Extreme environments like black holes are the existence that breaks physical rules. Of course, existence must have a reason. Perhaps black holes have not broken the physical rules of the universe, but are just contrary to the physical rules we recognize outside.

Black holes are too strange. The general laws of physics have collapsed when space and time are completely reversed. They have become a special wonder in the universe. Under extreme conditions, the physical rules we recognize are no longer applicable. There is another form of rules inside the black hole.

This creates a problem: since the radius of a black hole is the time axis and space becomes an abstract concept similar to "time", how big is the inside of a black hole? Standing outside of a black hole, we have a general understanding of it using the external spatial scale, but if we stand inside it, is it infinitely large?

Because of different rules, it is entirely possible that the inside of a black hole is another world. Many scientists believe that black holes are channels connecting the "new world", and it cannot be said that they are absolutely wrong.

The key is whether it is simply defined as a special star that cannot escape even photons, or is it considered an extreme environment in the universe - causing physical rules to collapse. Because of different understandings, the results obtained are completely different.

If it is a special celestial body, then it is still a celestial body in the final analysis. It is essentially no different from other planets, stars and other celestial bodies. The reason why it is called a "black hole" is simply that the gravity of this celestial body is so great that even photons cannot escape. We cannot see it. It is "black", so it is called a "black hole".

But if a black hole is an extreme environment where the "physical rules in common sense" completely collapse, then is it still a celestial body? It may look like it on the outside. But its interior has completely lost the ability to define it!

The two are completely different understandings!

This change of thinking is actually understood from the concept of the long river of time. Su Yuan found that most of the topics she discussed with Rootless Duckling were philosophical issues. However, when applied, it had to involve reality.

What is philosophy? Philosophy is like a set mechanism. Once the trigger condition is reached, it will help the time traveler complete the "elimination-collapse" of the world, reduce the entropy value, jump on the timeline, and complete the jump of the world line.

But reality is that pragmatic scientists are struggling with the topic that they can never get around: energy is required to reduce entropy, where can we get such a huge amount of energy? Since we cannot find a way to obtain huge amounts of energy in reality, time reflux cannot be achieved! This negates the possibility of a time machine.

Su Yuan remembered that Gao Jun and Xia Linwo introduced several ideas of time machines to her, and in the end they were all torn apart by objective reality - to turn the entire universe back in time, the energy needed is enough to create a new universe!

Even the most likely theory of cosmic strings. It believes that surrounding cosmic strings with extremely strong gravity is enough to create a space-time tunnel, but the problem is that when two cosmic strings approach at high speeds, a black hole may be created, and the mass required a year ago is equivalent to half the mass of the Milky Way.

Not possible! Several ideas cannot be realized, and reality rejects the existence of the time machine!

But is it really impossible to manufacture a time machine that jumps through the world line?

If it cannot be made, then where did the time machine Su Yuan was riding come out? How did the rootless duckweed return to the current era from the future?

What scientists deny is that the time machine that cannot be made in reality actually appears. The conclusion is obvious. It is because there is a problem with the scientist's thinking, or in other words, there is a problem with the thinking that simply relies on reality.

Just like admitting that a black hole is an area where physical rules collapse, rather than a simple star body, it is impossible to measure the distorted laws within a black hole with common sense outside the black hole. The reality we see with the naked eye may not be the whole of the reality! The parts that cannot be seen can only be explained through scientific hypotheses or philosophy.

Now Su Yuan already knows that the "fruit" exists as the "fruit". What she needs to look for is the "cause" that causes this "fruit". What is the "cause" does not matter, it must exist anyway. Time has flowed back. The entropy value of the entire universe has decreased, so there must be the "cause" that provides it with energy to complete this "fruit".

The concept of a long river of time is a reasonable explanation.

Although she and the rootless duckweed could not define the long river of time. They did not know its existence, Su Yuan believed that the maker of the time machine must have a full understanding of it. At this moment, she suddenly felt awe of this person. How amazing this person should be!

...

"Rootless duckweed, can I ask you a question?" Su Yuan's thoughts turned around and said to the rootless duckweed.

“What’s the problem?”

"Do you have the habit of writing a diary? Have you ever written a diary before that records what will happen in the future? Well... Of course, this diary may be a thing of the past, and the current time has exceeded the records in the diary."

After typing these tentative words, Su Yuan quietly waited for a reply.

Rootless duckweed didn't let her wait for a long time, and smiled and said, "You are also a time traveler, so have you recorded the future?"

