Enki continued, "Regarding the folding house, I tried to explain the four-dimensional space in a language that I could understand:

I drew a line segment on the blackboard, pointing to the two points at the beginning and the end, and said, "One-dimensional space, the concept of only length, just like this line, only length, no width." ”

I asked him, "Can you find another point on this line, in one-dimensional space, so that the distance from this point to the ends of the line you started drawing is equal and equal to the length of that line segment?" ”

He thought for a moment and said no.

I drew a little bit more and said, "To find this point, you have to do it in two dimensions, that is, on a plane, and these three points form an equilateral triangle." Two-dimensional space has the concept of length and width, but not height. ”

I went on to ask, "Can you find another point in two-dimensional space so that the distance from this point to the three points of the triangle is equal and equal to the distance between the three points?" ”

Naturally, he replied no.

I put my index finger in front of the blackboard and gestured, "That's about the point, but for the sake of description, I'm going to draw a three-dimensional figure on a flat surface." ”

"These four points make up the tetrahedron. This is three-dimensional space, which is the space we know, which is made up of length, width and height. ”

"Then the question continues, can you find a point, to these four points ......"

Before I could finish describing the problem, she replied: No!

"Yes, no, we can't conceive of a point to A, B, C, D at an equal distance and equal to the distance between these four points. So this point exists in the four-dimensional space. ”

I continued to ask, "What are the characteristics of the four-dimensional space?" ”

I erased the tetrahedron from the blackboard and drew a box with a few dots in it.

"It's a closed box of two-dimensional space with a few people in it. If these people are two-dimensional people, can they come out of the box? ”

She first said yes, and I reminded her that this is a two-dimensional person, and there is no concept of height. She thought for a moment and said, no.

I continued, "Then if there is a three-dimensional person among these people at this time, like us. "I pressed the chalk in my hand into the box and pretended it was a person," he walked to the edge of the box and stepped out with his leg raised. As I spoke, the chalk in my hand swiped to the edge of the box and jumped out of it.

"To those two-dimensional people, this person walked to the wall and suddenly disappeared."

"So if our classroom is a fully enclosed room with no doors or windows, can you get out?"

No.

"Yes, you can't, and neither can I. But if there is a four-dimensional person at this time, we can see him walk to the wall," I said as I walked to the wall, "'Whoosh,' the person is gone." Where did it go? ”

Oh~ He went through!

"In our opinion, it's wall-piercing."

"Let's go back to the question at the beginning, folding houses." I took a piece of paper and said, "This piece of paper is a house in a two-dimensional space, in a two-dimensional space, can you fold it up?" "The egg hurts

He also took out a piece of paper, shook his head and said, "No."

"What about in three-dimensional space?"

He folded the paper in half in his hand: Of course!

Can our room be folded? ”

I know! It can't be folded in three-dimensional space, but if it's in four-dimensional space, it can!

When she said this, she was enlightened.

We live in a four-dimensional space or even a higher dimensional space, but we, as three-dimensional beings, are unaware of the existence of the four-dimensional space. ”

Nyingma also nodded, "It seems to make sense." ”

"I think it's at least 5 dimensions, our eyes can see the world in 3 dimensions, and if we add time, it's 4 dimensions, and our thinking can recall the past, think about the present, and imagine the future, that is to say, our thinking can reproduce our trajectory in time, and the high-dimensional space can perceive the low-dimensional space, and the low-dimensional space can't see the high-dimensional space, just like a point running around a circle in the two-dimensional plane, it will always think that it is walking in a straight line, and in the three-dimensional space, we will clearly see that it is walking in a circle. So in this way, our thinking is at least 4 dimensions, or even higher.

It is the four dimensions of "length, width, height, and thinking" to think about the essential quantity of objects, that is, "four-dimensional thinking".

The three-dimensional dimension of the three faces of things + one thinking trajectory = four-dimensional thinking. One-dimensional, two-dimensional, three-dimensional and four-dimensional thinking represent different ways of thinking and levels.

And the five-dimensional space is the four-dimensional thinking space axis plus a timeline. and the spatial trajectory of an object on the time axis. The fourth dimension is the space we are in, the objective existence of the material world, which changes with time.

To put it in more popular terms: everything is in motion, and if there is rest, it is only relatively static. The whole of things is three-dimensional thinking, and the movement trajectory of things is time thinking, and the two are combined, that is, "things" plus "movement tracks" present "five-dimensional thinking". ”

"Wait, why did you talk about the fifth dimension again?"

"Because when you think that all five dimensions exist, then the four dimensions will be missing?"

Ron's words appeared on the screen again, "Okay, okay, I believe that the existence of multidimensional space is okay, so my Yuan Infant will be a four-dimensional object in the future?" ”

"No, it's just that the four-dimensional space is used, so that it has the effect of dimensionality reduction and strike, and it is impossible for the baby created by such a small black hole energy to make it shuttle freely in the four-dimensional space, but it is more than enough to avoid the catastrophe and suppress the three-dimensional creatures. It can be regarded as a pseudo-thinking primordial baby, the advantage is that it is one with your consciousness body, it can move with your consciousness more, and what is more awesome is that it can break away from your body and kill the enemy thousands of miles away. ”

"Can you get to space?"

"Since it's a pseudo-four-dimensional, it shouldn't be able to reach it yet, after all, the ghosts in space, such as Naia, are all virtual bodies, and if they are entities, they also have to consider radiation and other issues."

"So, if you add the timeline to reach five dimensions, wouldn't it be even more awesome? Just like the phrase 'fixed' in the mythological character, the other party can stand still. ”

Enki nodded, "It's true, but I don't know where the five-dimensional space is, if you touch the five-dimensional space, the Yuan Infant will be even more powerful." ”

Ron continued to ask, "Okay, I only have one last question, does this primordial infant really have the ability to reduce dimensionality when it is made?" You're talking about a pseudo-four-dimensional creature. ”

"Pseudo-four-dimensional is also four-dimensional, this is the simple question you said at the beginning of pinching an ant to death, I can reply to you now, do you feel so powerful."