Someone can't help but feel guilty in the back of their hearts. Hurriedly changed the topic, returned to his original destination and said: "I do have some experience and some questions in my research this time. I'd like to ask Lord Wadwo. ”

The named Bailu put away the screen of the Water Mirror Technique, faced Lin, shook his head, snorted, and said, "If there is any problem, please ask." "For this man, his strength is very weak in the eyes of Waldwo, and even the children of the tribe can't win. But he was quite favored by His Majesty the Demon King, and he didn't even dare to ignore it.

Not to mention that he was almost demolished by His Majesty the Demon King before, but it was only by relying on this man to come forward that he escaped. It would not be naïve to think that the strongest warrior in the tribe, Thor, would fly after a few moves, and this man has the strength to win the Demon King.

Today, since he asked a question, His Majesty first showed an attitude of interest, and of course Waldwo had to listen to it. This man also spoke about his observations and discoveries during this period of time. At last, he asked, "What do you think, Lord Wadwo?" ”

But after listening to the man's words very seriously, Wadwo said, "Well, I only have one question, what is dimension? ”

A very powerful rhetorical question instantly made a man's face freeze. The feelings said that the experience report just now was foaming at the mouth, and the result was that all of them couldn't play the piano to the cow.

Lin struggled to turn his stiff neck to look at the lich who had been working with the beast for days. I want to say something, but I just can't say it, for fear that as soon as I open my mouth, I will do all kinds of things. Take a deep breath, you are very cultivated, and you are not worth being angry with a tree.

As if sensing someone's imminent madness, Fen playfully stuck out the tip of her tongue and said, "I forgot to teach first." ”

"Someone doesn't learn the most basic math and just learns programming. What's more, the algorithms you are using in predictions are all mathematical...... Are you doing what I'm talking about? ”

With someone's last sudden questioning, the eyes of a person and a deer drifted out, which only made Lin Da feel bad. Immediately wanting to ask what the hell they were doing, Fen took the first step, pretended to open the water mirror screen, picked a file and threw it to Waldwo, and said, "This is mathematics, it is my experience from the basics to the present. Take a look at it, and ask if you don't understand. ”

seems to collude, one person, one deer, one partner and one singing, and Lin is not given a chance to interject at all. Bailu sat on the ground with his buttocks, opened the screen of the water mirror technique, and the words flowed upwards like a waterfall against the current. After a while, at the end of the page, Wadwo shuddered, snorted again, and said:

"The world I see is what it looks like in your eyes. I've always wondered why most of the wood elves, or other Homo sapiens, can't touch what I see. I thought they were too weak, but in fact there were some strong people who even I found intractable, and they were in the same situation, and they couldn't see what I saw. On the contrary, some magicians can spy on a small part, and these magicians are not necessarily staggering powerhouses. It's just that there are some worlds that I can only see, but I can't touch. But as you mentioned, the high-dimensional world that I can see and touch doesn't seem to be the same; And I'm growing towards a high-dimensional world and so on. But why do the magicians who study me always find teleportation array magic in me, or some ...... Well, what's wrong with you? ”

I'm so tired. Lin moved to a corner of the tent, and put the pillar on his head to set up the tent, and did not want to see anyone. One second ago, he was still a math novice; In the next second, I can already understand the theory that I haven't fully understood yet.

"Alright, don't be discouraged." With a hint of a hint of laughter, Fen came to the man's side and said, "If you have time to be depressed over there, why don't you explain to us whether what you observed is correct, or whether the magicians are right." ”

Turning back helplessly, the little self-esteem that was left had already been completely shattered. Now looking at the two people looking at them with hopeful eyes, Lin thought for a while, and decided to come up with the most commonly used example to explain. He took out a piece of paper from his bosom, laid it on the ground, and took out a quill and dipped it in ink, and then dotted a dot on each end of the paper, and asked:

"We know that there are two dots on this piece of paper, what do you think is the shortest distance between them?"

To this extent, Fen felt that she was being insulted. Still, she said the answer earnestly: "The shortest distance is, of course, a straight line between two points." - "At the same time, with a finger hook, the ink on the tip of the pen jumps out like a water snake and finally lands on the paper. It is a straight, unskewed line between the two points drawn by Lin, "and according to your weights and measures, the distance between the two points is centimeters." ”

Seeing what Fen said categorically, Lin looked at Bailu and asked, "Is this also your opinion?" ”

Let's not say if it's because of fear, so no matter what it is, whether it's right or wrong, always follow in the footsteps of His Majesty the Demon King. But the question raised by Lin believes that the answer of the demon king is already the most perfect answer, and there will be no better one. So he nodded firmly.

