Han Le quickly felt it, this feeling was very strange, so strange that it made him subconsciously wary, but it was definitely not difficult to accept, not only was it difficult to accept, but it was very comfortable—although his eyes were closed, in just a few seconds, the world became even more moving than he had just opened his eyes.

The corners of Han Le's mouth showed a smile, different from the helpless wry smile from time to time when he was talking just now, this was a natural smile, he tilted his head back slightly, completely leaning on Qiao Yiyu's body, through the thin clothes in summer, Han Le could even feel her body temperature: "This feels really ......"

He subconsciously sniffled, imagining the right words in his head, but still failed, just repeating: "What a ......"

"It's wonderful."

After a while, Han Le was looking at his eyes and looked back at Qiao Yiyu: "Isn't this considered drug use?" ”

"That depends on how you define it."

Han Le understood the meaning of this sentence in an instant, anyway, he definitely couldn't be considered 'sucking' in this situation: "Is it addictive?" ”

Qiao Yiyu smiled slightly, Han Le swore that he had never felt in his life that he felt that a person could be as beautiful as Qiao Yiyu was now.

"Everyone is addicted to life...... Yes, depression actually has a lot in common with drug withdrawal. ”

"I'm a little envious of your time...... How nice it is that you can be happy if you want to be happy. ”

"We don't have a chance to use this feature...... Only school teachers and doctors can use ...... I thought you'd resist. ”

"Why resist the system?"

"It's a lot like what you said about drug use."

"It's very similar," Han Le said, "but even if you do make me take drugs, I don't care...... Moreover, this effect does not seem to be as strong as drug use. ”

"This is excitement," Qiao Yiyu nodded, "It's no different from your usual sudden happiness...... But only by unnatural means...... How do you feel now? ”

"Very good...... Very good. Then he suddenly realized something, "Isn't it that as soon as your hand is gone, I will go back to the way I was?" ”

"There's a natural regression process, and your brain also actively secretes some dopamine in response to this stimulus...... It's not going to go away all of a sudden. ”

This is somewhat of a comfort to Han Le, if the emotions are messed up like a machine switch, that person must be crazy.

When Qiao Yiyu's hand left, Han Le was still greedily enjoying every second of precious time, and even every breath involuntarily became heavier, and the air seemed to be sweet: "I finally understand why some people like drugs so much." ”

"The biggest problem with drug use is that it's too direct," Qiao Yiyu cautioned on the side, "It turns life into a simple pursuit of pleasure...... In fact, this is true, biologically speaking, human beings rely on this to get to where they are today, and all human civilization and creation are actually by-products of this process - but the most important thing is precisely these by-products. But drug abuse omits this process, and all the creation, value, and meaning are not comparable to the liquid in a needle, which is unacceptable to us. ”

Han Le looked at Qiao Yiyu in surprise: "Are these words your own thoughts, or are you ...... What was inherent in your time? ”

"Sort of...... "In fact, the more advanced the society, the less space there is for individual thinking, and the smaller the space for creation, because there is more and more knowledge...... In my time, there is almost no such thing as independent thought, because almost all questions, whether in the natural sciences or in the humanities and society, can be answered in history books, and they are all standard answers. ”

"Is there a standard answer to all questions?"

"It should be said that all the questions that can have standard answers, we have found standard answers."

Qiao Yiyu spoke very slowly, but Han Le still couldn't keep up with the rhythm of this information, because these things were too difficult to understand, so he could only subconsciously follow the question: "What about those who don't have a standard answer?" ”

"The answer that there is no standard answer is the standard answer to these questions in itself."

Han Le stopped talking, Qiao Yiyu's answer sounded like a paradox, but if you think about it carefully, it is not, in this sentence, the meanings of the words pointed to by the two "standard answers" before and after are obviously different, the former standard answer refers to the optimal answer in the usual sense, the correct answer, and the latter standard answer refers to the standard answer, and the standard is an adjective. If it weren't for the fact that he went to the library and read a little book when he was in college, Han Le really couldn't understand it.

"Can you understand?" Qiao Yiyu was surprised.

"It's not hard to understand."

"I always thought you would argue that knowledge is an infinite system, and the more you know, the more you don't know."

"Have you ever said that to anyone else?" Han Le was also strange.

"In the past, when the Internet did not have a real-name system, I said it anonymously on the Internet...... That's what most people answer. Saying that, Qiao Yiyu shook his head, "People are eager to communicate and be understood, and I can't be exempt from vulgarity...... Going back to the question just now, why do you think knowledge is infinite? ”

"Then you might as well ask the other way around, and perhaps it would be better to answer a little bit, why is knowledge infinite?"

