Shi'er passed by with a plate and ran into Bai Jing. Seeing that she was determined to be no one around, she didn't dare to stop her. She hurried to Zhou You's side: "Shopkeeper, why don't you chase after her?"

Now that I am traveling around, I have no idea how to chase her.

"Let's talk about it later." Zhou You waved his hand and lowered his head to drink porridge. "Do you do the job she is responsible for during this period."

"I don't know, it's super complicated."

"It doesn't matter, just do it blindly." Zhou You picked up a chopstick and pickled vegetables from Shi'er's plate.

"Oh." Shi'er was useless to be anxious, so he had to sit beside Zhou You. "I know you have lost something, but because of this, shouldn't you cherish what you see more?"

"Yes." Zhou You sucked the porridge with his head, "I work hard, study hard, treat others sincerely, respect my parents, I take my own profits and losses, pay taxes for the country, I am a positive role model for the school, and I also won a construction prize. Now the money in my hands is far more than my desire to consume. What else do I do? Shier, build a city?"

"..." Shi'er was stunned for a moment, then sighed, "Shopkeeper... I'm such a positive person, you'll be devastated by you. At least, I mean at least, express some feelings to Bai Jing, don't be dead all day long."

"What do you mean?" Zhou You stared at Bai Zheng stupidly.

Shi'er leaned over the back of the chair and gestured, "Shopkeeper, I read a book that says that people live in caves, and have been in caves for generations, and they don't feel crowded, frustrated and dark. Then one day, a man walked out of the cave and saw the outside world. He could never go back again. Even if people go back, his heart will always float outside."

"I know this, you must be watching a fairy tale version. The original version of the cave metaphor is much deeper than this darkness." Zhou You grinned. "In the original story, the man returned to the cave and tried to tell his companions how beautiful the world outside was and persuaded them to go out too, but his companions could not understand it at all, thinking that he was talking nonsense, defining him as a madman, imprisoning him, and even killing him, and the entire cave metaphor ended here."

"If this is true, then he shouldn't have come back." Shi'er glared at Zhou You and said, "If you want to go out now, then go out. It's no big deal. No one will blame you."

"It's all over, Shi'er, but now I can't get out even if I think about it." Zhou You gently stirred the coffee, "This is my choice. It was not until that moment that I knew I would make this choice."

"Then do you regret it now?"

"have no idea."

“What about choosing again?”

"I don't know." Zhou You looked out the window and saw Willon who was carrying his schoolbag to go to school. He waved his hand to say hello to her. Willon just nodded, and there was nothing to say.

"What is this?" Shi'er suddenly looked at Zhou You's fingers.

"This... is quite stupid." Zhou You smiled dryly, "It's a very important ring. Everything was too urgent at that time. He forgot to ask for it, and I forgot to return it."

"If it is very important, he will not forget it." Shi'er nodded, "I don't know the others. At least Xu Tianling, she is the most rigorous and meticulous person I have ever met, and she will definitely not forget it."

"It seems like that." Zhou You looked at Leng Xie's ring again. It was the most expensive protective cover and a small storage space. "But what can I do if I stay?"

"You can only answer this question yourself, the store manager." Shi'er also got up and left.

On this day, Zhou You's mood settled down again. His mind had not been working for too long. He decided to pick up something a little, but he didn't want to touch π again, and wanted to put in some relaxed and interesting thoughts.

The two-dimensional architect's idea suddenly emerged. After talking to Mu Qingyuan, he had no time to imagine it.

So he leaned on the back of the chair, slowly closed his eyes, and embarked on the two-dimensional architectural journey in a state of no rush and no results.

This time, he soon entered a meditation state. Although he did not feel the magical particles like in the magic plane, it was enough to make the mind run immersively at high speed.

A sphere came into being in his mind.

Wrong, it shouldn't be a sphere, two-dimensionality should be a plane.

So he tried to spread the sphere and spread it out.

But he couldn't do it.

The two-dimensional plane of a sphere is uneven and has curvature, just like a watermelon peel, it is always curved unless it destroys its structure.

So Zhou You gave up on this matter and continued to let the sphere return to the sphere. He imagined himself as a two-dimensional architect on the surface of the sphere, and the sphere is his architectural space.

He had almost no thought, so he casually drew a circle on the sphere, which should be regarded as the most basic building here.

The building always needs parameters, so he began to set the diameter of the circle.

The problem arises.

In three-dimensional view, this circle is actually a cross-section of the sphere, a latitude line, with its center inside the sphere, and the radius is a line connected through the center of the circle.

But now I am a two-dimensional architect and live in the spherical world. It is impossible to see space outside the spherical surface. That is to say, for spherical two-dimensional creatures, the center of this circle is on the surface of the spherical surface, so its diameter is no longer a straight line, but a curved line traveling along the spherical surface, just like a watermelon peel.

In other words, for the two architects living on the sphere, the diameter of the circle has become longer.

But in the two-dimensional architect's vision, the diameter is still a straight line, because the curvature appears in a higher dimension and he cannot sense it at all.

At this moment, Zhou You instantly understood something, took out the straw paper and started to calculate wildly.

He first imagined the most extreme situation and drew a circle along the equator.

For spherical two-dimensional creatures, the radius of the circle is the distance from the pole to the equator at this time. Based on this calculation, the value of π is exactly 2.

As the latitude increases, continue to draw circles, and the value of π begins to gradually increase until it reaches the extreme. A small circle with an ideal flat value will be infinitely close to 3.14.

This coincides with the observation results of many planes, and a conclusion came into being-

The space is not flat, only the Demonless plane is relatively flat, but even in the Demonless plane, distortion will occur near black holes and massive celestial bodies. There is reason to believe that if you have the opportunity to measure the π value optically near the Black hole, there will definitely be deviations.

Zhou You grabbed the draft paper and shouted excitedly: "Tianling, is this? I found it! From 2 to 3.14, it's not wrong! I didn't read the math books and found it myself! Let you say I'm stupid again!"

Even though he knew that mathematicians had studied this matter a long time, and even though he knew that Einstein and Hawking had already written the calculations and conclusions clearly, he could not suppress the excitement brought by thinking.

But no one responded to him.

Xu Tianling had already left, and there was a hint of coolness in the empty office, not knowing whether it was autumn or winter.
Chapter completed!