Humans have never given up the exploration of extraterrestrial life, but they have never made substantial progress. It remains to be seen whether human beings are imprisoned by alien creatures on earth. Humans have lived on the earth for a long time and evolved in the long river of history before they become such highly intelligent creatures. Walking on four legs from the beginning has successfully evolved into walking on two legs, and it has also experienced many difficulties and hardships. In order to better adapt to life on the earth, human beings have been constantly undergoing comprehensive changes. Now, they have naturally integrated with the earth, advancing and retreating together, taking charge of the creatures on the earth and becoming the masters of the earth.

1. Many people think that the earth, as the home of human beings, was born for human beings, but many people have different views. An American biologist once asked a question. He thinks that the earth is not the most suitable place for human beings to live. Humans may have lived on other planets from the beginning, but they were left on the earth by aliens, who have been monitoring human life on the earth. This statement seems absurd, but it is not contradictory. If the earth is really made for human beings, then why do people get sunburn or even skin cancer when exposed to the sun for a long time? For other creatures on earth, this has never happened.

Second, we can see the influence of the earth on human beings in many ways. If we look at this question from different angles, we will get different answers. If all human beings appeared on the earth because of aliens, they sent them to the earth, which is why human beings can't find the existence of alien civilization. They are relatively advanced civilizations. If you want to hide them, there is no way for humans to find any traces. There is more than one gap between human civilization and alien civilization.

Third, according to the most objective and rational judgment of mankind at present, the energy theory that is ruled out first. If alien civilization really wants to provide some kind of energy through human beings, it should increase the number of human beings in various ways and reduce their wisdom, thus making human beings a stable energy source. But in reality, the development of human history can be described as twists and turns, facing genocide several times, and there is no obvious sign of the active intervention of alien civilization, so let's rule out the energy theory first.