"Ling, look at these beautiful rivers and mountains, how beautiful. Look at the hills, and then you look at the rivers. Like you said, if the elements that make up this world are fixed, then there must be an exact world somewhere in the distant universe, don't you want to look at it? ”

"Yi, of course I want to take a look, everyone will feel visual fatigue in their own city. Who wouldn't want to see their world when others are bored? Maybe there is a windfall, no one knows. For example, does intelligent life have to be in carbon-based form? Or can intelligent life be able to touch and see? Perhaps we live in a great life, and each of our great lifeforms constitutes an infinite universe. ”

"Yes, you're right, then the world of computer simulation is self-defeating. Because if the world exists like a nesting doll, then this ultra-high amount of computing will cause problems for the machine itself, don't you? ”

"Hmm. I'm kind of moved. This world is really amazing, our perception of this world is still like kindergarten, and we may not even be in kindergarten. ”

"It must be a baby, a newborn baby. Do you know dark matter, this stuff fills the universe, but we just can't see it, and we can't capture it. There may also be intelligent life in the dark matter world. And the sun's rays, maybe they're also life. ”

"Dark matter, I know. This thing is so mysterious. By the way, if we can get to know him, maybe we can solve a lot of things. Ling replied.

"Yes, I think that these dark matter may be the projection of the four-dimensional space in the three-dimensional world, or maybe these dark matter are captured, and after research, we may be able to find the secrets of the universe about dimensions."

"You just mess around, how can dark matter have anything to do with the fourth dimension?"

"It's all scientific speculation anyway, exaggerated, no fuss. Don't you see that some people think that this universe is not flat, so it has been discovered that there may be wormholes connecting two space-times, which is theoretically possible, but it has never been confirmed, and there are also a large number of scientific research comrades who agree with it. So I'm not a physicist, but my guess may be valid! ”

"Okay. You may be right, but I don't agree, I'm just like you said, we can guess, but we have to do it on the basis of reality. So everything has to be based on reality. More and more, I feel that the world is really interesting, and every day is a new day. We can travel far to discover extraterrestrial planets, we can also discover extraterrestrial life, we can even drill into black holes to have a look, and finally we can travel through time and space and discover four-dimensional worlds, five-dimensional worlds, and six-dimensional worlds. ”

"Yes, so we have been constantly exploring this world, and this world has good intentions for people who are trying to explore, including you, you just thought that this world was full of bugs, but now you feel that this world is real, we just have to constantly revise our perspective, and after correcting our perspective, we continue to set off again."

"Do you think this is the meaning of our lives? Is it to constantly explore the unknown, so as to understand the world, this universe from the unknown, and then get satisfaction? Ling asked.

"It's probably not satisfaction, it's a sense of mission, it's a sense of mission that all researchers who study the world carry. It is also the driving force for our society to move forward. ”

Then again, if we're not in the virtual, wouldn't we be able to create another universe and then put ourselves in that universe and explore the meaning of that universe? It's better than going on a long trip with your life and money, and if the laws of the world are exactly the same as what we see, isn't it the same way to run the world? ”

"Humans have talked about it a long time ago, the brain in a vat. We can do that, but the sense of purpose that I said earlier means we can't. If all people lie there enjoying the satisfaction that virtuality brings, humanity is not far from extinction. Do you want to live in a world full of lies, or do you want to live in reality? There are unknowns and adventures in this reality, and this unknown and adventure is a test for all people, a test for human society. Everyone is lying flat, so who can make a small contribution to this society, and let human beings understand the unknown distance? ”

"Yes, that's what existence is all about. There will always be someone who will explore this society, explore the world. Ling replied.

"So, if you apply for an aerospace major, or an astrophysics major, in order to let you understand the world and the universe, you may spend your whole life doing nothing, and then repeatedly arguing your hypothesis. But if you succeed once, the world will open a new door. ”

Ling stood up from the grass, his hands spread out to feel the world, to feel the air entering his mouth, flowing through his organs into his lungs, which were greedily enjoying the pleasure of oxygen. Her eyes opened again, and she shouted into the valley, "My life is the sea of stars, and my goal is far away!" ”

Seeing Ling so excited, Yi also silently left tears. From his point of view, this is a curious child, full of curiosity about everything in the world, just like when he was a child, as if he expressed his curiosity about everything in the world to his high school classmates before applying for China Southern Airlines.

