Luo Ji was surprised by Qiao Lu's proposal, and asked suspiciously:

"Can it really be done?"

Qiao Lu didn't answer him directly, but just showed a smile on the other side of the wall, as a hint that Luo Ji cooperated.

That's right, in fact, how to transmit gravitational wave broadcasts, Qiao Lu has not yet mastered.

The use of too much equipment on the Ark had been lost during the long Cybertron Civil War, and even if it could indeed emit gravitational waves, the Wandering Earth would not know how to use it for cosmic broadcasting.

But it doesn't matter, the Wandering Earth has not mastered all the technology of the Ark, and the Three-Body Civilization cannot understand it.

The Ark has only appeared in the solar system for a few days, and the Three-Body Civilization is sure to find out all the details of Qiao Lu and them?

So Qiao Lu didn't say this to Luo Ji, but to Zhizi, who had been secretly observing.

I have the ultimate killer weapon in my hand that can destroy the three-body civilization, do you believe it or not?

is also a wall-facing person, when he saw Qiao Lu's expression, Luo Ji understood what he meant.

The origin of the wall-facing plan stems from a very important point - Tomoko does not understand people's hearts.

Therefore, the Three-Body Civilization needs to select the wall-breakers in the ETO, and use these human traitors to help Zhizi analyze the true strategic intentions of the wall-facers.

It's a pity that now ETO has been wiped out, more precisely, abandoned by the three-body civilization.

So the only people who can hear this conversation are Zhizi, who is always monitoring the earth, and a group of three-body people who are transparent and don't know what conspiracies and tricks.

By this time, words are no longer necessary, and the eyes can carry out all the communication.

Luo Ji finally nodded and said, "Understood, please let me go back and pack up the materials, and I will immediately transfer my work location to this ship." ”

"I'm sorry for you, Dr. Luo Ji." Qiao Lu laughed.

————————————

After returning to Earth, Luo Ji's friend and bodyguard Shi Qiang also learned from him that the spell had taken effect.

This made him very curious, and he couldn't help but ask Luo Ji:

"How the hell did you make such a big star disappear, really just by a spell?"

"You don't believe me?"

"I don't believe it."

"Alright then, I'll tell you."

The two walked to the other side of the road, where the roadbed blocked the lights of the residential area, and it was pitch black all around, and Luo Ji and Shi Qiang groped their way to sit on the sand.

"Let's get started." Luo Ji's voice sounded in the darkness.

"You talk about it in layman's terms, my level of education is complicated and I can't understand it."

"Don't worry, anyone can understand this."

Luo Ji began to narrate: "First of all, we must establish two axioms for the cosmic civilization: First, survival is the first need of civilization. 2. Civilization continues to grow and expand, but the total amount of matter in the universe remains the same. ”

"Isn't this nonsense? Which civilization is not like this? Shi Qiang said disapplausively.

"You are wrong, the second axiom exposes the brutal fact that the total amount of matter in the universe is basically constant, but life is growing exponentially! The exponent is the devil in mathematics, if there is a bacterium in the sea that is invisible to the naked eye, it splits once every half an hour, and as long as there is enough nutrients, its offspring will fill all the oceans on the planet in a few days. For example, at the current speed of human travel, in a million years, the civilization of the earth could crowd the entire galaxy. A million years is just a short time on a cosmic scale! ”

It takes tens of millions or even hundreds of millions of years for biological evolution to evolve, and in geological chronology, a million years is too short, let alone on a much larger cosmic scale.

Shi Qiang immediately reacted and asked, "You mean that the universe has been crowded with life?" Isn't that right? The universe looks empty, except for the three-body civilization, there is no other alien life? ”

"That's what we're going to say next, give me a cigarette."

Luo Ji fumbled for a long time before getting the cigarette from Shi Qiang, and when he heard Luo Ji speak again, Shi Qiang found that he had already sat three or four meters away from him.

"We have to distance ourselves. It's more space-like. Luo Ji said.

Then, he twisted the filter part of the cigarette and lit the cigarette, and at the same time, Shi Qiang also lit a cigarette.

In the dark, two small sparks are far away from each other.

"Okay, to illustrate, now we need to build the most concise model of cosmic civilization: these two Mars represent two civilization planets, the entire universe is only composed of these two planets, everything else is gone, you delete everything around. How's that, did you find this feeling? ”

"Well, it feels like it's easier to find in a dark place like this."

"Now we call these two civilizations your and my civilizations, and the two worlds are far apart, even if it is a hundred light-years away. You've detected my presence. But I don't know the details, and I had no idea you existed. ”

"Hmm."

"Two concepts are to be defined below: goodwill and malice among civilizations. Words like good and evil are not rigorous in science, so their meanings need to be limited: good intentions mean not actively attacking and destroying other civilizations, while malice is the opposite. ”

"That's the lowest kindness, isn't it?"