Uh... Su Yuan was stunned, "No, I did write down what will happen in the future with a record book, I am afraid I will forget it in the future..."

"That's right, the human brain is not a computer, it's impossible to remember everything." Rootless duckweed replied.

"I did write a diary before, but that diary was lost. Now I think about it and feel a little scared. Sure enough, the diary lacks security. If I knew it would be lost, I wouldn't write it on the notebook."

Su Yuan's breathing suddenly accelerated, and she was finally sure that this rootless duckweed was the owner of the diary!

"So, can you tell me how you came from the future?" Because of excitement, Su Yuan made several mistakes when typing on the keyboard, and finally sent a sentence out.

"Of course I came on a time machine."

The rootless duckweed had a shameful expression.

Su Yuan immediately wanted to ask her, "Where is that time machine now?" But thinking about it, this question is too abrupt and very inappropriate. If it were him, he would definitely not tell another time traveler the location of the time machine. Since he asked, it would be useless. Why bother to risk the rootless duckweed being vigilant and make it boring?

"Where are you?" asked Wugeng Duckling.

"I also came back on the time machine, but I don't know the time machine I ride. I'm also confused when operating it."

Rootless duckweed gave another shameful expression: "The time machine must not be operated randomly. What if I get lost in the long river of time? According to the long river of time, there are a large number of sound and incomplete universes in the long river of time. If I get lost in the solid universe, it is still good. It is nothing more than not reaching the time point I want to travel through. But if I get lost in the unsound universe, I am very likely to follow that universe to perish!"

Su Yuan said "ah", and now thinking about it, it seems that there is such a risk. At that time, he was really ignorant and fearless, and his luck was a little better.

"In addition, if you don't know about the time machine, you must not know that the time machine has the function of choosing a landing location, right?" Wugeniao Duckling said again.

“Can you still choose a landing location?”

"Of course, if you can't choose a location, what if you travel to a densely populated place, then it would be nice not to be under house arrest by those in power."

Su Yuan nodded sincerely. It is really important to freely choose the landing location. This function may be standard for all time machines!

"Take my time machine as an example, in order not to appear in densely populated places, the geographical maps of the past periods were loaded in advance, but this was still not safe, so the place where the landing was usually chosen in the deep mountains and forests."

The place where she landed was deep mountains and forests. Although the way she landed was not elegant, her luck was quite good. She had never been lost in the long river of time and had not appeared in a densely populated place. Su Yuan found that her luck was so good.

"I think you must come from a farther future than me. My time machine was obtained by chance. To be honest... my time did not have the ability to make time machine." Su Yuan decided to confess some real situations.

Rootless duckweed seemed to have expected such a situation. "It is understandable, as far as I know, no one had the ability to make a time machine before my time machine. In my period, the time machine was just starting out."

"So how many people had the ability to make time machines during your period?"

Su Yuan suddenly became nervous. If the time machine had become a major road cargo in the era of rootless duckweed, then there would be too many uncertainties.

"Have the ability to make time machines? No, no one has it. Although my time machines were indeed made at that time, objectively speaking, that era did not have the ability to make time machines. I think that even in a more distant future, it is impossible for other people to make time machines."

Su Yuan frowned. What does the rootless duckweed mean?

Since the time machine had been manufactured at that time, why did it be said that the era did not have the ability to manufacture time machines? It is even so certain that even in a more distant future, it is impossible for people to manufacture time machines to appear. Isn’t this a contradiction?

"Are you confused? Actually, it's not surprising at all. It's because of thinking. Not everyone will think of the illusory river of time. Even if you think of the concept of a similar river of time, not everyone will think of the river of time as an accomplice to jump the world line. If you take a step back, even if you think of the river of time as an accomplice, the problem arises again. How many people can reach the level of being recognized by the river of time as a risk factor m?"

The conditions of this link after another, each one is a huge step, with a small probability, and there are too many uncertainties in the middle.

Su Yuan was speechless. If he wanted to become a dangerous factor m identified by the long river of time, the conditions were too harsh. Not to mention unifying the four basic forces of gravity, strong force, weak force, and electromagnetic force, and establishing a unified theory; in addition, he also had to find the Higgs boson to understand the relationship between mass and space.

This is not over yet. Since we need to achieve the goal of jumping time through space means, our attainments in space must also reach the level.

Thousands of years or tens of thousands of years may not be achieved.
Chapter completed!