I believe that no one can really make it clear. We humans can survive on the earth for millions of years, stand out from tens of millions of creatures and evolve into intelligent civilization, which is also screened out by cruel environment. In theory, human beings evolved from apes, which is also a point that everyone can agree with. After continuous research, scientists found that our ancestors of modern people actually originated in Africa. About 70 thousand years ago, mankind began to expand from Africa and spread all over the world.

A long time ago, there was a saying that cavemen were extinct almost hundreds of thousands of years ago. They were not our direct ancestors. It is a very long process for us humans to evolve from apes to humans. It took millions of years for genes to evolve into modern people. This process is not directly formed, but there will still be many stages. For example, every 1 10,000 years, human genes will move forward, and with the passage of time, apes will get closer and closer to modern people.

In fact, at present, we humans have been constantly evolving. Perhaps the degree of human evolution is very slow now, and perhaps it will not be much different from our present human beings in another million years. Therefore, there is no limit to evolution. How did the first human being come into being and how did it appear? In fact, this topic itself is wrong, because the birth of human ancestors can not be human, nor can it continue life. Because human beings are the development of a population, it is impossible to have one or two eggs, but it may be a batch.

There is no accurate conclusion about the origin of human beings. If you want to explain a mystery, you need a longer process.