"Now that you know the existence of my civilization in the universe, consider what options you have for me. Please note that in this process, it is necessary to keep in mind the axioms of cosmic civilization, as well as the environment and distance scales in space. ”

"I choose to communicate with you?"

"If you do, you're going to have to pay the price: you're exposing your existence."

Shi Qiang had already begun to understand a little, and he extinguished the cigarette in his hand, letting this faint light of fire extinguish in the darkness.

"If you're malicious, I'm out of luck, right?"

Luo Ji further said: "Not only that, even if you don't take the initiative to expose it, since you can detect my existence, of course I may find you, from the perspective of technological development, it is only a matter of time." ”

"But I can take a risk to communicate with you, and if you are malicious, then I am unlucky; If you are well-intentioned, then we can communicate further and finally unite into a greater civilization of goodwill. ”

"It's okay on Earth, but not in the universe, and now we introduce an important concept: the chain of suspicion."

Luo Ji said a little tongue-twisted: "If you think I am well-intentioned, this is not a reason for you to feel safe, because according to the first axiom, well-intentioned civilization cannot think of other civilizations as good-intentioned in advance, so you still don't know what I think of you, you don't know whether I think you are kind or malicious; Further, even if you know that I imagine you as well-intentioned, I know that you imagine me as well-intentioned, but I don't know what you think of me, what I think of you, what you think of me······"

"Okay, okay, don't nest dolls, I see what you mean." Shi Qiang hurriedly waved his hand and said.

"This is the third layer, and this logic can be extended all the way forward, endlessly."

"That is to say, whether you or I are a well-intentioned civilization or a malicious civilization, the result is the same?"

Shi Qiang finally understood, but he also retorted: "But what if you are much weaker than me and there is no threat to me, then I can always communicate with you, right?" ”

Luo Ji shook his head and said: "No, this is the introduction of the second important concept: technological explosion." ”

Human civilization has a history of 5,000 years, the history of life on earth is billions of years, and modern technology has been developed in 300 years.

The possibility of a technological leap is an explosive buried inside every civilization, and if there is an internal or external factor that ignites it, it explodes with a bang!

The earth is 300 years, but there is no reason to think that human beings are the fastest developing civilization in the universe, and it may be that the technological explosion of other civilizations is even more rapid.

I was weaker than you, and after receiving your communication, I learned of your existence, and the chain of suspicion between us was established.

During this period, I could have a technological explosion at any time, and suddenly I was far ahead of you and became stronger than you.

You must know that on a cosmic scale, hundreds of years are just a flick of a finger, and I learned that your existence and the information I received from communication may well be the best fuse for the explosion of technology.

So, even if I'm just a baby civilization or a budding civilization, it's full of dangers for you.

Shi Qiang looked at the sparks in the darkness on Luo Ji's side in the distance and thought for a few seconds, and then looked at the cigarette butt he had extinguished, "Then, I can only remain silent." ”

Luo Ji asked rhetorically, "Do you think about this pair?" ”

Finally, Shi Qiang sighed as if admitting defeat: "No, if you are stronger than me, since I can find you, then you will be able to search for me one day, so that there will be a chain of suspicion between us again; If you're weaker than me, but a technological explosion could happen at any moment, it becomes the first case. To sum it up: it is dangerous for me to keep you alive. ”

"That's right, that's why 187J3X1 was destroyed, and the mere suspicion of a possible civilization will lead to annihilation."

Luo Ji threw the lit cigarette butt to the ground and stomped on it, splashing a few sparks from the soles of his shoes.

"Just like what I'm doing now, just as a matter of course."

For advanced civilizations, destroying a star in the universe is as easy as stepping on a cigarette butt.

In order to prevent the possibility of igniting a prairie flame, they didn't mind it.

This is the truth of the spell, Luo Ji's ultimate means to fight against the three-body civilization!

In the end, Shi Qiang only said one word in the dark:

"!"

Luo Ji concluded: "The universe is a dark forest, and every civilization is a hunter with a gun, sneaking through the forest like a ghost, gently brushing away the branches that stand in the way, trying not to make a sound from his footsteps, and even breathing carefully····· He had to be careful, because the forest was full of hunters who were just as stealthy as he was. If he discovers another life, whether it is a hunter or not, whether it is an angel or a devil, whether it is a delicate baby or a faltering old man, whether it is a fairy girl or a godlike boy, there is only one thing he can do: shoot it! In this forest, others are hell, eternal threats, and any life that reveals its existence will soon be wiped out. This is the picture of cosmic civilization, and this is the explanation of Fermi's paradox. ”

Shi Qiang couldn't help but sigh with emotion:

"Black! It's dark! ”

(End of chapter)