What Makes a Human Worth Protecting?

On kind membership, potential, and the collapse of civilizational superiority

There’s a question that sits beneath most arguments about how we treat animals, how we treat the vulnerable, and how societies have historically justified treating each other: what, exactly, grounds the special moral status of a human being?

The intuitive answer — that humans are smarter, more capable, more morally complex — runs into problems almost immediately. What about the comatose patient? The infant? And more uncomfortably: what about the tribal community that has lived in the same way for thousands of years, with no written philosophy, no systematic theology, no recorded science?

Colonial ideologies thought they had an answer. As do moral vegetarians. And communists and the Nazis. They disagree about almost everything — but each grounds moral worth in something measurable: productive output, demonstrated capacity, the ability to suffer. And each, followed to its end, licenses treating some beings as worth less than they are — or, in the vegetarian’s case, granting some more standing than they warrant. They were all wrong, and they were wrong in the same place.

The Static Cow

What is the morally relevant difference between killing a cow and killing a person?

One answer: potential. A cow today is doing roughly what a cow was doing three thousand years ago. It grazes, it is herded, it dies. Its telos — Aristotle’s term for the characteristic end or activity toward which a thing is by nature oriented — is fully expressed by a healthy cow living a cow’s life. And it is not only this cow that has arrived at it: the very same telos has already been completely actualized by millions of cows before it, and will be by millions after. There is nothing in this animal that the kind has not already realized, exhaustively, countless times over. When you kill it, you’re not cutting short a trajectory, and you’re not extinguishing anything the world hasn’t already seen fully expressed. You’re ending something that had, in the relevant sense, already arrived.

A human being is different in kind, not just degree. Human cognition is constitutively restless. It models the world, generates questions the model can’t answer, and is — by its nature — oriented toward exceeding its current limits. This isn’t a cultural achievement layered on top of a neutral substrate. It’s the substrate. Any mind that genuinely models its environment encounters its own incompleteness and is pushed forward by it. This has a precise analogue in Gödel’s incompleteness theorems: any formal system powerful enough to describe basic arithmetic necessarily generates true statements it cannot prove from within its own axioms. The system can always be extended — and the extended system generates new unprovable truths in turn. A sufficiently rich mind is a Gödelian system running in real time. It always outruns its current formalization, because the very act of modeling the world produces questions the current model can’t answer from inside itself. Curiosity isn’t an add-on to intelligence; it’s intrinsic to what intelligence is.

This is why a truly static intelligent species — a “talking cow,” intelligent but with no drive toward growth or development — is probably not just empirically unlikely but conceptually incoherent. Static intelligence is close to a contradiction in terms. A species that developed genuine cognition and then simply stopped would require some continuous external suppression of what intelligence naturally does. Left to itself, it pushes.

Kind Membership

What matters morally is not what any individual human has achieved, but what kind of thing a human is. Humans belong to a kind whose defining characteristic is open-ended rational and moral potential. Every member of that kind inherits the moral status of the kind — not because of what they personally can do, but because of what they are.

A comatose patient is still a human the way a wingless bird is still a bird. The kind-membership carries normative weight independent of current capacity. The potential is present as a feature of what the thing is, not as a prediction about what it will do.

People can walk. Someone who can’t is still fully a person — he has the “specialness” of being one of the walkers, even if, for particular reasons, he can’t. This is true of physical capacities, and it is equally true of the deeper metaphysical ones. A person doesn’t stop being fully human because, in them personally, some human capacity doesn’t present.

Viktor Frankl — writing from the far end of what humans can do to each other — made a related point. He argued that if even a single human being had demonstrated the capacity for genuine selflessness toward others, that established it as a human capacity. Not a statistical average, not the common case — a demonstrated possibility belonging to the kind. The highest achievement of any member sets the ceiling for the kind, and every member inhabits that ceiling as their nature.

The Tribal Test

The sharpest challenge isn’t the coma patient. It’s the isolated society that has lived in stable continuity for an almost unimaginable span of time.

