets executed because no one wanted to be the one who said so in front of the chief.
This is not a theoretical failure mode. It has a name —groupthink— with documented consequences. And it operates precisely through the mechanism that makes neurotypical social cohesion work so well in stable conditions: the instinct to read the room, preserve relationships, avoid disruption.
The autistic information drive doesn't have that brake. Not because of courage or contrarianism, but because the system that would weigh social cost against information value simply doesn't run first. The information is there, it needs to be shared, and the authority of the person in front of you is not a relevant variable.
The person around the fire says the tracks go the other way. Not to challenge the chief. Not to make a point. Because the tracks go the other way and that is the only thing that matters: to speak the facts.
The genetic angle
You don't need to resolve the group selection debate in evolutionary biology to find this argument useful. There's a simpler version.
Autism is heritable. Which means some groups, by genetic chance, would have had more of this profile and some would have had less — either by the higher presence of some autism-related genes, or by the presence of more such biological markers in the population. A group that happened to lack it entirely would have been exposed to the groupthink failure mode with no one to interrupt it. Information suppressed. Errors uncorrected. The tracks followed in the wrong direction.
Over generations, over crises, over the moments when accuracy mattered more than social harmony, that asymmetry would have had consequences.
This isn't a claim that autistic individuals were selected for. It's an observation that groups containing the profile were more robust against a specific and recurring failure mode that the majority profile generates in itself.
What this changes
The usual framing of autism and society runs in one direction: here is a profile that generates difficulties, how do we accommodate it. That framing isn't wrong, but it's incomplete.
The profile that makes someone say the tracks go the other way, correct the stranger's restaurant recommendation, flag the error in the meeting when everyone has moved on — that profile is costly in stable, low-stakes social conditions. It produces exactly the friction described in the previous post. But a group running only the social cohesion system is vulnerable in a specific direction, and has been throughout human history.
The autistic people who drove everyone slightly mad in ordinary times may have been the ones who said the thing that needed saying when it mattered most.
A note on epistemic honesty
This is a hypothesis. The genetic heritability of autism is established. The groupthink failure mode is documented. The observation that cross-neurotype groups might be more robust is plausible and consistent with broader neurodiversity research. But the specific claim — that autism persists in part because groups containing it outperformed groups that didn't — is an original assembly of solid components, not a finding from the literature.
I'm offering it as a frame worth considering, not a conclusion worth defending. If you work in evolutionary biology or behavioral genetics and think I'm wrong, I'd genuinely like to know why.
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