Life in the collapsed world from scratch

"What are you busy with?" Kiyana poked her head curiously, trying to see what was going on inside the door.

"It's something you can't see." Cheng Xi replied while pressing her head back.

"What, stingy..." Qiyana, who felt perfunctory, puffed up her face and said unhappily, "Even Cheng Xi bullies me... If you don't get in, you don't get in, what's the big deal."

"Okay, go back quickly, don't worry the family." Cheng Xi comforted her by rubbing her head.

"She won't be worried..." Kiyana lowered her head and whispered.

"That's not sure." Cheng Xi said meaningfully.

Qiyana froze for a moment, and was about to continue asking, but saw that Cheng Xi didn't give her a chance to ask questions, and closed the door with a "bang".After that, she vaguely seemed to hear a question like "Who is it" coming from the door.

...a woman's voice?

Kiyana blinked, as if she understood something.

That's right... Cheng Xi has his own life now.

The girl thought silently, feeling a little sore in her heart, but it didn't take long for her to realize that something was wrong.

——Why did that voice sound so much like my aunt?

...No, no, I must have heard wrong, right?

Qiyana shook her head quickly, turned around and left here in a bad mood.

……

"That bad guy Cheng Xi..."

Jumping between the buildings, listening to the sound of breathing blowing past her ears, the girl muttered softly, recalling the scene just now, her mood became even worse.

She doesn't want to go home, but the current situation seems to have no other choice but to go home.

not to mention……

Recalling what Cheng Xi said just now, a glimmer of expectation rose in the girl's heart.

With such a complicated mood, Qiyana stood back at the door of her house.

Looking at the closed door in front of her, the girl hesitated for a while, then took out the key from her pocket, inserted it into the lock, and opened it.

"I am back……"

The hello home is just out of habit, and naturally sounds flat and unenthusiastic without the expectation that it will be answered.

however……

".々Welcome back."

A gentle voice came from in front of her, and Qiyana raised her head in surprise, looked at the white-haired woman who was smiling and looking at her, and froze for a moment.

"Are you tired from playing outside? Do you want to take a shower first?" Seeing the extremely familiar face in front of her, Cecilia was in a daze for a moment, then shook her head and asked in as soft a tone as possible.

"..." Qiyana suddenly felt a little sour in her heart, she shook her head, lowered her head, and did not speak.

"……group"

Cecilia sighed, squatted down and gently embraced the girl in front of her, stroked her hair, and said with a trace of apology:

"Sorry……"

Don't make the person who loves you sad, she failed to do such a simple (good money) thing before, but she had to be reminded before noticing it, it really shouldn't be.

Regardless of other things, now she wants to make up for the girl in her arms as much as possible.

"..."

The girl's body trembled slightly, and she buried her head in Cecilia's arms, hugging her body tightly, and after a long silence, she said in a dull, choked voice, "I'm hungry... I want to eat first."

"……is it okay?"

"Of course it's fine..." Cecilia gently stroked the hair of the girl in her arms, and said softly, "But...before that, you have to wash your hands first."

"...Mmm." The girl nodded slightly.

Chapter 360 Is anyone curious about the future?

"So, is that what you used to trick Cecilia into helping you?"

The constraining girl's eyes wandered between the endgame on the table and the cards in her hand, and after thinking about it, she played two cards: "To three."

Cheng Xi retorted: "How can you say it's a bluff? What I said was the truth, and I did say that with a certain degree of certainty... I'm sorry."

Xi'er didn't speak, and after a moment of hesitation, she played two fives.

"Yes A!"

"Xie'er" directly dumped the older one.

"..."

The girl looked down at herself.

She felt that she was being deliberately targeted, but she couldn't find any evidence. In the end, she could only puff her face and said "I'm sorry" sullenly.

In a sense, there was nothing wrong with what Cheng Xi said to Qiyana. Things like "gathering a crowd to gamble" were indeed not suitable for Qiyana, who was still a child in his eyes, to see.

As for the two girls present...

Leaving aside Xier's words, the "growth" "Xieer" can no longer be regarded as a child in some respects.

"It can't be said to be fooling, but it can be said to be a certain degree of inducement?" The girl exposed Cheng Xi's words and said: "Otherwise, how can ordinary people think in the direction of 'time travel'?"

"That's what she asked first if I could revive people. I just answered her question truthfully and gave her a brief introduction to the specific feasible method." Cheng Xi argued hard.

"Brother..." Xier gently tugged on his sleeve.

Cheng Xi glanced at her suspiciously, and then reacted after being reminded by the girl. After looking at the cards in his hand, he said "I'm sorry".

