“…… Therefore, the fundamental purpose of our information integration mind body is still to find the possibility of self-discipline evolution by observing Haruhi Suzumiya, but because of the positive actions of you, that is, people from another world, the ideas of the radicals have gained wider support.

Getting closer to Haruhi Suzumiya, and even participating in Haruhi Suzumiya's actions to a limited extent, is a new authority given to Ryoko Asakura, as a representative of the radical faction, and I will act as an observer and supervisor to ensure that Haruhi Suzumiya's thinking and actions are not influenced by the radicals. ”

In the living room, Ji Feng was about to drink all the pot of tea in front of him, and Nagato Yuki finally ended her tirade.

Then Ryoko Asakura got up and refilled his pot with hot water, and then sat quietly with Yuki, very patiently waiting for Ji Feng to think and understand what Yuki said.

"Ah...... Your origins, your purpose, and your attitude towards Haruhi Suzumiya and myself have been clearly expressed.

I'm just a lost traveler, and I have no reason to be hostile to the Mind Body of Information Integration, so of course I'll cooperate with your actions—but your actions have only changed from looking from a distance to seeing closely, from passively following a soy sauce to actively following a soy sauce, right? ”

After thinking about it for a long time, Ji Feng briefly summarized the unclear "professional terms" that Youxi just said in plain and simple language.

"......, yes."

Youxi seemed to think about it very seriously for a few seconds, and then gave Ji Feng a definite answer. Ji Feng nodded clearly, and then asked with interest:

"I've already counted the future actions, but I still have a few questions that I haven't been able to figure out, and I want to ask for information integration thoughts - it's about "Doraemon".

If a person receives a message from his future self and then takes some action to change the future, will the future of the future self who sent the message back also change?

If the future in which the future self is located is changed, is the future self clearly aware of the change?

If he knows that he is still dissatisfied with this change, and he sends a message to the past again, or even goes back to the past to change a certain 'history' and change the future in which he lives, can the person who is dissatisfied with his practice also go back in time to stop him? And after he is stopped, can he go back to that point in time again and help the future self who was blocked change history?

In this way, if the person who stopped him also went back in time to stop him again, like him, then such time travel would be endless. But if this person is killed, he won't be able to go back in time, right?

But if he kills himself, or his grandmother, will there be a 'grandmother paradox'? ”

What Ji Feng asked about the information integration mind body was the plot of "Doraemon" that still exists in this world, but it can also be said to be the plot of "Suzumiya Kasuga Series" about Asahina Minoru Kuru, Asahina Minoru (middle), Asahina Minoru (large), and another futuristic person, Fujiwara.

According to Asahina's explanation to Ayu, the people of the future have an organization similar to the "Time and Space Administration", which is responsible for guiding what is happening in the "present" on the right track and ensuring that "history" does not change. Otherwise, after the future changes, the existence of the original future man will no longer be established, and a parallel world independent of the original world will be derived.

But this explanation contradicts some of Asahina's actions of "changing the future", and even if Asahina does nothing, as long as she returns from the future to the past, then this past is also equivalent to being changed—because Asahina Minoru did not exist in the original past, but now it exists.

In this case, a parallel world that is independent of the original world should have been generated.

And when she comes into contact with Haruhi Suzumiya, the future will once again experience a huge change, because in the "history" before she returns to the past, Haruhi Suzumiya is impossible to contact her.

In this case, another parallel world should be added.

However, since no matter what people in the future do, they are only vainly increasing the number of parallel worlds that have nothing to do with them, and will not help the future in which they are located, then what reason do they have to spend even a small amount of manpower and material resources to go back to the past except for "archaeology"?

Therefore, regardless of whether this theory of time and space of future people is physically valid or not, first of all, it is not logically valid, and only ordinary high school students like Ah Xu, who have a low IQ and do not love science, will be fooled and lame.

"A person who goes back to the past can kill his own 'past', and the 'grandmother paradox' does not exist."

Before Ji Feng's words fell, Youxi answered his question without the slightest pause, it seems that the information integration mind body has indeed studied time and space very deeply.

But this is also a matter of course, after all, Yuki Nagato also communicated with his other-time isotope once or more in the "original", otherwise Ji Feng would not have asked her this question.

"The particles that make up the universe are moving all the time, so the 'entropy' of the universe is also growing all the time.

This motion is irreversible, so entropy is also irreversible. Even if all the particles of the universe re-follow the trajectory they once traveled at some point and a certain moment, it is only the equivalent of crossing the starting line again after completing one lap on the track.

Although on the surface, the picture at this time is exactly the same as when it first started, the entropy in the universe has increased at this time, and the feeling of 'exactly the same' is nothing more than the illusion of very similar objects in the subjective cognition of human beings.

Therefore, the 'future self' and the 'past self', although they may be identical in appearance, are still two different and completely separate individuals.

In three-dimensional space, the concept of 'time' does not exist, and the objects in three-dimensional space have neither 'past' nor 'future', but only a 'present' that is constantly in motion.

Human beings, as three-dimensional objects, cannot recognize the fourth dimension of space, just as two-dimensional objects cannot recognize the third dimension. Human beings' understanding of the imaginary fourth dimension of 'time' comes from memory, and the definition of four-dimensional space as three-dimensional space + time axis is nothing but a misunderstanding of the concept of 'Minkowski space'.

Therefore, as a three-dimensional object, it is meaningless for humans to discuss time, you just need to know that all objects in three-dimensional space, including the 'future man' and the two three-dimensional creatures of Yuki Nagato and Ryoko Asakura, have only 'now'. ”