The universe sent back a mysterious signal, and the earth received six identical messages. Liu: Don't answer.

This sentence is basically correct when used in anything. People often have countless desires to explore. After exploring the world, ideal began to explore the mysteries of the universe.

People are full of yearning and imagination for this unknown field, but the universe is mysterious and there are too many hidden dangers for people to avoid.

Just a few years ago, BBC and National Geographic published a shocking report:

A radio telescope in Canada received a mysterious signal from a distant galaxy. Two identical radio pulse signals in this repetitive signal come from the same signal source about 65.438+0.5 billion light years away. Most importantly, this signal was sent six times. "

Who the hell sent this signal? What does this mean? What does this mean?

Some people think that this may be a signal from intelligent creatures, because our radio signals are basically chaotic and unlikely to be the same. Just like today's world, there won't be exactly the same QR code picture. This is because some astronomers boldly predict that this may be a signal from alien creatures.

Many people said that they didn't understand the signal they had just received. Why didn't they answer it? What if the signal is interrupted?

This is actually because Liu mentioned a cold and cruel law-the dark forest law in his novel Three-body. The trilogy of Three-body novels basically revolves around this law.

What is the law of the dark forest? This has to start with a paradox.

When physicist Fermi was studying UFOs and their alien creatures, he suddenly mentioned an incredible question: "Where are they?" The scientific argument derived from this sentence is called Fermi paradox.

Liu thinks that the universe is like a whole dark forest, where there is probably no ideal "hug" for you, but a malicious hunter.

In the primeval forest of the universe, every civilization may be a deadly unknown threat, and the existence of human civilization cannot be exposed without knowing each other's intentions. Maybe we have received the signal of extraterrestrial civilization now, but we haven't got a response.

The story of "Three-body" was opened because Ye, the heroine of the first film, responded to the alien signal from the three-body civilization out of revenge, which triggered an invasion that lasted for 400 years.

In the second part, Luo Ji, a human being, deeply understood the laws of the dark forest, and exhibited the Dark Forest Strike, that is, broadcasting the coordinates of three-body stars to the whole universe.

And this way, just exposed the position of the solar system, and then led to the demise of human civilization, this is a "mutually assured destruction" way, in the end, Luo Ji single-handedly, to prevent the invasion of three people.

In the third part of "Three-body", human beings fall into the routine of "cultural invasion" of three-body people and lose vigilance against them. Under the stupid operation of Cheng Xin, human beings gave up the blow to the three-body and relaxed their vigilance, which led to the three-body invading the earth again.

However, human beings still have no progress, which once again exposed the position of the three-body civilization, leading to the complete destruction of the three-body star, and the entire solar system was eventually destroyed by the civilization named "Singh", so most human beings perished.

This shows that in Liu's view, it is quite dangerous to rashly reply to unknown alien signals.

Humans on earth are like a naive child. He lit a bonfire and shouted, "Come and play together". However, at the moment, the alien is looking at him like an ant. I don't know if you are kind or malicious.

In the end, scientists still didn't respond to this alien signal.

Because from the perspective of game theory, we can't afford to gamble, dare not contact aliens rashly, and can't entrust our own safety to the goodwill of others.

Three-body is not only a great and beautiful science fiction novel, but also has important practical significance.

Liu won the Best Novel Award in the 73rd World Science Fiction Convention Hugo Award for Three-body, which is the first time in Asia.

When I first came into contact with Three-body, I was immediately attracted by the compact plot and the author's extraordinary imagination. The "dark forest law" and "dimension reduction" in the book have completely subverted my understanding of the universe and the world.

Reading "Three-body" seems to have experienced a long history of human development, because the story spans from A.D. 1453 to A.D. 1000 billion years ... From the past to the future, from the body to the mind, not only time, but also space and culture.

In his story, the future technical concepts such as four-dimensional space, frozen sleep, gene missile and curvature drive are no longer obscure, but can be easily understood.

Obama, FaceBook President Zuckerberg, Xiaomi Leijun, 360 Weeks and Tencent Ma are also admirers of "Three-body". In Lei Jun's view, "Three-body" is of great significance to the development of their company. The concepts of dark forest and dimensionality reduction deserve their vigilance.

There are three books in Three-body, namely: Three-body I-The Past of the Earth, Three-body II-The Dark Forest and Three-body III-Death Forever, each of which is extremely wonderful.

The value of this book far exceeds that of a science fiction novel. As Liu said, "Science fiction is not literature". Reading the book "Three-body" is not the same as reading a novel, but it is of great significance to broaden our horizons and even to our values and outlook on life.

A set of three books, just a meal, can let you experience the most intimate masterpiece in the world.