Deep in the layers of Qesem Cave and other sites across Israel lie pebbles and worn flint tools that no one has found a use for, and a team from Tel Aviv University now asks whether they were keepsakes. Anyone who has kept a shell from a shore or a stone from a distant trip will recognize the impulse, and the researchers suggest it may reach back half a million years, when objects carried home could anchor a person's memories of places, people and promises. The idea remains a hypothesis, but it invites us to see in these quiet stones an early chapter of how humans learned to remember their own
Did Early Humans Keep Souvenirs? Tel Aviv Study Traces the Habit 500,000 Years Back
Objects tied to memory have accompanied humans for half a million years
Mark
Start with the basics. What did they actually find?
Mimi
Colorful pebbles at Qesem Cave brought from various places, flint hand axes from the Sakhnin Valley made from stone with fossils or odd formations, and old flint tools at Revadim, Jaljulia and Qesem that were collected after aging.
Mark
And none of it had an obvious use?
Mimi
The pebbles had no identified practical use. The hand axes were tools, but the striking features were preserved at the center, where they could be seen and touched.
Luke
I want to separate what's found from what's inferred. The objects are real. "Souvenir" is the authors' interpretation.
Mimi
They say so themselves. They call it a hypothesis, not proof that every unusual stone was a keepsake.
Mark
Why would a souvenir matter for evolution?
Mimi
The idea is that an object could help someone tell a lived experience from a story they'd heard, and could back up an account when shown to others. That supports trust and cooperation.
Luke
The leap from there to brain evolution is the shakiest part. The study suggests souvenir use may have increased evolutionary pressure on memory-source mechanisms. "May have" is carrying a lot, and nothing in the reporting shows it was measured.
Mark
And Barkai's point about elephants?
Mimi
He links the habit to large animals disappearing, which pushed people toward new hunting grounds with fallow deer and wild cattle. Objects from those places could keep a bond with the land that fed them.
Luke
That's his suggestion for timing, offered as a possibility. We don't have confirmation that it caused anything.
Der Puls
- Colorful pebbles and aged flint tools turn up at Israeli sites where no practical purpose can be found, raising a puzzle that unsettles the usual story of early toolmaking.
- Researchers from several institutions argue these objects were carried home deliberately, challenging the assumption that only useful things were worth hauling.
- The team links the habit to memory, trust and cooperation, proposing that a stone from a particular place could recall an experience and lend credibility to a personal account.
- Environmental upheaval, especially the vanishing of large animals, pushed people toward new hunting grounds, and the authors suspect souvenirs helped them hold onto those places.
- The study stops short of proof, and its future depends on whether similar collections of unused objects appear at other sites.
Deep in the layers of Qesem Cave and other sites across Israel lie pebbles and worn flint tools that no one has found a use for, and a team from Tel Aviv University now asks whether they were keepsakes. Anyone who has kept a shell from a shore or a stone from a distant trip will recognize the impulse, and the researchers suggest it may reach back half a million years, when objects carried home could anchor a person's memories of places, people and promises. The idea remains a hypothesis, but it invites us to see in these quiet stones an early chapter of how humans learned to remember their own lives.
At Qesem Cave in Israel, archaeologists have found small, colorful pebbles that were carried in from elsewhere. No one has identified a use for them. They were not tools, and nothing suggests they were meant to be. A new study from Tel Aviv University asks why anyone would bring them home, and offers an answer most people will recognize from their own pockets: they may have been souvenirs.
The paper, published in Evolutionary Anthropology, brings together archaeologists, psychologists and neuroscientists. Their argument is that the habit of keeping a shell from the beach or a stone from a trip reaches back some 500,000 years. Evidence comes mainly from Israeli sites, including hand axes shaped around unusual fossil features and older flint tools kept after their surfaces had aged.
The researchers suggest that an object from a particular place could bring back a personal experience, and could help someone tell firsthand memory apart from a borrowed story. In societies where obligations and alliances are tied to places, reliable personal memory supports trust and cooperation.
The authors go further, proposing that over generations such souvenir-keeping may have shaped the brain's ability to judge where a memory came from, feeding the growth of autobiographical memory and the sense of a continuous life. Barkai links this period to the disappearance of large animals, which pushed people to learn new hunting grounds and to hold on to them through objects.
They are careful to call this a hypothesis. Still, objects tied to memory have accompanied humans ever since, and further finds of collected, unused objects at other sites could strengthen or weaken the case.
At Qesem Cave in Israel, archaeologists have found small, colorful pebbles that people carried in from other places. No one has identified a use for them. They were not tools, and nothing suggests they were meant to be. A new study from Tel Aviv University asks why anyone would haul them home, and offers an answer most people will recognize from their own pockets: they may have been souvenirs.
The paper, published in the journal Evolutionary Anthropology, was led by Dr. Yoav Ram of the School of Zoology, along with Prof. Ran Barkai and Dr. Ella Assaf Shpayer of the Department of Archaeology. Prof. Liad Mudrik of the School of Psychological Sciences, Dr. Bar Efrati of the University of Oxford and independent researcher Tal Simon collaborated. The team combined archaeological evidence with ideas from psychology and neuroscience. Their argument is that the habit of keeping a shell from the beach or a stone from a trip reaches back some 500,000 years.
The evidence comes mainly from sites in Israel. Besides the pebbles at Qesem Cave, hand axes from the Sakhnin Valley were shaped from flint that contained fossils or unusual geological formations. In some of them, the distinctive feature was left at the center of the stone, where it could be both seen and touched.
A second group of objects is older flint tools. At Revadim, Jaljulia and Qesem Cave, researchers found tools that had been picked up after their surfaces changed with age. Some were resharpened, but most kept their original surfaces and the marks of earlier workmanship. The authors suggest the aged look may have been exactly what made them worth keeping, since the appearance of the objects told their own story.
The researchers propose that an object brought back from a particular place could trigger the memory of a personal experience. Its look and feel may also have helped the owner tell something lived firsthand from a story heard from others or imagined. And because a souvenir can be carried and shown, it may have lent credibility to a personal account. In human societies, remembering encounters, alliances, gifts, mutual obligations and rights tied to particular places matters a great deal, and reliable personal memory supports cooperation, relationships and trust.
From there the study makes its largest claim. Over many generations, the use of souvenirs may have increased evolutionary pressure on the brain mechanisms that identify the source and reliability of memories. Material culture and biological evolution would then have shaped one another, feeding the development of autobiographical memory: the ability to organize personal experiences into a continuous life story that underlies the sense of self.
Why that period? Barkai points to environmental change. "The disappearance of large animals, particularly elephants, forced prehistoric humans to develop new hunting methods and become familiar with hunting grounds inhabited by animals such as fallow deer and wild cattle," he said. Objects taken from those places may have helped people keep a personal connection to the locations that had become the source of their livelihood.
The authors are explicit that this is a hypothesis, not proof that every unusual stone was a souvenir. Still, they note that objects tied to memory have accompanied humans from half a million years ago to the present, which makes it reasonable to assume the behavior carried real meaning. What would strengthen or weaken the idea is further finds at other sites showing the same pattern of collected, unused objects.
Bemerkenswerte Zitate
The disappearance of large animals, particularly elephants, forced prehistoric humans to develop new hunting methods and become familiar with hunting grounds inhabited by animals such as fallow deer and wild cattle.— Prof. Ran Barkai, Tel Aviv University
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