When human beings, with the help of science and technology, walked out of the earth to see the vast universe, an eternal topic appeared, that is, the existence of extraterrestrial civilizations? Perhaps before human beings have stepped out of the earth, many people will think: human beings are the only intelligent civilization in the universe.
But when we truly see the vastness of the universe, few people have such obsessions. More people believe that alien civilizations exist, and scientists are even more steadfast in this regard. Let's not look at the observable universe of 93 billion light-years, let's take the small Milky Way, which is about 100,000 light-years in diameter, with 100-400 billion stars.
Each star basically forms a star system, with an unequal number of Earth-like planets orbiting it. Conservative estimates, the number of terrestrial planets in the Milky Way has reached at least one trillion, even if a very small probability of the birth of life, the birth of intelligent civilization, then there are many life planets in the Galaxy, there will be a high probability of the existence of intelligent civilization.
And in the current observable universe, there are at least a trillion galaxies like the Milky Way, so the number of cosmic civilizations may be too many for us to estimate. It is only because the distance between galaxies is based on light years, that it is too far away that it is difficult for civilizations to reach each other.
However, with the continuous progress of human technology, once we become an interstellar civilization in the future, we will be able to go out of the solar system for interstellar voyage. In the process of interstellar voyage, it is inevitable to encounter other intelligent civilizations, so an interesting topic arises here: if a low-level civilization planet is discovered by humans, will we choose to destroy it?
Many people may think that human beings are very kind and will not bully weak civilizations, let alone eliminate low-level civilizations. Is this really the case? If you think so, you would be sorely mistaken, are human beings a good civilization? This may be difficult for us to define.
Let's not consider what kind of attitude human beings will have towards extraterrestrial civilizations, let's first look at whether there is harmony within human beings, and is there harmony within human beings? The answer is no. Mankind has formed civilization for more than 6,000 years now, and in these years, the contradictions within mankind have never stopped, and from ancient times to the present, wars large and small have not stopped for a moment.
Even in the era of peace, there are often various frictions within human beings, resulting in some small local wars. From the situation within human beings, we can see that human beings are not a civilization that likes peace. In the bones of human genes, greed and strife will always exist, and even if in the future we go to the stars and become an interstellar civilization, the war within mankind may not be completely eliminated.
Humanity is a civilization that likes to fight, and when we become an interstellar civilization and have the ability to go out of the solar system, the contradictions within human beings may be very weak, and then the spearhead will be pointed at the cosmic starry sky, go to other galaxies to find intelligent civilizations, and then develop new battle modes and venues.
There are countless civilizations in the universe, and in the journey of human exploration of the stars, we will see a variety of intelligent civilizations. If we find a low-level civilization that has not yet gone to the stars, the attitude of humanity may be adjusted according to the situation of this civilization. No matter how it is adjusted, it is difficult for human beings to cooperate and trade fairly with the natives of the lower civilization planet.
When human beings discovered low-level civilizations, their attitudes were nothing more than two, one was peaceful and cooperative coexistence, and the other was to eliminate them and completely colonize and occupy the planet. So under what circumstances would humanity cooperate peacefully with lower civilizations? Many people may say that the smaller the gap in strength between low-level civilizations and human beings, the higher the possibility of peaceful cooperation.
If you think so, you may be wrong, the greater the gap in strength between low-level civilizations and humans, the higher the likelihood of peaceful cooperation. Some people may say, how is this possible? The greater the gap in strength with humans, wouldn't it be easier for us to wipe out these indigenous people? In this case, do we still need to live in peace with the original population?
In fact, as long as we think carefully about it, you will understand the reasoning. When human beings discover a low-level civilization planet, we value two things, one is whether the planet's environment is adapted to human survival, and the other is whether there are resources and energy on this planet that are very important to human beings.
Judging the value of a planet is nothing more than to consider from these two aspects, if the environment of this low-level civilization planet is not suitable for human survival, and there are no precious resources that human beings need. We will not waste time on one planet, but will continue to move forward to find other civilized planets.
If this low-level civilization planet is suitable for human survival and has the precious resources we need, then humanity will not miss it, and colonization is inevitable. At this time, we have to take measures according to the civilization strength of the original inhabitants on this planet, if the original inhabitants are still in the era of primitive civilization, there is no understanding of the universe and alien civilizations.
At this time, the human spaceship has descended on this planet, what will the original inhabitants think? The first will feel frightened and terrified, because they don't know what these things are coming down from heaven? If the original inhabitants had myths and legends, they might regard humans as gods to worship. And human beings can also pretend to be gods and show these primitive inhabitants some technology, which may be a magic in the eyes of primitive intelligent life.
When humans become gods in the eyes of the natives of low-level civilization planets, we can use the status of gods to hire these natives for free and help us exploit resources. And human beings can naturally occupy this planet and be welcomed by the original inhabitants, because we are gods in the sky in their eyes, and it is a supreme honor to be able to inhabit their planet.
But if the original inhabitants of the low-level civilization planet have walked out of the primitive era of ignorance and entered the initial era of science and technology. It is naturally impossible for human beings to disguise the identity of the gods, just as we do not believe in the existence of gods and immortals now, even if a powerful spaceship descends on the earth tomorrow, we will only think that it is an alien civilization in the universe.
After human beings lose their disguised identities as gods, can we still occupy this low-level civilization planet for free and at no cost? The answer is that it is impossible, we want to live on this planet, we will be hindered by the indigenous people, even if we want to exploit resources, humans need to exchange other things with low-level civilizations.
At this time, it is difficult for human beings and low-level civilizations to form a completely equal cooperative relationship, and low-level civilizations will guard against us and will think of taking advantage of human beings. And humans will also think about how to get more benefits from low-level civilizations, even completely free resources. Under this contradiction, it is possible for human beings to launch interstellar wars, completely destroy this low-level civilization, and then occupy the entire planet's resources.
Through the above analysis, I believe that many friends have understood the way. It can be seen that the cosmic civilizations also need strength to speak, and only the stronger the strength, the more right to speak. And the earth may also face the visit of advanced civilizations in the future, if the difference between the strength of the incoming alien civilization and human beings is very large, it is safe for human beings, because in the eyes of advanced civilizations, human beings are only weak and small like ants, and they are too lazy to eliminate.
But if the disparity in the strength of the arriving alien civilization and human beings is not particularly large, it may be the most dangerous for human beings. It is precisely because of this that Hawking has warned many times: let human beings not try to contact alien civilizations, whether it is a high-level civilization or a civilization that is not particularly different from human strength, once it comes to the solar system, it may be a very dangerous thing for the earth and humans.
If we want to contact and understand alien civilizations, it is best to wait until human beings have developed to a higher level, become an interstellar civilization, and have the ability to travel interstellarly, and then we will take the initiative to go out and look for them. The current human strength is not even a first-level civilization, it is also a low-level civilization, once it encounters any interstellar civilization, if there is hostility to us, then humanity may usher in destruction.