When the British landed at Port Jackson in 1788, they encountered the Aboriginal peoples of Australia — who had been living on the continent, in largely unbroken cultural continuity, for something on the order of fifty to sixty thousand years. No writing. No accumulated natural philosophy in the European sense. Hunting, gathering, oral tradition, religious life organized around the Dreaming. From the colonist’s vantage point, here was a people who had been doing essentially the same thing since before the last Ice Age, while Europe had gone from cave paintings to Newton.

Colonial ideology essentially argued: these people have not demonstrated the outputs of civilization, therefore they occupy a lower position on a developmental scale. This is monstrous, and it’s also philosophically confused.

The confusion is between actualization and kind-membership. Humans who have done philosophy aren’t more human than those who haven’t. The fact that any human has done philosophy elevates the kind — and every member of the kind inherits that ceiling. The Aboriginal Australian who never wrote a word of theology is fully a member of the kind whose nature includes that possibility. The potential is latent, not absent.

We know this empirically. People from such communities, given access to accumulated human knowledge, absolutely do engage with it — extend it, contribute to it, find it natural. The speed of this uptake is itself evidence that the telos is real and universal. It was always there.

The colonial application of something like a potential-based argument was actually inverting it — evaluating individuals and groups by their current measurable outputs rather than by their nature. And that move turns out to be demonstrably wrong, for a reason that has nothing to do with sentiment.

The Imperialist’s Mirror

The civilizational superiority argument has a deeper problem, and it comes from inside.

The Englishman who looked down on tribal peoples in the nineteenth century had to explain what he personally had contributed versus what he had simply inherited. Newtonian mechanics, germ theory, parliamentary governance, the printing press — he produced none of it. He was a beneficiary, riding on the achievements of a very small number of exceptional minds, many of whom were treated as eccentric or dangerous by their own contemporaries.¹

The honest accounting reveals that in every society, at every level of technological development, the vast majority of people are passengers. The differential between an English banker in 1850 and an Amazonian hunter-gatherer is almost entirely environmental and historical — a matter of what culture each happened to be born into — not a reflection of intrinsic human worth or individual actualization.

If the metric were individual contribution to human knowledge and development, most of us, across all civilizations, score approximately the same: close to zero. The sophisticated society was often more dependent on inherited genius, and less self-sufficient, than the “primitive” one it looked down on. The Roman looking down at barbarians was living off Greek philosophy he didn’t produce. The Victorian was living off a scientific revolution generated by a handful of minds from the previous two centuries.

Even on its own terms, then, the imperialist position is incoherent. To sustain the superiority argument, you would have to look down at yourself with the same judgment — and at almost everyone around you.

Kind-membership isn’t just a concession to cover edge cases. It’s the only way to ground human dignity coherently at all. The moment you shift to individual actualization as the standard, you’ve opened a door that doesn’t close cleanly anywhere. You get gradations, and gradations invite exactly the logic you were trying to avoid.

Kant saw this, which is why his formulation was absolute: rational nature commands respect — not rational achievement, not civilizational output, not the measurable actualization of any particular capacity.² What a thing is, not what it has done.

Where Does That Leave Us?

Human dignity is grounded in kind-membership in a kind whose nature is constitutively oriented toward self-transcendence. The telos is real, universal, and present in every member regardless of actualization. It is established not by the average or the common case but by the highest demonstrated possibility — which belongs to the kind, and therefore to everyone in it.

This handles the animal question: killing a cow doesn’t thwart a trajectory, because that trajectory isn’t part of what a cow is. It handles the vulnerability cases: the comatose, the infant, the severely disabled are fully human because kind-membership is not reducible to current capacity. It handles the tribal case: unrealized potential is not absent potential, and there is no coherent civilizational hierarchy to be drawn. And it collapses the imperialist position from the inside: the person making the superiority argument is almost certainly a passenger himself, inheriting far more than he produced.

The measure of what a human being is worth is not what any of us has done. It is what, together, as a kind, we have shown ourselves to be capable of.