"Ling, if one day I don't exist. So will you miss me? ”

"Definitely, how could it not? You are my teacher, a teacher for one day and a father for life. I'm going to miss you for sure. ”

"Ling, I want you to know. If one day I'm gone, you don't have to be too sad, you should continue to complete your goals, your ideals, when you complete the goal, I will smile with satisfaction in the unknown, you don't have to miss me all day, I want you to know, you have to devote yourself to scientific research, you can have an emotional life to regulate the irritability on the road of scientific research, but I hope that my departure can not become a fetter to your scientific research, but what I want you to know is that please complete your ideas, your ideas. You have to finish, you have to reach the goal, the day you get off the boat. ”

"Disembark? I'm not on the boat yet! Yi, I remember your words, thank you teacher. ”

"It's nothing, I'm like this, although I've done nothing in my life, but my ideals, my ideas, I haven't given up, I'm still struggling to explore, although I may know that there is no end to this road, but maybe one day I can complete my goals and ideals."

"Thank you, teacher, by the way, how can we go back, teacher."

"Don't you remember? How did we get here? ”

"I don't seem to remember, I just remember the last time we met was at your teacher's house, and we had a long conversation on the couch. We talked about the world, the universe, and us humans. ”

"Actually, you're in a dream, and I'm virtual, I don't exist." Yi replied.

"Teacher, what are you talking about? So what you taught me before was false? The world, as I perceive it, is virtual? ”

"Can you remember how you got to this mountain? Can you remember how we got to my house? ”

"Teacher, I can't seem to remember, is this world virtual?"

"No, it's not virtual, you're lying in a hibernation pod right now, and your destination is far away in the universe."

"What? Am I not myself? So why do I have a lot of memories with you before? ”

"You've been asleep for a long, long time, it's a dream, and your name is not Ling, your name is Nanjia."

"Nanjia? How do I vaguely remember the name, as if I remember a very large spaceship, and there were many, many of my relatives on the spaceship. ”

"Yes, you're on the Explorer. The next time you see me, you may forget me, but what I want to tell you is that exploring distant places has always been our mission and the hope of the entire human civilization. ”

"Really, will we be able to see each other again?"

"Surely, my dear child Nanjia, you should wake up."

Nanjia opened her eyes slowly, she seemed to have a long, long dream, and in this dream there was his teacher, and his teacher seemed to be very kind to her, like a pair of parents to their daughters. And her feelings are real, Yi is a character simulated by the computer based on the information of his parents, maybe Nanjia may never see her parents again, but in the virtual world, her parents will stay with her until Nanjia gets off the boat and reaches the distance of her destination.

Dreams are a magical thing, and almost all mammals in nature dream about them. Some dreams change the world, for example, Bohr created a model of the atomic structure by dreaming, and Mendeleev discovered the inner connection between the elements through dreaming. And some people dream, as if they foresaw their future in advance, because they sometimes go to places they have never been, but there is a very familiar feeling, and thinking about it may appear in dreams.

The brain-computer interface, on the other hand, is a facility that connects the hibernation chamber through an external interface. Under the condition of long-term hibernation of hibernators, the brain-computer interface will affect the hibernating personnel without changing the subjective consciousness of hibernators. This effect is a fine-tuning of the hibernating people's minds, allowing them to strengthen their personal beliefs and determination to complete the task during the long journey. This is human beings have injected the concept of science fiction into practical action, thanks to the science fiction writer living in the 21st century, without a series of ideas of science fiction writers, some of the current equipment and facilities would not have appeared.

As if in another world, Nanjia Qiming's group of personnel has spent a long, long time. And the Explorer drove smoothly in the dark desert for a long, long time. They were far from their destination, but they were close.