Early humans develop language, unlocking cumulative culture

Story: ~170,000 B.C.E. ???  |  Last updated: January 3, 0001

Somewhere in prehistoric Africa, early humans began doing something no other animal had done before: stringing symbols together to describe things that weren’t present, events that hadn’t happened yet, and ideas with no physical form at all. The evolution of language didn’t arrive in a single moment. But at some point — most likely between 100,000 and 50,000 B.C.E. — the capacity became fully operational, and nothing about human life was the same afterward.

What the evidence shows

• Evolution of language: Most researchers place the emergence of fully complex language somewhere between 200,000 and 50,000 B.C.E., linked to behavioral modernity in Africa — with roughly 70,000 B.C.E. representing a reasonable scholarly center of gravity.
• Symbolic behavior: At Blombos Cave on South Africa’s southern coast, archaeologists have found ochre engraved with geometric patterns and shell beads likely worn as ornament, dating to roughly 75,000–100,000 B.C.E. — among the earliest physical evidence of symbolic thinking.
• FOXP2 gene: A gene strongly associated with fine motor control for speech appears in both modern humans and Neanderthals, suggesting some speech capacity may predate the split between our lineages — possibly 500,000 B.C.E. or earlier.

A capacity built over deep time

Language leaves almost no direct trace in the fossil record. Unlike a stone tool or a carved bone, a spoken word vanishes the moment it is made.

What researchers work with instead are proxies: the shape of ancient skulls, the position of the hyoid bone in the throat, genetic markers, and — most richly — the objects early humans left behind. The hyoid bone, which anchors the muscles used in speech, was found at Kebara Cave in Israel in a Neanderthal skeleton dating to around 60,000 B.C.E., and its shape closely resembles our own.

The evidence from Africa is especially striking. The ochre and shell beads at Blombos Cave are not survival tools. They are symbolic objects. Making them, and sharing their meaning with others, requires something very close to language.

By around 70,000 B.C.E., the archaeological record begins to show something different from what came before: a flowering of symbolic behavior, long-distance trade in raw materials, and the coordinated use of complex tools. Many researchers associate this period with what is called behavioral modernity — the full package of capacities that makes humans recognizably human.

What language made possible

The most important thing language did was not name objects. It was enable cumulative culture.

Before language, knowledge could be passed on through imitation and demonstration. With language, it could be explained, corrected, refined, and transmitted to people who weren’t present — including people not yet born. A hunter could describe a distant water source. A healer could pass on the preparation of a remedy. A community could build shared rules, shared memory, and shared identity.

Research by evolutionary anthropologist Michael Tomasello and others has shown that this cumulative quality — each generation building on what the last one learned — is the defining feature of human culture. No other species does it at anything close to this scale. Chimpanzees use tools. Crows solve puzzles. But humans alone have built civilizations, because humans alone can say: “Here is what I know. Here is what you should do differently. Here is what happened a thousand years ago.”

Language also made cooperation at scale possible. Hunter-gatherer bands typically numbered in the dozens. But research into deep human social history suggests that language allowed early humans to maintain and coordinate relationships across bands — to negotiate alliances, share resources during lean seasons, and build the kinds of inter-group trust that made larger social networks viable. This is sometimes called the “social brain” hypothesis, and language is its operating system.

Lasting impact

It is difficult to name a human achievement that does not ultimately trace back to language.

Agriculture, written records, legal codes, mathematics, music, medicine — all of these depend on the ability to transmit complex knowledge across time and space. The first cities, which began emerging around 7,000–5,000 B.C.E., were possible only because language had already built the social and organizational infrastructure to hold them together.

Genetic research tracking the dispersal of modern humans out of Africa — beginning in earnest around 70,000–60,000 B.C.E. — suggests that the populations that spread most successfully were those with the full behavioral toolkit, including language. The ability to plan routes, share environmental knowledge, and coordinate group decisions across unfamiliar terrain may have been as important as any physical adaptation.

Language also shaped the inner life. The capacity for narrative — for telling stories about who we are, where we came from, and what we owe each other — is the foundation of every moral, spiritual, and cultural tradition humanity has ever produced. It is how grief is shared, how children learn to become members of a community, and how the dead continue to speak to the living.

Every oral tradition, every folktale, every lullaby is a piece of technology tens of thousands of years in the making. Linguists studying the deep structure of human languages have found that beneath their enormous surface variety, all human languages share fundamental features — suggesting they all grew from the same ancient cognitive root.

Blindspots and limits

The origin of language remains one of the most contested questions in all of science. There is no moment we can point to, no artifact that says definitively: here is where it began. The 70,000 B.C.E. figure is a scholarly center of gravity, not a confirmed date — and some researchers argue for much earlier origins, while others place full syntactic complexity later.

It is also worth acknowledging that language, for all its power, has always been a tool of both connection and exclusion. The same capacity that builds shared identity can be used to mark outsiders, enforce hierarchy, and erase the knowledge systems of peoples whose languages were suppressed or destroyed — a loss that the world is still reckoning with.

Read more

For more from Good News for Humankind, see:

• Indigenous communities secure land rights for 160 million hectares
• Global suicide rate has fallen by 40% since 1995
• The Good News for Humankind archive on prehistory

About this article

• 🤖 This article is AI-generated, based on a framework created by Peter Schulte.
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