"I remember a person on the Internet refuted what I said, he said that he used pi as an analogy, because pi is infinite, even if there is an advanced computer, it is impossible to know what the last digit of pi is, so knowledge is infinite."

Han Le couldn't help laughing, laughing from the bottom of his heart, because he found that many of these issues had been discussed with Xie Yongqing before, and this discussion also formed a consensus in the end, but he didn't directly say the conclusion, but wanted to hear Qiao Yiyu: "Then he is confusing the concepts of knowledge and information...... Of course, in fact, no one really defines these words strictly, but since it is a discussion, it must be agreed that the reason why most of the discussions on the Internet are inconclusive is because the boundaries of many terms and concepts in life are blurred...... How did you refute him at the time? ”

"I didn't refute ......," Qiao Yiyu said, "I said this at the time to vent...... It's like going back to the Middle Ages, and you don't talk to anyone about the Big Bang, maybe just whisper a few words about the earth revolving around the sun in a tavern when you listen to people talk about the sun......"

"That's true." Han Le felt the same way, and couldn't help but pat Qiao Yiyu's shoulder, and after realizing the gaffe, he was also startled by himself.

But Qiao Yiyu didn't mind, and just continued to return to the topic just now: "The definition of knowledge has also produced a discipline in history, which almost belongs to the category of philosophical epistemology, and one of the most important concepts is independence...... Let's put it this way, 1+1 equals 2, which is a knowledge, and 1+2 equals 3, which is also another knowledge, but once the rules of addition are summed up, these cannot be called knowledge, because they are included, they are no longer independent individuals, and in the face of the axioms of algebra, the rules of addition cannot be called knowledge, because it is also included...... Following this line of thought, what can finally be called knowledge is actually the axioms that can no longer be summarized and analyzed, and it is these axioms that form the walls of our understanding of the world. We only call this kind of wall knowledge, and what is inside the wall is only information, and knowledge also belongs to information, and belongs to the kind of information that is the most independent and generalized. The concept of pi is knowledge, but the content in it is not because it is included in this concept. ”

To be honest, Qiao Yiyu's explanation was much more written and systematic than what Han Le had talked to Xie Yongqing before, but he was not surprised, thinking about the miracle that Qiao Yiyu had shown, he could accept anything. But the question remains: "According to you, knowledge is limited, which means that the world surrounded by walls is closed?" ”

"It's complete." Qiao Yiyu corrected.

"Has it been proven?" Han Le still couldn't believe it, this conclusion meant too many things!

"No," Qiao Yiyu smiled, "There is no way to prove it, think about it, knowledge itself is made up of axioms, and there is no connection between any two axioms, otherwise it can't be called independent...... In fact, speculation about the completeness of a knowledge system is actually an axiom, a logical reversal to the effect that if the knowledge system was incomplete, then there would be no such result, and the only explanation is that it is complete. ”

To be honest, Han Le didn't understand, he was a little confused, but I have to say that it feels pretty good, it's the feeling that he seems to understand something, but if you think about it carefully, you don't understand anything - in other words, it's okay to say that he was fooled.

Qiao Yiyu explained: "Let's put it this way...... Do you think that of all the phenomena that we can observe, are the laws that affect them finite or infinite? ”

"Of course it is finite, and if the law is infinite, what is the difference between it and no law? Also, the law of infinity should be a paradox, because infinity represents all possibilities, then there must be contradictory laws among these possibilities - for example, 1+1 must be equal to 2, and it must be equal to 3......"

This is the first and most important step of the inference, which in itself can almost be regarded as a truth, and the most important part of the complete system, then it is easy to understand, finite laws, finite phenomena, this is like a three-dimensional space, all the walls are glowing, each wall emits light in a different color than the others, we don't need to know what light red and blue will become, that is, we don't need to know how these laws interact with each other, We can only see the results of these lights, but we only need to guess the finite number of walls based on the finite color of the light, and the closure of these walls from the absence of any areas in the room that do not have any light effects. (This logic is not very rigorous, just the words of the novelist, I hope the reader will not pursue it).

Han Le still didn't understand, but he also gave up his intention to understand: "Although I didn't understand, I understand what you mean, that is, the world is actually limited." ”

"Yes, and what we can know is more limited."

Han Le didn't care about this: "What about your era...... Do they all rule the universe? ”

"It's not that much," Qiao Yiyu said, "and I'm still in the solar system." ”

"I thought technological progress was exponential...... Han Le shook his head, "but you said that knowledge is limited...... That means that the speed of light can't be broken? ”

"The reason why laws are laws is because they can't be changed," Qiao Yiyu nodded, "but this era seems to feel that everything can be surpassed." ”

"We live in an era where technology is rising rapidly, so hubris is inevitable." Thinking about this question, Han Le couldn't help but feel melancholy, and still said a little unwillingly, "I thought that the laws we know now will find that these laws are only part of the larger laws in the future, just like the ancients thought that it was impossible to ...... heaven."

