Why did Hawking and Liu suggest that we should not reply to aliens?

This is actually their judgment on the form of alien civilization.

Do aliens exist? First of all, we really have no way to prove the existence of aliens now. At the very least, there is no definite evidence.

However, according to the principle of cosmology, human beings find that the earth is not special at all in the universe. Standing on the earth and looking around, the universe is similar. We are just one member of the vast universe. If we are not special, then life is not special, so aliens should exist with a high probability.

Alien civilization but what it looks like, we don't know, but at least we know that we are not special. Simply put, we should not be the weakest civilization in the universe, nor should we be the strongest.

If so, even the weakest ones at our level are actually limited by the long distance between the star systems in the universe and cannot communicate with each other.

But there is also a situation where the other side's scientific and technological level is several orders of magnitude higher than ours, and it can realize interstellar immigration. Without knowing each other's intentions, communicate with each other rashly. It doesn't matter if the other person is gentle. If the other party is violent and cruel, it will be over, and we may be wiped out. This is actually Hawking's starting point.

The law of the dark forest, while Liu believes that limited by the size of the universe and the possibility of technological explosion, every civilization may actually be a hunter with a gun. They will not give up and expose themselves easily, and once exposed, they are likely to be destroyed. This is his world view.

Therefore, both Hawking and Liu are actually worried that this will bring destruction to human existence.

Although Hawking has passed away, his warning that humans should not take the initiative to contact aliens is still remembered. Coincidentally, Liu Ye, a famous science fiction writer, expressed a similar view, and further improved the view of "no active contact with aliens" with the "dark forest theory".

Emotionally, we hope that aliens are kind and charitable, but life experience on earth tells us not to trust anyone we have never seen. Putting them into the universe means not to trust any civilization we have never seen.

Searching for alien civilization is of great significance, but it is also because of its great significance. If we contact militant advanced civilization, a series of achievements made by human beings from the African continent 70,000 years ago will be in vain, because alien civilization will destroy us instantly.

At present, there is no evidence that the moral level of alien civilization in the universe will improve with the improvement of scientific level, and it is even difficult to say whether morality exists widely in the universe. We humans look for alien civilizations with the mentality of looking for friends, and it is very likely to provoke robbers in the end. What is even more frightening is that the present human civilization can't resist this kind of robber at all.

From the probability point of view, alien civilizations must exist, and it is only a matter of time before humans meet them. Without knowing each other's good and evil, it is definitely better to meet late than early. After all, the scientific and technological level of human civilization has been improving, even if it is linked to evil alien civilization in the future, it will not necessarily be hanged, but the current scientific and technological level is not suitable for "finding friends" in the universe with great fanfare.

After learning that China's "Eye of the Sky" can observe the depths of the universe for billions of light years, Hawking did warn "Eye of the Sky": Don't reply to aliens! Do not reply! Do not reply!

Liu is a science fiction writer in China. In his famous science fiction novel "Three-body", he also advised not to contact aliens. However, it is unscientific to say that he advised us not to reply to aliens out of context based on a science fiction work.

Why did Hawking advise us not to reply to aliens? Hawking believes that there must be an alien civilization more advanced than the earth civilization in the vast universe, and their combat effectiveness and scientific and technological level are likely to be N times more advanced than human beings. Once the earth discovers these advanced cosmic civilizations and responds to their signals, this civilization will naturally attack the earth in an instant. The earth will be destroyed or enslaved by it. This is the famous "dark forest law" in "Three-body".

Therefore, Hawking has repeatedly warned us: Never reply to aliens.

We also ignore these warnings. As for whether aliens really have the ability to destroy the earth, let's go find aliens.

Didn't Hawking himself look for aliens in proxima centauri four light years away through the "Breakthrough Shooting Stars Project"?

Mr. Hawking and Liu's suggestions may have some truth, but if we think calmly, can we avoid them?

Hawking and Liu suggested that humans should not reply to aliens, which may be based on ignorance of aliens, what kind of life they are, and to what extent their science has developed.

However, whether human beings are willing or not, welcome or not, reply or not, they are all here.

There are many mysteries found on the earth, such as flying objects of various shapes, flying saucers, buildings that appeared centuries ago, the bodies of aliens working in the United States after the flying saucers crashed or living aliens.

What should come will come, and it's no use returning it. Only after direct contact can we know the secret of life in outer space.

Although Hawking has passed away, his warning to humans "don't try to contact aliens" has always been remembered. There is some truth in this sentence "Don't try to contact aliens". According to Liu's dark forest law, if human beings want to protect themselves, they must hide themselves and don't think about replying to aliens. Because once humans expose the position of the earth, it may be very dangerous.

Many people think that there is civilization not only on the earth, but also in other corners of the universe. And there must be a super civilization in the universe, and they can travel freely between stars. If we return to this super civilization, it may be very dangerous for us human beings. Because this civilization wants to destroy mankind in an instant, it is dangerous to reply to aliens.

We don't know what the civilization bred in the universe will look like. Perhaps, as the dark forest said, in order to save themselves, they will kill another civilization by any means, so if humans want to save themselves, they should not try to contact with alien civilizations or reply to aliens.

This suggestion is unnecessary.

If there are no aliens at all, no matter how we look for them or how we reply, it's useless!

If there are aliens, if their civilization is not as good as ours, they won't bring us trouble, but judging from our present civilization, we are grateful that they won't bring trouble to others!

If there are aliens, if alien civilization is far superior to ours, even if we don't take the initiative to look for and reply, do we think others don't know? It's wishful thinking, and it's stealing the bell!

So what we humans have to do is to develop science and technology and achieve a high degree of civilization. Judging from the current situation, there is still a long way to go! ! !

