Man is an immigrant of the earth.

I don't think human beings can be invaders, let alone destroy the aborigines of the earth, because human beings have not reached that level. Simply put, if the strength of human beings can be strong enough to come to the earth from the primitive planet and then destroy the primitive race of the earth, then the science and technology of human civilization should have reached the level of "the third civilization of the universe" at that time. In that case, why can't modern human science and technology civilization reach the "first-class civilization of the universe"?

Has human Wen Mingzhen regressed? They have been able to invade other planets, and at worst, they will not directly regress to primitive society, and gradually develop from the Stone Age to the technological age. This is totally illogical. Although Darwin's theory of evolution can explain the evolution and origin of most species, there are still some loopholes and evolutionary gaps, but these gaps do not mean that they cannot be filled, but that human beings have not discovered them.

Throughout the history of human evolution, from apes to homo sapiens, scientific and technological civilization has advanced step by step according to time. If it is really the last batch of human beings who invaded the earth, how can it develop so slowly and the process be so difficult? So can humans become an invasive species? The appearance of human beings is more the favor of nature and the favor of the earth. Human beings can stand out from so many creatures, which also shows the particularity of human beings, so human beings should work harder to develop and attach importance to environmental protection.

However, many people suspect that prehistoric civilization existed before human civilization. These civilizations may not be as developed as human beings now, but they are still beyond the development level at that time. Most people think that these prehistoric civilizations immigrated to the earth from other planets.

In primitive society, all races are keen to record what they have seen, heard and lived on stone walls, and also depict their totem worship on them. During the archaeological process, scientists discovered many caves similar to those inhabited by the original inhabitants, which depicted many grotesque patterns, including some modern man-made patterns, such as rockets, astronauts and spaceships. If these are what the indigenous residents saw and heard at that time, then they may have seen foreigners and recorded them on the stone wall, or they may be foreigners themselves, but they just became interested and recorded them.

But on the whole, the first one is more likely, because if outsiders record it themselves, their recording methods and means should be more advanced, but they are painted with vermilion or Carboniferous. Among many advanced civilizations, Mayan civilization has always been regarded as a foreign civilization.

Because they have advanced ideas and culture far beyond the civilization at that time, the outstanding achievements of the Mayans in astronomy are amazing even now. Isn't it strange that the data calculated by human beings with the help of advanced instruments are almost the same as those calculated by Maya? Why are they so smart and have such superb computing power? There is no doubt that they may come from extraterrestrial planets or be instructed by "experts".

Scientists believe that prehistoric civilization does not exist, and after so many years of exploration, no traces of aliens and their figures have been found, so everything is people's imagination. But not finding it doesn't mean it doesn't exist. Academician of Chinese Academy of Sciences clearly believes in the existence of aliens, so where are they? I think we need time to find it. It may take a long time, but there will be results.