The cause of the disappearance of the first people

Названа причина исчезновения первых людей

All tools were made the same way.

Erectus people were the first representatives of our race, lost the competition to their offspring because of “laziness” – the inability to produce complex tools.

“Not like that these people are too annoying for any reason. They made tools from the first stones, which they found at their sites, which is not similar to the more ancient Homo, purposefully seeking high-quality raw materials for their instruments,” says CERI Shipton (Ceri Shipton) from the Australian National University in Canberra.

Scientists believe that approximately 3-2. 5 million years ago our ancestors lived through a true food revolution in the transition from Australopithecus to the first Homo. She was accompanied by a marked reduction in the size of the teeth, jaws miniaturization and the reduction of the masticatory muscles, the simplification of the intestine and, as shown by isotopic analysis of teeth, the visible changes in the diet.

The first “product” of this revolution, not causing disputes among scientists was the so-called bipedal humans (Homo erectus) – the oldest “proven” members of our species have learned to produce relatively complex scrapers, axes and other primitive tools, belong to the so-called “Acheulian culture.”

One of the mysteries surrounding Homo erectus, today is why they practically do not change the manner of manufacture of these tools and tried to improve them for over a million years of existence. For comparison, Neanderthals and CRO-magnons invented several “advanced” techniques they develop over a much shorter time.

Shipton and his colleagues have found a simple, but extravagant explanation of this “conservatism” of the first men of the Earth, studying the Parking lot Homo erectus, opened about 30 years ago in the Central regions of Saudi Arabia, in a place called Saffah.

In that time, says the anthropologist, the Arabian Peninsula was not covered with deserts, and river valleys and savannas, on whose territory people lived, left the territory of Africa.

Saffanah was one of the largest “colonies” of Homo erectus outside the “cradle of humanity” – in its territory, scientists have found about eight thousand artifacts, including a huge number of tools.

Visiting this Park, Shipton drew attention to an interesting pattern. All the tools found on its territory the Arabian anthropologists, were made of andesite, a solid and dense rock which is hard enough to handle.

Boulders and other large, but low-quality pieces of andesite, as noted scientist, met in large numbers on the territory of Saffanah. They were probably washed out by rivers from nearby mountains and into the plains inhabited by the ancient people.

This gave him the idea that Homo erectus could periodically visit these mountains and gather a smaller, but high-quality samples of andesite, more suitable for the manufacture of complex tools. To his great surprise, his team failed to find any trace of what the ancient Arabians have visited these mountains and used them as “quarries”.

Comparing tools from different parts of Saffanah, Shipton and his colleagues noticed that their number and size were not random – they depend on how far away they were from the rivers and the degree of destruction of the nearby deposits of andesite.

All tools were made the same way and almost did not differ from each other. All of this suggests that bipedal people do not put much effort in making instruments of labour and raw materials for its production.

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