With the development of mankind in the field of space, the problem of extraterrestrial civilization has also come to the fore. Contact with extraterrestrial civilization is likely to be an opportunity for the development of human civilization, and it is also likely to lead to the ultimate extinction of mankind, all of which are in the minds of aliens.

The universe began with the Singularity Big Bang 65.438+0.382 billion years ago. At present, the unobservable part of the Hubble volume with a diameter of 93 billion light years is at least 23 trillion light years. Statistically speaking, no matter how small the probability of life forming civilization is, if the base is large enough, the result is inevitable. There are civilizations in the universe, and the number will not be less.

So are aliens good or evil? None of us know this, nor do we know whether contact with aliens will bring us opportunities or disasters. From Liu's Three-body, we can learn his views. The law of the dark forest speaks for itself. In the dark forest, we are all like hunters with guns. Whoever speaks first has to try. Mr. Hawking's point of view is also very clear. Before his death, his old man made similar remarks, and he didn't want mankind to take the initiative to look for extraterrestrial civilization.

But in fact, what we do is just the opposite. Everyone is trying to actively look for aliens. For example, Sister Navigator, an interstellar probe launched in the last century, carries human information and is now flying outside the solar system. For example, Voyager 1 is now 22 billion kilometers away, and it takes about 17000 years to fly out of the solar system. For example, China's Sky Eye also has the task of searching for extraterrestrial civilization.

This may be the general trend of human space exploration in the future, and exploring extraterrestrial life is also an important task besides scientific exploration.

Text/science black hole, picture source network invasion and deletion The current fact is that no matter who advises not to reply to aliens, scientists on earth are trying to find aliens, collect alien signals, send information about human civilization to outer space, and let possible aliens know the existence of human beings and the earth!

Scientists' behavior is just the opposite of Hawking's and Liu's failure to reply to the alien's point of view, which is embarrassing. What does this mean?

However, any opinions and ideas about aliens are subjective wishful thinking. Everyone has their own views on aliens, and it is impossible to say who is right or wrong.

Hawking, as the king of the universe, did not explicitly say not to reply to aliens, but only said to be careful to contact aliens.

Needless to say, Liu is not a scientist, but a science fiction writer. To put it bluntly, his point of view only stays at the level of science fiction. The dark forest law in Three-body is not a science. Even according to the discovery process of human science, the dark forest law is wrong! Because according to the dark forest law, human beings should not send any signals of human civilization and detectors to outer space, but the fact is just the opposite!

To put it bluntly, it is more likely that Hawking and Liu did not say anything about not replying to aliens. Some people just use their fame to express their views and make their views look higher!

The exploration spirit and curiosity of human beings determine our desire and yearning for aliens. Although theoretically aliens may really pose a threat to human beings and the earth, they still can't stop the contact between human beings and aliens. This may be the nature of intelligent species in the universe!

Everything is unknown. Because unknown aliens may bring destruction.

Just as Einstein suggested that American President Roosevelt build an atomic bomb before Germany, he believed that there would be no problem as long as the just side held the power, and he insisted on human kindness. However, no one knows what will happen if an atomic bomb is built, because everything is unknown.

The successful implementation of the Manhattan Project allowed the United States to build an atomic bomb. After Japan secretly touched America's ass, the United States angrily dropped two atomic bombs on Japan, which shocked the world with its destructive power. All countries in the world have started a nuclear race and developed nuclear weapons. Scientists such as Einstein, who are aware of the seriousness of the problem, keep calling on countries to ban the use of nuclear weapons and oppose their development.

The result of contact with aliens is unknown. In the same way. I don't know if there is any advanced intelligent life in the universe, and whether it is excitement or greed to receive the news from the earth. Smart creatures must be selfish. The intelligent life of the universe that can come to the earth may conquer the earth as easily as the atomic bomb was used in the United States. Are there no kind aliens? Kindness is divided into objects. They conquered the earth and obtained resources. Good for yourself, of course. Just like human beings, when competing for resources with animals on the earth, when competing for resources between different races, and when doing experiments with animals, where has human kindness gone?

It is also true that there is danger. Unknown aliens can be dangerous. Just as the United States destroyed the economies of the Soviet Union, Japan, Britain and other countries, all efforts are meaningless in the face of the huge gap between economic and scientific and technological strength. Only when the strength is close can there be equal qualifications, just like the economic war between China and the United States now. Face it squarely, because the strength is the same; Be trampled on because of the disparity in strength.

Whether there are aliens or not, and whether the information sent by human beings to the universe is received by aliens or not, human beings still know very little about the universe. If aliens can come to the earth, the scene may be like that described in the movie Avatar.

So the result of contact can only be described as unknown. Since we don't know, we should prepare for the worst. No contact and no reply may be the reason why Hawking and others suggested that human beings choose this way.

I am FAW. Thank you for your attention. Interesting science stories are around you. Since the development of mankind, the exploration of alien civilization has never stopped, but no news about aliens has been found from beginning to end. As for what alien civilization looks like, we don't know. But if they can get in touch with us, it means that their civilization is definitely above ours.

If the technology level of alien civilization is much higher than ours, and it can easily emigrate in the universe. Then it is undoubtedly very dangerous for us human beings. We don't know whether they are as friendly as we are; So caution is necessary. Especially before we know each other's intentions, if it is the intention of aggression and occupation, our humanity will be destroyed. Of course, this is only the worst, and Hawking and Liu have to consider human safety.

In fact, we know very little about the universe. We know nothing about the existence of aliens. If we receive the news of alien civilization and respond rashly, we will gamble on the whole human civilization. But what is certain is that there are no other alien civilizations in the solar system. So even if there is, it will be difficult to contact because of the distance.