"Brother, is it really possible to go back in time?" Xi'er asked curiously.

"It may be difficult, but theoretically, it is indeed possible." Cheng Xi took out two cards from the pile on the table, put them side by side and said:

"If the rules of 'collapse' are also regarded as part of the natural rules of this world, then we are not destroying the existing rules (bdff), but conforming to the rules and using the power of the rules to achieve the desired goal... From this point of view, so-called 'time travel' is not fundamentally different from other scientific activities we have done so far."

"Oh..." Xier nodded.

Although I don't understand it, what my brother meant is... It is possible to change the past, right?

But... in this case...

Her expression suddenly became worried and hesitant.

"In this way, once the past changes, the future will change accordingly, right?" the girl asked.

"As far as the current theory is concerned, it is like this... Otherwise, how can we call changing the past?" Cheng Xi shrugged and replied.

Changes to the past inevitably create a loophole known as the "grandmother paradox."Something has to be done if the world is going to get bugfixes like that out of the way.

As for the specific method... just like the three theories about time travel that he talked about with Xingxing in the past, "fatalism" is the most unreliable and the easiest to falsify.

And the other two theories, whether it is the "parallel world" or the "world line" theory, the final changes will inevitably tend to be "infinite".

But different from "parallel worlds", the changes caused by time travel under the "worldline" theory will not be accumulated and left behind. A worldline is changed, just like a story is rewritten, it will only affect This story itself has an effect, without additionally generating another story to exist at the same time.

In this way, "infinity" is also narrowed to "limit" to a certain extent. Compared with the theory of parallel worlds that diverge infinitely in the true sense and eventually turn any possibility into necessity, such a theory is obviously easier to be accepted. People accept it, and it is closer to the reality.

General-purpose time machines are not allowed to exist, but the authority to travel through time and space can be controlled by individuals. This kind of loophole that is full of contradictions can be seen at a glance, which is to put abnormal rules like "Hengkai" that violate the original natural rules of the universe. It is the inevitable result of forcibly inserting into the original rigorous and self-consistent world rules.

"In that case, Cheng Xi, can you promise me one thing?" Lian put down the cards in his hand, became serious rarely, looked into Cheng Xi's eyes seriously and said: "Absolutely, absolutely don't try to change and Anything about my past... okay?"

She is very satisfied with her current life and does not want any changes.

Leaving aside others, Cheng Xi, as an "outsider", is the same as her as a "created one", her own "past" foundation for existence in this world is very weak, and any point has no impact on the past. Any changes to them may cause them to disappear in the future.

She didn't want to disappear, let alone Cheng Xi, so she wanted Cheng Xi to promise herself not to try to change anything related to his past no matter what.

Otherwise... Even if it might make Cheng Xi angry, she will do her best to stop it.

"Brother..." Xi'er grasped the clothes on her chest slightly, and looked at him nervously.

On the other side, "Xie'er" also fell silent, looking at Cheng Xi quietly, with the red light in his eyes flickering slightly.

The atmosphere in the room suddenly became quiet.

Seeing the three people looking at her nervously, Cheng Xi smiled lightly: "Don't worry, I won't do such a stupid thing."

"Besides, the initial experiment on this matter has not yet started, so how can you be sure what the specific form of time travel is?"

After all, the concept of black holes is involved, and there are many material limitations and factors that have to be taken into consideration.

"And... don't just focus on the past." Cheng Xi said with a smile: "Since you can go to the past, then in principle, it is also possible to go to the 'future'."

“Aren’t you guys curious? About what the future looks like.”.

Chapter 330 Seven "Xie'er" Doesn't Really Care?

Curious?

Of course I am curious, who would not be curious about such things in the future?

I'm curious, but it's fine now, so it doesn't matter if I don't know about things like this in the future.

Hearing the three people's answers with almost the same meaning, Cheng Xi thought for a while, and it seemed that it was indeed the same thing.

If according to the "world line" theory, and there is no "convergence point" setting, then the future should be divergent and uncertain.

In a chaotic system, any change in the initial conditions will lead to a very different final result.

He can indeed go to the future, but the moment he comes back, no matter whether he will change his actions based on the information he sees in the "future", the "future" has been effectively changed.

Changing the future does not require any other actions, just the act of "observing" itself is enough.

The observation is the change, as if the uncertainty principle of the quantum mechanics is still established in the time field~generally.

In other words, he can never-go to the real future.

That being the case, it doesn't matter whether you know the future that is destined to be changed.

Cheng Xi believes that with his own efforts, the future between him and the world will not be bad.

This is not unfounded confidence, but a well-founded inference.