Science is an accumulation process of latent laws obtained through observation, and as long as it can be observed, the final accumulation is an inevitable process, provided that there is sufficient time.

If civilization is annihilated before its accumulation is complete, how can it be said to be successful?

Civilization is annihilated, and when a new civilization is born again, it is a process of starting anew.

But even if there is enough time for civilization to develop, some things are destined to be unobserved, and these unobservable things can only exist in hypotheses.

Is a hypothesis science? This is difficult to define, because science tries to summarize the truth with the observed phenomena, so science can only prove the truth but not the truth, it can only prove what does not conform to the laws of the truth, and cannot point to a formula and say: This is the truth!

In the early stage of the development of science, there can be many wonderful ideas, but through the screening will be the most "accurate" formula left in the end, in other words, the inevitable path of science is to eliminate the selection, and finally save one, and the things that cannot be observed in the field of philosophy, because they cannot be proven wrong, so it will always be colorful.

A hypothesis, which corresponds to the very early stage of scientific development, and which cannot be proven to be wrong, or cannot be proved by logic at all, belongs to the category of philosophy.

There are many thresholds in front of the time machine, some of which involve science and some of philosophy, and coupled with the limitations of the periodic law of civilization, it is indeed almost impossible to create a time machine.

……

Su Yuan sighed and said, "It seems that it is not unreasonable that the reason why the Great Universe has been able to maintain stability all the time, and all the possible threats to its existence have been suppressed to an extremely small probability. ”

"Yes. Rootless duckweed said flatly. "Under the rules, everything is an ant. It stands to reason that time machines shouldn't exist in this world. ”

"But this kind of accident happened in the process of development!" Su Yuan said with a sigh, the long river of time is an untouchable field. However, in the long development, there is a mistake that is reached by someone who should not have touched it.

It's definitely a deadly thing.

From this, Su Yuan had a terrible assumption, is the world we live in real?

Last world: In the eighties, a handful of science fantasists came up with a fantastic worldview -- does our world exist in a supermassive computer?

Suppose that one day human beings build a supercomputer that can imitate the human mind, and make the "people" in it not realize that they are just a program, they develop their own society, their own science, their own values, but they will never believe that they are just a program.

Maybe we're just programs packed in a bigger "box", which is known as the box theory.

With the development of science, the birth of quantum mechanics seems to prove this idea even more. In quantum mechanics. Everything is uncertain, and it is only when you observe it that it is what you see. For example, a cat, before you look at it, its state is uncertain, and only when you do, it will collapse into what you see before you look at it.

This is what the Copenhagen School considered "wave packet collapse" - the collapse of the state wave function of the system as an eigenfunction when observed. The reason why our world is in its current fixed state is the result of the combined action of countless observers, in a distant universe that we have not been able to observe. It is still in a state of indeterminacy.

Suppose we exist in a large computer, is it that in order to save the computing power of the computer, the program writer is simply "lazy" to obscure the places we cannot see, or simply do not calculate them?

Of course. Su Yuan also knew that the box theory was just a whimsical idea, but at least there was such a possibility, wasn't it. If our world were an internal program created by the editor-in-chief of the Creator. So will he add a setting of "never forbidden, thinking about oneself as a program" or "forever forbidden, recreating a box in a box"?

As long as it is a program, it is inevitable that there will be vulnerabilities. No matter how strict the setting is, there will be times when things go wrong. Maybe the time machine was supposed to be banned. But there is no thing that has been effectively banned.

After thinking about it so much, in fact, Su Yuan didn't think that the world he existed in was just a program, but this aspect of the idea could just describe the time machine more vividly, and he couldn't help but make associations.

Returning from his thoughts, Su Yuan cautiously asked, "Can you tell me why you came to this era from the future?"

"I don't think you can guess without further ado......" Rootless duckweed quickly replied, "To change history!"

Su Yuan nodded, indeed, this is a very convincing reason.

Rootless duckweed ran all the way to this era, and it will never be to travel and jump the world line, which means that he can't go back to the future, so his purpose can only be one, change history!

"What happens in the future?" she asked.

The rootless duckweed was silent for a while, and instead of answering Su Yuan's question head-on, he typed out a line of words: "Do you know Su Yuan?"

