Zhang Yuan recalled the past and suddenly discovered that in fact, every progress of civilization came at the expense of some people.

The two chatted about the black technology that once appeared, in addition to nuclear weapons, addictive drugs, and the virtual world, there is actually a black technology that has been ignored by human beings, that is, toxic fuel.

What is Toxic Fuel? That is, the propellant of the rocket, if you only look at the chemical principle, the most ideal is fluorine fuel, such as fluorine and hydrogen reaction to produce hydrogen fluoride, which releases a large amount of energy.

But this thing is highly poisonous! Skin-to-skin contact with tens of milligrams requires amputation, and hundreds of milligrams are directly unsalvageable, and you can prepare for the future.

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

The size of the Saturn V can serve humans with a pot!

Organics such as pentylborane and methylmercury are also often used as fuel additives. According to the early design, hydrazine fuel was to be used in conjunction with mercury, and the fuel used to launch a rocket could pollute a province if it leaked.

So, why do such a dangerous thing? Because without these things, the rocket does not have enough thrust and cannot go up at all.

In the seventies of the twentieth century, it was a time of competition and a bit of sadness, when people launched rockets in fear of causing massive pollution if they failed.

Fortunately, mankind has gone through the most dangerous time, and space technology is also developing from generation to generation, and toxic fuels have long been abandoned and turned into hydrogen and oxygen fuel.

Even rocket technology is slowly being abandoned......

The emergence of the curvature engine has made it logical for human beings to move towards a higher sky and become a real fourth-level civilization.

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

No, it's already embracing the future!

A new era is slowly pulling out......

……

With the birth of curvature technology, human footprints have been scattered all over the corners of this planetary system within a few years!

In the past, it would have taken several years to get from one planet to another with the slow ion engine, and it would have been impossible to explore every planet here for hundreds of years.

Thanks to new means of transportation, there have been a large number of explorers in the human community who have sought out the best of this planetary system.

For example, a large comet called "Bari Baga Bar", which is made of rocks and ice cubes, is like a huge milky cake, especially on the side facing away from the sun, and is as steep as a pink cake!

There are many young people who like to climb on top of the "cake cutting" and take pictures.

There is also a planet called "Medalas", which has a very strong magnetic field, and the solar wind blowing from the star often marks a brilliant aurora above its atmosphere.

Humans don't really plan to settle in this place for long, so most of the planets will not be developed, but provide a natural place for these travel enthusiasts to explore......

“…… Please note that we are now at the site of the Second Branch of the New Humans. Please put on your spacesuit and get off the ship in an orderly manner. ”

This is the planet that was once selected by the branch of the Brilliant Galaxy. Since 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 changed to a planet.

Humans live on one side of the planet, and the site of the original second branch, on the other side of the planet, has slowly become a tourist mecca.

Here, people can see these dilapidated ruins with their own eyes and experience the stories that once happened.

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

"Did you ever think this would happen at the time?" Lin Xuanxuan saw the devastation and asked in a low voice.

Zhang Yuan was stunned, "What if you expected it...... The power of an era does not change because of predictions, but what should happen will still happen. But now that it's going to be good, we're going to have to look forward. ”

Lin Xuanxuan asked a little suspiciously: "Since you expected this possibility, why don't you take some plans to stop it?" Did you already expect it to happen? ”

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

Most of the people who come and go around the neighborhood are middle school and elementary school students, and many of them are excited to walk out of the school gate for the first time. But when they walked into the ruins, they didn't dare to speak out.

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

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

"Why......" Zhang Yuan thought for a while, "At that time, a few of our old guys combined, and suddenly found that no, human beings will fall part...... Later, I found out that this is actually better, not a big deal. ”

"First, you see, our population has swelled to 100 million, and with this incident, this 100 million population has become an ideologically upward high-quality population."

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

"Second." His voice became a little hoarse: "In the future, this group of people will have a higher probability of passing the transcendent assessment. Even if it's one percent, there are a million transcendents, which is really good. ”

"So, if this thing doesn't produce the best, it will come into being...... There is always someone to light the way ahead. Level 4 civilization is far from the point. ”

Lin Xuanxuan stopped speaking for a while, but just sighed.

The site was not deliberately repaired, and it was left to decay slowly, with more and more dust, more and more rust, and the few electric lights that were left were quite dim.

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

Teachers are handing out clean-up kits for them to clean up.

There is also a hibernation chamber in front of it, and there is a lady frozen in it like this, like a sleeping beauty, with a faint smile on her face. It was written in her will that she was placed here voluntarily to provide a lesson for future generations. She's a good guy and a bad guy.

When a child sees these eternal hibernators, he is genuinely afraid......

It's really scary, out of instinct.

"She will never wake up, it's like she's having a beautiful dream......," Lin Xuanxuan said a little sadly, "What is people's self-awareness?" ”

"It should be a kind of randomness that can create information...... Zhang Yuan, as an expert in this field, has his own explanation: "Pure information does not create more information, and the generation of information must come from real reality." ”

And randomness, which is a way of generating information, is a kind of truth. Self-consciousness must be combined with existing information in order to give birth to truly human information. ”

"So, after losing her will, the person looks like she is in a vegetative state, because her brain can't create more information of her own."

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

Zhang Yuan paused, and then said: "Now the Unreal Lab is trying to study a kind of pseudo-randomness, that is, installing a part of the robot software into the human brain. ”

"When the time comes, these vegetative people will be able to 'resurrect' again, they can run, they can jump, they can talk and sing. But they are all weak artificial intelligence without randomness, and humans cannot distinguish between them under normal conditions, referred to as pseudo-humans. ”

Lin Xuanxuan couldn't help but shudder, instinctively having a psychological attack in the uncanny valley, looking at her husband, like a mad scientist.

This kind of research ...... Of course, there is a meaning.

She patted Zhang Yuan, and the power armor made a soft "clang" sound, and asked, "Could it be that you are the legendary ...... Pseudo-human? You have to tell me, how can I tell if it's a real person or a fake person who sleeps with me? ”

"It's a pseudo-human, really, I've already used the first generation of high-tech!"

Zhang Yuan felt that his joke was a bit excessive, so he hurriedly ran away......