After the referendum, Cheng Xin wanted to log on to the knowledge base of the World Academy of Sciences to inquire about the materials and study, but the results showed that the materials were lost.

"It doesn't seem to have recovered..."

It's only been five days since the crisis of the machine.

With nothing to do, she logged on to the forum to see the current situation, and a word on the search recommendation instantly attracted her.

"Dark Forest?"

Cheng Xin clicked into the official live broadcast and found that it was an academic seminar organized by the Kyoto Academy of Social Sciences.

Special guest, Dr. Luo Ji in front of the wall.

The event has been going on for a long time.

"The cost of communication stems from the inconvenience of communication on the cosmic scale, for example, it took four years for the intelligent son of the Trisolaran to be launched into the solar system, and at the same time, it also includes the cost of not being discovered by the observed target, or the risk, because before the observation, no one knows the scientific and technological level of this civilization."

A child who looked like a new generation stood up and said, "Dr. Luo Ji, I would like to add one more point about the cost of communication being greater than the cost of blowing. ”

The child thought for a moment and turned his head to look at the camera: "Shuguang, you are monitoring all mankind, is it real-time monitoring?" ”

"That's a waste of resources, and in general, only key people are monitored."

"Yes, this is also a kind of exchange cost, the universe is very likely to be in a state of war, super civilizations are monitoring each other, based on the principle of limited resources, it is impossible for them to waste limited resources to observe civilizations that expose coordinates, this is far less real than a direct strike, after all, the light particle is a weapon that even insects know the principle, it must be very, very cheap."

Luo Ji pondered for a moment and said, "In other words, the Dark Forest Strike that the Three-Body People are afraid of may just be a normal state and a side of the super-civilization cosmic war. ”

"It's like a sniper in a trench on both sides, or a sniper who is constantly moving position, they shoot at each other, whoever shows their head eats a gun, this..., it's darker than the dark forest..."

In the Dark Forest, people take you seriously and destroy you because they think you might threaten them.

But if it's a cosmic war, you're just a worm that gets crushed to death at will, and people don't care about you at all.

Someone asked, "Now, do we still have a way to expose the coordinates?" Pulling the three-body world to die together, I can wake up laughing in my dreams. ”

The dean of social sciences said in frustration: "There is no chance, only stellar power can make a little sound on the cosmic-level battlefield, it is heard by snipers, water droplets are guarding outside the blue star, and Zhizi is monitoring us, it is impossible for us to create a high-power radar." ”

"Mr. Chen Xi has deprived us of the right to choose, and he is really anti-human this time."

Luo Ji asked the dean: "Someone told me that the destruction of the two worlds requires the joint decision of all mankind, does human civilization really have a high enough degree of deterrence?" ”

The dean shook his head and said, "I don't know, probably, after all, we even thought about blowing up Mercury." ”

"The biggest problem with the sword of all mankind is that there are only two outcomes of pressing the button and not pressing the button, because how high the deterrence of the human group is, it needs practice to be verified, and the consequence of practice is either no deterrence at all, or the immediate implementation of the dark forest deterrent strike."

"Forget it, let's not talk about this, back to the topic, about the existence of cosmic broadcasts and snipers."

The dean of the Kyoto Institute of Physics took over the conversation: "First of all, we can be sure that the coordinates of the human world and the three-body world have not yet been exposed, even if it is an electromagnetic wave of stellar power, it can only transmit a distance of a few light years, and after exceeding, the information will be distorted to the point of being undecipherable, unless the other party has time magic." ”

One student retorted, "That's just a human theory!" Everything has a trace, what if the information can leave traces in space for a long time, as long as you get close enough to find it? It's like Spiritual Realm: Age of Magic! There's a teleportation skill in it that can keep information in space, and the technology of super civilization is no different from magic to us! ”

The dean of physics retorted: "Since the three-body world dares to run to our side, it proves that the coordinates have not been exposed." ”

In the original book, the destruction of the Three-Body World was due to the gravitational broadcast launched by the Gravitational Force, and then, the singer and another unknown civilization noticed human civilization through the Three-Body World.

"The Trisolarans are also insects that are difficult to protect themselves!"

"Don't quarrel, get back to business! Business! ”

"In the universe, broadcasters and snipers may wander around the universe through light-speed spaceships like the Star Alliance, and after discovering the coordinates, they will strike at will to avoid the coordinates of the parent star being tracked backwards."

The director of the Academy of Physics said: "It is impossible to rely on stars for coordinate broadcasting through spacecraft, so they must have a more advanced way of broadcasting, such as gravitational waves." ”

"Gravitational waves are long-range forces that travel very long distances, and we have observed gravitational waves produced by the merger of two black holes 1.3 billion light-years away......"

"If only starship humans had gravitational wave technology, they would be able to carry out deterrence now, and they wouldn't have to run for 120 years."

Human beings do not have the ability to carry out deterrence for the time being, so why don't the Trisolarans dare to pursue?

"It's a pity that in a short period of time, it is impossible for the Star Alliance to make a technological breakthrough, the fleet resources are limited, and the Zhizi blockade is microscopic."

The coalition government can determine that there are at least seven Zhizi in the solar system, and after the water droplets destroy the industry of human civilization, some Zhizi must go to pursue the Star Alliance fleet and maintain the blockade and surveillance.

Otherwise, a technological explosion has mastered how gravitational wave communication has been mastered.

Thinking of the Star Alliance, some people scolded angrily: "This group of idiots is actually engaged in an extremely stupid collective march!" You can't run separately! Do you scatter the sky full of stars? Don't talk about whether the three-body people can catch up, let's talk about such a big goal! What if you run into another civilization's light-speed ship? The universe is big, and the probability is small, but it's not nothing. ”

"Eggs can't be put in one basket, 18 stellar-class formations, each with 169 warships, of which there are twelve supply ships, enough to separate for a light-year class interstellar voyage!"

"The most stupid thing is the expeditionary target, it is actually in the same direction as the Trisolar World, so you are not afraid that the Trimaran Fleet and the Trisolar Mother World will release more advanced warships or water droplets to pursue!"

I said, is there a possibility, in this case, the water drops will not go after the fleet, but directly exterminate the human race, and then let the fleet quickly run over to replenish a wave of supplies and continue to run.

So someone explained: "The speed of the battleship reaches the maximum speed of fifteen percent of the speed of light, and the impact of interstellar dust on the hull is very large, and without the industrial support on the Doji, the battleship may become dilapidated after more than ten years of sailing." ”

"Don't forget, even in the solar system, warships have to undergo a complete overhaul every ten years."

"Due to space capacity issues, each stellar-class battleship has only two sets of redundancy, from acceleration to maximum speed to deceleration to standstill, requiring the use of four sets of fusion engine parts."

There were only three engines on the ship, and two of them had been damaged due to acceleration, and the broken parts would be collected and transported to the Cross Star for recycling.

"If you lose your Star Doji! Stellar-class ships will lose the ability to slow down unless they rob other ships of accessories! ”

"Once separated, a civil war will break out in the Star Alliance!"

"Damn! With the Circumlunar Collider, we could have built more Dojis! ”

"Alas, alas..., excited fart, it's a big deal for everyone to squeeze in, we don't need a complex ecosystem, as long as there are no problems with the nuclear reactor, the artificial starch system can still work, there is enough water and all kinds of salt, we will not starve."

"Look at those heroes floating in the sky, the escape pod with a diameter of twelve meters, the limited space capacity is almost all fuel for deceleration, only ten cubic meters are survival materials, and they can still live for ten years, and this is still without a resource recovery circulation system."