Su Yuan's heart trembled, and he couldn't even help but stop breathing, Su Yuan even wondered if his identity was exposed, and the rootless duckweed was testing her?

Su Yuan bit his tongue lightly, forcibly held back his complicated feelings, and managed to calm himself, "Who is this person, is he a very important person?"

She asked, pretending not to know.

Time suddenly froze, Su Yuan stared at the computer screen, quietly waiting for the rootless duckweed's answer, and her intuition told her that the "Su Yuan" in the mouth of the rootless duckweed was most likely herself, of course, her own time in that era!

Unconsciously, a few traces of sweat oozed from her forehead, which made her very uncomfortable.

"Hehe, I'm thinking too much, how do you know her. "She is not a particularly important person, but I have to admit that she is a person who has a profound impact on the future. ”

"Do you know her?"

Su Yuan asked tentatively, if the rootless duckweed was not testing her, but did know himself in his time, then in the current era, it is very likely that he would know him, but who is this rootless duckweed?

"I don't know her......" Rootless duckweed's answer overturned Su Yuan's speculation. "This time I came back from the future, and I came specifically to find her!"

"Then why are you looking for her?" asked Su Yuan curiously.

She really wants to know, what is there about herself worthy of being so worried about rootless duckweed, to say that it's okay to mess around, it's a bit ridiculous when it comes to influencing the world, she has always defined herself as an ordinary "small citizen in the market" role, it will definitely not be her turn to save the world, and there is a bad problem, that is, this crossing, her purpose is only selfishly to save the people around her.

If you want to talk about special abilities, it seems that only [Backtrack] can get a little bit of it.

Time, time, Su Yuan was shocked, could it be that the other party came for the ability of [backtracking]?

If that's the case, then you really have to be careful. Su Yuan made up his mind, it was better not to meet him rashly before he thoroughly figured out the purpose of the rootless duckweed.

"As I said, although she is not a particularly important person, her existence may be a node event that affects the whole world......"

"This is strange, since her existence is a node event that affects the entire world, she is not a particularly important person?"

It doesn't make sense logically, it can affect the whole world, how can it be an unimportant person.

"Because that's my inference, and it's not confirmed!"

"How do you describe her in your future?" asked Su Yuan expectantly.

"No, there was nothing about her in my time, and I heard about her from other people's mouths, so I came here on a time machine that had just been made. ”

How could this be? Su Yuan looked stunned, and she hurriedly asked, "So have you found her now?"

Perhaps it was her question that alerted the Rootless Duckweed, who replied, "You seem to be interested in this person?"

Su Yuan smiled dryly: "It's nothing, but I did get some interest when I heard you say this." ”

There was no reply for a long time, and seeing that time was slowly passing, Su Yuan was also a little anxious, could it be that he said it too abruptly and scared the rootless duckweed away?

Now she can basically confirm one thing: when rootless duckweed mentions "Su Yuan", she is not testing her, but really looking for herself! No, it should be the original self in that world, that is, Su Mengyuan in this world.

The diary was picked up by Ji Ye Hao before Su Yuan crossed over, in other words, the crossing of rootless duckweed was long before her, and the Su Yuan she was looking for at that time was herself!

Later, I also crossed over, and the world once again experienced "obliteration-collapse", because when the world line jumped, only the jumper as an "observer" could avoid being involved in the reshaping of the whole world, so even the rootless duckweed that witnessed the world line jump as a former "observer" has become one of the backgrounds of the whole world that has been erased and collapsed in the new world line jump with itself as an "observer".

Su Yuan really wanted to ask which world line the rootless duckweed came from on the time machine, but she knew that she didn't have a chance, so the rootless duckweed sent a sentence: "There are some things on my side that need to be dealt with immediately, and we have a chance to talk again......"

After that, Su Yuan saw the rootless duckweed exit the chat room, and then the chat room was also closed.

"It's really vigorous!" Su Yuan saw that the chat room had been closed, and shook his head to save the URL.

Chatting with rootless duckweed this time, Su Yuan's harvest is still very great.

The rootless duckweed is the owner of the diary, and the purpose of coming to this world is to find "Su Yuan", and the key now is whether the purpose of his search for himself is for himself or for the ability of [backtracking]. (To be continued......)