When Zhang Yuan recalled the past, he suddenly realized that every progress of civilization was at the expense of some people.

The two talked about the black technology that once appeared again. In addition to nuclear weapons, addictive drugs, and virtual world, there is actually another black technology that has been ignored by humans, that is - toxic fuel.

What is a toxic fuel? That is, the propellant of a rocket. If you only look at chemical principles, the most ideal is fluorine fuel, such as fluorine reacting with hydrogen to form hydrogen fluoride, which releases a large amount of energy.

However, this thing is highly toxic! It takes several dozen mg of skin to touch, but hundreds of mg are out of help. You can prepare for your funeral.

The fuel of Long March 5 is about 800 tons. If it is fired once with fluorine, it can kill hundreds of millions of people if it is accidentally leaked.

The size of Saturn V can bring humans together!

Organic substances such as pentborane and methylmercury are also often used as fuel additives. According to early design, hydrazine fuel should be used in conjunction with mercury. The fuel for launching a rocket once will be polluted if it leaks.

So, why do you need to do such dangerous things? Because without these things, the rocket's thrust is not enough and it cannot be reached at all.

In the 1970s, it was such an era of competition and a bit sad. Everyone was terrified to launch rockets, fearing that large-scale pollution would occur after failure.

Fortunately, humans have tremblingly passed through the most dangerous time, and aerospace technology has also been developing from generation to generation. The toxic fuel has long been abandoned and turned into hydrogen and oxygen fuel.

Even the Rockets technology has been slowly abandoned...

The emergence of the curvature engine has made humans naturally move to a higher sky and become a true fourth-level civilization.

Zhang Yuan looked at the starry sky in the dome of the cafe and stretched lazily, as if embracing the future.

No, I am already embracing the future!

A new era is slowly drawing the prelude...

...

The birth of curvature technology has allowed human footprints to spread all over the corners of this planetary system within a few years!

If it were in the past, it would take several years to go from one planet to another edge planet with a slow ion engine. It would be impossible to explore every planet here without hundreds of years.

Thanks to the new type of transportation, a large number of explorers who yearn for distant places have appeared in the human community, and they have found the best scenery of this planetary system.

For example, a big comet called "Baribaga Bar", it is composed of rocks and ice. Its color is like a super-large milky yellow cake, especially the side facing the sun, steeply like a pink cut cake!

Many young people like to climb on top of the "cut cake" to take photos.

There is also a planet called "Midalas", which has a very strong magnetic field. The solar wind blowing from stars often draws brilliant aurora above its atmosphere.

Humans actually do not intend to settle in this place for a long time, so most planets will not be developed, but provide these travel enthusiasts with a natural place to explore...

"...Please note that the location we are now at: the second branch of the New Humanity. Please put on your space suits and get off the spaceship in an orderly manner."

This is the planet selected by the Brilliant Galaxy branch. Because the gravity environment of this planet is similar to that of the earth, it will be more comfortable for humans to live on it, so the base camp of the entire new human civilization has long been replaced with a planet.

Humans live at one end of the planet, and the ruins of the original second branch, at the other end of the planet, gradually become a tourist holy place.

Here, people can see these gradually decaying sites with their own eyes and experience the stories that have happened.

Zhang Yuan and Lin Xuanxuan took advantage of the rare holiday to come to this human site.

"At that time, did you think this would happen?" Lin Xuanxuan asked in a low voice when she saw the devastated eyes.

Zhang Yuan was stunned, "So what if I expected it... The power of an era will not change because of predictions. What should happen will happen. But now, the result is already good, we must always look forward."

Lin Xuanxuan asked a little suspiciously: "Since you expected this possibility, why not take some solutions to prevent it from happening? Have you expected it to happen?"

Zhang Yuan shrank his neck and sighed: "To put it bluntly, the decline of a human branch is not meaningless..."

Among the people coming and going around, most of them are middle school students and elementary school students. Many of them are very excited when they walk out of the school gate for the first time. But when they walk into this site, they dare not speak out.

His voice gradually lowered: "It will only make us move forward more steadily."

"Why? Can you tell me?" Lin Xuanxuan knew that her husband was the kind of person who was very cruel to big things. Most of the time he was very friendly, but for a small part of the time, life was just a number for him.

"Why..." Zhang Yuan thought for a while, "At that time, we two old guys decided to do it and suddenly realized that no, human beings would fall into depravity... Later, we found out that this is actually better, it's no big deal."

"First, you see, our population has expanded to 100 million. With this happening, this population of 100 million has become an ideologically upward high-quality population."

"This kind of high-quality population cannot be produced by just education."

"Second." His voice became hoarse: "In the future, the probability of passing the Extraordinary Assessment will be higher. Even if it is one percent, there will be one million Extraordinary Assistants, which is indeed very good."

"So, if this matter is not produced, it will happen if it is produced... There is always someone to illuminate the road ahead. Level 4 civilization is far from the point of view."

Lin Xuanxuan stopped talking and just sighed.

This site was not deliberately repaired, and it was left to be destroyed and decayed so slowly. There were more and more dust and rust. The only few electric lights were quite dim.

This is the first time that children have felt this power that comes from time.

Teachers are distributing cleaning tools to clean them.

There is also a hibernation warehouse in front of me, and a lady is frozen inside like this, just like a sleeping beauty with a faint smile on her face. It is stated in the will that she voluntarily placed here to teach later generations. She is a good person and a bad person.

When children see these eternal hibernators, they feel real fear...

This is really scary, beyond my instinct.

"She will never wake up, it's like she is having a beautiful dream..." Lin Xuanxuan said with a little sadness, "What exactly is human self-awareness?"

"It should be a randomness that can create information..." Zhang Yuan, as an expert in this field, has his own explanation: "Simple information will not create more information. The generation of information must come from real reality."

"And randomness, that is, a way of generating information, is a reality. Self-awareness must be combined with existing information to give birth to real human information."

"So, after losing her will, this person looks like a vegetable, because her brain cannot create more information of her own."

"Stochastic is a kind of reality, so we now believe that the virtual world is also real, so it can give birth to new life."

Zhang Yuan paused for a moment and said, "Now Unreal Laboratory is trying to study a pseudo-random, that is, installing part of the robot software into the human brain."

"At that time, these vegetatives will be able to 'resurrection' again, they can run, dance, and speak and sing. But they are all weak artificial intelligence without randomness, and humans cannot distinguish under normal conditions, referred to as pseudo-humans."

Lin Xuanxuan couldn't help but shivered. The instinctive uncanny valley psychological attack occurred. Looking at her husband, she looked like a mad scientist.

Of course, this kind of research has significance.

She took a photo of Zhang Yuan, and the power armor made a "bang" sound and asked, "Are you a legendary... a pseudo-man? You have to tell me how to distinguish whether the one who slept with me was a real person or a pseudo-man?"

"It's a pseudo-man, really, I've used the first generation of high-tech!"
Chapter completed!