Science
Is language born or learned? An old fight, through the selfish gene
A new Cambridge book has just reopened one of the oldest arguments in science: is the human gift for language something we are born with, or something we learn? Half a century after Chomsky lit the fuse, the innateness debate is not over — it has just gained a fresh round.
The book is Genes, Brains, Evolution and Language: The Innateness Debate Continued, by linguist Harry van der Hulst, published in 2025. Its subtitle is the honest part. It does not announce a winner. It drags the question — in print, deliberately — into psychology, anthropology, computer science, neuroscience, genetics and evolutionary biology, and lets each discipline pull on the rope. The core dispute is the same one Noam Chomsky posed in the 1950s: do humans come equipped with a specific, innate machinery for language, a kind of universal grammar written into the species? Or is language mostly culture — something a flexible brain soaks up from the people around it?
The trap in the question
Here is the first surprise: framed as "born or learned," the question may be slightly broken. It invites you to pick a team. But almost no serious scientist on either side believes language is purely one or the other. A child raised in silence learns no words — that much is learning. Yet that same child, given any normal human environment, acquires grammar with a speed and uniformity that no chimpanzee, however lovingly raised, ever matches — that much smells like equipment. The real argument is not whether nature and nurture both matter. Everyone grants that. The argument is over the mix: how much of the machine is pre-installed, and how much is downloaded after birth.
To keep score in a fight like this, you need a referee that does not care which side wins. Richard Dawkins handed us one in 1976, and he was not even talking about language. He was talking about who, or what, evolution is really working for.
Two replicators, one skull
Dawkins' move in The Selfish Gene was to shift the camera. Don't ask what's good for the individual, or good for the species, he said — ask what's good for the gene, the thing that actually gets copied down the generations. By that light, your body is a "survival machine," a vehicle genes built to carry themselves forward. Crucially, genes can't micromanage you in real time; they work by pre-loading strategies — and one of the most powerful strategies they ever loaded was a brain that learns.
That is exactly the "born" half of language. Genes, across hundreds of thousands of years, shaped a primate skull whose wiring takes to grammar the way a duckling takes to water. They did not write your sentences. They wrote the brain that writes sentences — and then, having built it, they largely let go.
Then Dawkins did something that makes him the perfect referee for this debate. In the book's final chapter he introduced a second replicator. Ideas, tunes, phrases, ways of doing things — they too get copied from brain to brain, mutate, and compete to survive. He called them memes. And language is the meme's home turf: words and grammar are exactly the kind of thing that leaps between minds by imitation. The instant our ancestors could talk, a brand-new evolutionary process switched on — one that runs not over millennia in the genes, but over a single generation in the culture.
Why the rope keeps moving
Seen this way, the "born vs learned" tug-of-war stops looking like a contradiction and starts looking like a division of labour between two replicators. The gene's job ran over a geological span: it engineered, slowly and once, a brain that is hungry for grammar. The meme's job runs in fast-forward, every single generation: it pours actual Mandarin, or Swahili, or English into that brain, and those languages themselves drift, split and evolve far quicker than any gene ever could. The debate's rope keeps sliding back and forth because it is being pulled by two evolutionary processes operating on wildly different clocks — and both are real.
This is also why the new book reaches for so many disciplines at once. Genetics can tell you about the hardware; it cannot tell you why a teenager's slang dies in five years. Computer science can model how grammar might be learnable in principle; it cannot settle how the first humans crossed from grunt to sentence. Each field is holding a different end of the same rope. Van der Hulst's wager is that no single discipline gets to declare victory — and Dawkins' two replicators explain why that wager is sound.
The core idea, in one line
"Born or learned" is a false either/or: genes built a brain that can learn language, and language, once born, became a second evolution of its own.
A word of caution from Dawkins himself
It would be easy to over-read this and conclude that genes "program" how you speak, or that culture is just a passenger. Dawkins spent a good part of his book warning against exactly that. Genes set tendencies, not scripts; "evolved" never means "right" or "fixed." A brain built by selection to absorb language is also a brain that can be taught a second language at forty, or invent a slang its parents will never decode. The innateness on offer is a capacity, not a content — the loom, not the cloth woven on it.
And memes, his second replicator, are no gentler a force than genes. An idea spreads because it is good at spreading, which is not at all the same as being true or useful to you. That caution matters here: when people argue that some grammar or accent is "natural" and another is "lazy," they are usually mistaking a successful meme for a law of nature. The selfish-gene lens asks a cooler question — not "which way of talking is correct," but "which replicator does this serve, and on whose clock."
What it means for you
You don't have to settle a fifty-year-old linguistic war to take something home from it. The first takeaway is a habit of mind: when you next meet a "nature versus nurture" headline — about intelligence, temperament, addiction, anything — resist the urge to pick a side. Ask instead about the mix, and about the two different clocks. There is almost always a slow, gene-built capacity underneath, and a fast, culture-built content on top, and confusing the two is how most of these arguments go wrong.
The second is closer to home. You are, quite literally, the place where two evolutions meet. Your genes handed you a brain ravenous for language; your culture handed you the particular words now running through your head — including these. Every sentence you pass on, every phrase your kids pick up from you, is a meme choosing its next host. That is not a reason for fatalism. It is a reason for attention. You can't pick the loom you were born with. You can, more than you think, choose which threads you keep weaving into it — and which ones you finally let drop.
Framework from Richard Dawkins, The Selfish Gene (gene as replicator / survival machine / the meme), via the vlog-selfish-gene knowledge skill. The innateness debate and the 2025 Cambridge book Genes, Brains, Evolution and Language (H. van der Hulst) are real and unresolved; specific research and claims should be checked against the primary sources. Popular-science commentary, not academic linguistics.