Why is it that in the 4.5 billion years of the earth, only humans are considered higher organisms?

The earth has been formed for 4.6 billion years, and the history of life on the earth has been more than 3 billion years. This should be a question that many people have.

In fact, scientists also think so, there have been hundreds of millions of life species in the history of life on the earth, all of which have become extinct, and the emergence of modern Homo sapiens is not more than 250,000 years, which is only a short moment compared to the time of life history on the earth. However, judging from the existing bioarchaeological evidence, there have really been no more advanced and intelligent creatures than humans in the history of life on earth.

<> bioarchaeologists have conducted a fairly comprehensive excavation of the biological level of the earth's strata, sorted out the biological evolution and development tree map, and found that the development of life on the earth from ancient times to the present is following the order of development from the lowest to the highest, which is very consistent with the biological evolution theory, from the mass extinction of the dinosaurs 65 million years ago, mammals and birds have evolved into the highest animals on the earth.

Different life species tend to have different development routes, for example, in mammals, cats have evolved the most perfectly coordinated body shape and movements, and primates have evolved developed brains, especially humans, the ratio of human brain to body far exceeds that of other mammals, which is the capital of human beings to become a higher intelligent species, and before humans, no species has been found to have such a developed brain as humans, and no species can create things with both hands, There are not many animals that can even walk upright and grasp things with their forelimbs.

Among all the relics of civilization that have been found on the earth, their time is basically not more than 10,000 years, and they can also be identified as created by humans, and there are no relics of civilization and technological things created by non-humans on the earth, so we can basically identify that there have been no advanced intelligent beings similar to humans on the earth, and human beings can be said to be the first generation of advanced intelligent creatures on the earth.

However<> the vastness of the universe can be described as vast, there are too many planets in the universe to count, we cannot rule out the possibility that there are no advanced intelligent beings on other planets, nor can we rule out the possibility that extraterrestrial advanced intelligent beings have come to the earth, but we have not found conclusive evidence that extraterrestrial higher intelligence has come to the earth.

Nowadays, human beings are the only advanced intelligent species on the earth, but human beings are also developing, and the technology created by human beings is also developing, and in the future, human beings are likely to be replaced by self-aware artificial intelligence created by themselves.

Because during the 4.5 billion years of the earth, only humans have evolved advanced intelligence, so only humans are considered advanced creatures.

Because among all living things, the human brain is very well developed, and the IQ is also very high, far surpassing that of other living things.

Because through continuous evolution, humans have become the most intelligent animals, and their indicators are very high.

Before the advent of humans, were there any other biological civilizations on Earth?

No. The history of mankind is about 3 million years old. 100 million years ago, the earth was in the Cretaceous period, this period was the world of dinosaurs, 65 million years ago the extinction of dinosaurs, the explosion of mammals, the protoancient monkeys appeared on the earth.

No. Because there were no intelligent beings on Earth 100 million years ago, there would be no human-like creatures.

I don't think so, because human beings evolved slowly, and he wasn't so advanced and sharp at first, he only became like this in the process of continuous evolution.

With the development of our current science and previous explorations, no such creatures have been found, and it is very likely that we humans are the first batch of advanced creatures to appear.