"You're all wrong."

Lin's words undoubtedly made everyone feel unconvinced. The white deer ploughed the ground with his front hooves and snorted; Fen crossed his hands on his hips, waiting for someone's explanation. If it was too far-fetched, she would not have stopped.

I saw someone pick up the paper and fold it in half. After touching the two dots together, pierce the quill tip through the two dots on the paper. "The shortest distance is no distance."

"Huh~!" One person and one deer looked at this cheating game, first exclaimed, dumbfounded, and then seriously pondered. In fact, there are many things that they have long understood, but they have not connected them together. At this time, as long as someone breaks the layer of window paper, many things will be clear and clear. But, why?

Lin continued: "This has a physical name, the Einstein-Rosen Bridge. "Putting down the paper, I used a whiteboard pen to simulate a star, and changed its presentation as the narration went." When a massive enough star reaches the end of its lifespan, it burns itself out and begins to collapse inward because it cannot resist its own gravity. At this time, the heavy elements inside will increase due to the increasing pressure, and after crossing the boundary point, they will re-burn and cause expansion in an instant, at which time a supernova explosion will occur. At this time, after the second combustible element is burned, the phenomenon of inward collapse does not stop, and it will continue to shrink its size. Mathematically, there is a number of 100 that decreases by 1 over time. But 0 is not the end, when it crosses 0, it becomes negative, and then continues to subtract by 1. When the star that has undergone a secondary explosion shrinks due to gravity, it will break through the boundaries of its existence in space and begin to continue to twist 'inward'. ”

A passage that is not difficult to explain for older children who have some understanding of geophysics. Because even if you can't gnaw on the difficult physics textbooks, in various science fiction and dramas, this can be regarded as a bad theme. But Lin still left some time for one person and one deer to think, and drank some water by the way. When their attention returned to themselves, they continued:

"This one that is constantly twisting inward and devouring matter is what I call a 'black hole'. Where did the devoured go? ”

Lin showed the pierced piece of paper again. On one side, the nib penetrates through the hole and sinks into the flat surface of the paper, and the nib is not visible. If you turn it over, you can see that the tip of the pen is piercing through the hole, but you can't see the body of the pen.

"If there is in, there must be out. At the other end of this twist, is there some 'white hole' that spits out something? Eventually, it became such a phenomenon. Using a whiteboard pen to draw a three-dimensional picture of a quill and piercing paper in the air, Lin then turned the paper from folding in half to flattening, but kept the body and tip of the pen on their respective planes.

And control the quills in and out, so that they extend and retreat in their respective planes. Although the quill is divided into two parts on a flat paper, it is not that the broken pen is in two places, but that it is still connected to each other in two places at the same time.

Lin then showed some classic GIFs that simulated high dimensions, and concluded: "When the dimension of things increases, some things that seem impossible to us will become taken for granted." The shortest distance in a two-dimensional plane can be distorted to a shorter distance in a three-dimensional world, or even zero. In the same way, when we can get in touch with the world of higher dimensions, things that seem impossible in three-dimensional space are actually not so difficult. Therefore, it can be said that teleportation is only one of the most superficial mysteries of the World Tree. ”

In other words, the bigger secret of the world tree is actually related to contact and delving into higher dimensions. Does this have anything to do with what you mentioned about Waldwo seeing that the world he touches is not equal? ”

In response to Fen's question, Lin used that simple metaphor to explain: "I'm not sure what the 'world' that the World Tree can observe looks like. But I'm guessing that it doesn't feel like being able to see the sky, but it doesn't mean that you're above it. If you want to go to heaven, in addition to having a goal, you must also have a method. For Lord Waldwo, there should be no doubt that the goal is to see those high-dimensional worlds. The question then is how to get to those worlds. ”

Hearing that it was related to himself, Bailu raised his head, straightened his ears, and waited earnestly for the follow-up. The people who originally planned to stop there, seeing Bailu's appearance, thought that now they were under the fence, and it was impossible to say that any achievements would have to be hidden. Although those ideas are just speculation, not to mention that I came to them today just to brainstorm and discuss a feasible direction.