"A lot of people have this idea...... This kind of rhetoric is even in our time, they feel that what we have discovered at the moment is not worth mentioning, that we can never get in touch with the real laws, that is agnosticism, they feel that everything is absolutely mysterious, and in the face of absolute mystery, any achievement can be reduced to a small part of insignificance. ”

Han Le had nothing to say.

Qiao Yiyu couldn't stop, and finally found an audience, if he didn't say it now, he might not have a chance to say it for decades in the future: "Even in our time, the content of learning still has Newton's laws, and even the meaning of the letters in it has not changed, there is still the theory of relativity, and 1+1 equals 2 is still valid...... Human beings have made mistakes in cognition, but it does not mean that they are all mistakes, standing in your time and looking back, I may feel that it is difficult to achieve such an achievement, but standing in my time, all this is inevitable, the progress of the entire human civilization, just like an ordinary person waking up in a room, at the beginning, he did not know that the room had a switch, everywhere was dark, full of imagination about the room, but as long as he found the right way, as soon as he turned on the light, in fact, everything was clear, this turn on the light, Seeing clearly that the whole process is almost a moment in relation to the whole history, and you are living in this moment. ”

"Whether it is for individuals or civilizations, ignorance, learning and exploration based on ignorance is not the most unbearable, the most unbearable is the boredom and tedium after seeing everything clearly......" Qiao Yiyu said as she spoke, stopped, and then realized, "Am I talking too much?" ”

"No, I'm glad you can say this to me," Han Le said, "In my imagination, your life in the past 35 years should be like a little dragon girl, hidden in the city...... Now you give me the feeling of being a man of an era. ”

"I've lived in this era for longer than I did, and to be honest, sometimes when I'm in a daze, I feel like I'm not really coming from the future...... Isn't it that my first twenty years of life were a dream? ”

"Don't talk about you...... I now feel like it was a dream 35 years ago. ”

"Han Le," Qiao Yiyu stood up, made a Western classical curtsy, and put a hand in front of him, "Do you know how to dance?" ”

"No," but Han Le directly held his hand, "But you can teach me." ”

In fact, Qiao Yiyu is not very good, she just watches a lot on TV, but she has a good learning comprehension, and she is very good at following the rhythm of others, but Han Le is not good, just like a spinning top that is pumped by Qiao Yiyu, passively spinning, but he is not as nervous and embarrassed as he imagined, but he doesn't want to do anything, he just steps on the rhythm and moves, and the movements must be ugly, but now Han Le doesn't care, as long as he is happy.

After just five or six minutes, Han Le was sweating, and when he sat on the stool again, he took the initiative to say his previous thoughts: "If I can, I want to hibernate early." ”

Qiao Yiyu didn't ask him why, just nodded: "Okay, then tomorrow, I'll pick you up at the hotel at noon." ”

"I'll wait for you at home, I'll go home later."

Qiao Yiyu shook his head: "No, if you want to change places this time, your community may be demolished, it's too old." ”

"I'll listen to your arrangement."

At this time, the sky was lit up with fish belly white, unconsciously, a night passed like this, the two of them randomly chose a high-rise building by the square, after entering, the elevator pressed the top floor, and watched the sunrise in the distance through a wide glass curtain wall, when the sun jumped out completely, Han Le didn't know why he sighed: "I don't know how many years it will be to see the sunrise next time." ”

Qiao Yiyu didn't answer, she also didn't know when the next time she would meet Han Le, before coming here, she had also made a bunch of plans for herself, these plans were accurate to the year, month, and even day, including what important historical events she wanted to participate in and what life she wanted to try...... But after a few years of actually staying here, she realized that her previous plan was a pile of waste paper. In the face of time, she, like Han Le, can only passively bear it.

She suddenly remembered something that she had forgotten to say before Han Le's hibernation last time, but it was necessary: "Han Le, let's leave a contact information, if you wake up next time you don't know about it, or for other reasons, you wake up and find that you can't see me, we can also get in touch." ”

Han Le was a little surprised: "Will that happen?" Didn't you say you were the only one who could help me get back to hibernation? ”

"Hibernation technology will soon become a reality, maybe ten years, twenty years, if this technology appears, I will transfer you in as soon as possible, and if you are alone at home, there are too many unexpected factors."

"Contact...... Is it possible to have a website? This was the first thing that came to Han Le's mind, and this was also the most reliable way he could think of to preserve information.

"Okay...... I'll go back in the evening and sign up for one, as long as we keep giving money. ”

(If you have a commuter pass, you can give a few if you can)