00318 Extra Story One-Dimensional Space-Time Paradox
"How do you understand the concept of time travel?" The beauty sister's lecture hall has started again. After putting down her brush, Houlemidia seemed to be distracted. Now she is sitting among a pile of books, wearing light pink pajamas and carrying
A big round eye, looks a little cute.
"Huh?" Little Lin Sen has been overusing his brain recently and is currently resting.
"I know!" The kid Wu Huan was pretty good and had the courage to raise his hand to speak.
"Please tell me." Lemidia was deeply involved in the drama.
"Well, maybe it means going back to the past, changing the future, and going to the future to review the past?" Wu Huan's answer was very concise.
"Not bad!" The beautiful sister praised first, and then when Wu Huan smiled shyly, she immediately poured a basin of cold water on her.
"However, these are all just whimsical misunderstandings. In fact, time travel is a very complicated paradox with many logical contradictions." The beautiful sister officially started the class.
"It's okay, it's okay~" Lin Sen comforted Wu Huan, and the ambiguity of the young couple made Lemidia's eyes warm.
"Hey, hey, hey! Don't you listen to me anymore?" He knocked on the floor in dissatisfaction, and the two people in front of him separated and sat upright.
Si Que, who was squatting on Lemidia's head, raised his foot and raised his middle finger: "Stupid dog, your movements are becoming more and more skillful!"
Lin Sen immediately returned a cold look, making Si Que tremble all over.
"Hmm, sit down and listen carefully. If my guess is correct, it will definitely help solve our current troubles!" When Lemidia said this, Lin Sen and Wu Huaner
They looked at each other and felt quite helpless in their hearts, because they had thought the same thing a few days ago after seeing the young lady who made a hundred-meter sword mark with one sword, but it turned out that this young lady had some strange disease.
, it turns out that such fighting power can only be achieved when in a near-death state. As a result, a new recruit immediately became a "painting expert". Although he is beautiful, he also has the attributes of a vase.
So now Lin Sen really feels deeply powerless. Facing the power of Kui's overlooking, its thoughts are completely beyond the reach of human beings. After the feeling of powerlessness began to appear, Lin Sen has been at a loss.
state, until Lemidia suddenly started a class, saying that she had found something useful.
So what exactly is this useful thing?
Lemidia took out a piece of white paper and said to Lin Sen.
"Hypothesis, this is 'space'." She stroked the surface of the white paper, this hypothesis was still acceptable.
Then she marked a point, then drew a straight line, and marked an arrow on the right side of the line to confirm the concept of the direction of its extension [a line developing from left to right].
"Now, I have created a 'line of time' in 'space'." I feel like a creator.
Lin Sen was a little confused, but listened very carefully.
Wu Huan is already a little distracted. After all, the last time he was bullied by the top student is still fresh in his mind...
'Anyway, since Lin Sen is here, I'll just be lazy...' Wu Huan, who was wandering in the world, was thinking this way. Lemidia marked three more points on the line, using a, b, from left to right,
cEstablish the concept of distinction.
"Suppose, a is yesterday, which can also be regarded as the past that has 'passed' and 'disappeared'; b is today, which also represents the present that is 'going on' and is constantly changing; c is tomorrow, a more precise description
, it should be an undetermined future that has not yet 'appeared'. So, if you look at the concept of time travel now, how should you express it in terms of a, b, and c?" Lemidia spoke in detail enough.
Lin Sen thought for a while and gradually became interested. Although he was not sure what the reason for this interest was, he was indeed thinking seriously.
Picking up b and placing it in the place of a is going back in time...
No no no...
No...if b returns to a, does c still exist? Can a still get the result of b?
After just a simple attempt, Lin Sen discovered the first paradox point in time and space travel, "replacement".
"How's it going? Have you found anything?" Lemidia saw Lin Sen's attempt and his distress after the attempt failed.
Lin Sen nodded and shook his head. After hissing, he sat upright and said, "If you follow your hypothesis, the three points abc are on the same line, with continuity and unity, and they look very good from all aspects."
It's logical, but if time can really be understood in this way, then time travel should be an impossible task."
The beautiful sister smiled, and her face showed the joy that a child can teach.
Wu Huan looked dumbfounded.
"What...are you talking about?" Wu Huan, who was wearing pure white pajamas, had another strong impact on her brain. She strongly protested against this purely academic exchange because she couldn't understand it at all!
Lin Sen smiled slightly and explained in a more vivid way: "You can understand it this way, if you were a when you were a child, you are b now, and you will be c in the future, your growth is from a to b.
Then to the process of c, although it deviates a little from what we just said, it is not too different. So think about it, what would happen if you went back to the past? "
Wu Huan frowned and thought for a moment before replying naturally: "Of course, to change the past and become a better me?"
Lemidia laughed dryly, and Lin Sen tried his best to keep smiling. He understood, but Wu Huan still didn't understand.
ovo?
What's wrong? Wu Huan looked at the two of them stupidly.
Although Lin Sen didn't think it was necessary, he still wanted to try hard. So he added: "Then have you ever thought about how you can go back to the past? You can directly bring your existing memories with you like loading a game file.
Should I replace you, or should I help you as a bystander or as a stranger?"
"This..." Wu Huan understood... right? What was my state like when I returned to the past?
If you follow your personal wishes, you would definitely want to directly connect with your past self and start over by reading files with your consciousness. However, when you really do something, you should follow more realistic considerations and go back to the past to see another self.
is the more likely outcome.
Wu Huan understood this, but she didn't notice Lin Sen's expression.
Lin Sen is thinking much more than Wu Huan now. Not only does he understand the many possibilities of time travel, but there are also many contradictions.
Lemidia picked up the pen and drew a circle with the diameter between a and b, and the first point of paradox appeared.
"Loop! If we develop on a line, then when b returns to the position of a, a fitting method replaces the past a to produce a1 with b's thoughts, then if we keep the timeline unified and unique
Under this situation, when a1 develops to the position of b that it originally crossed over under the advancement of time, a paradox occurs! At this time, b1 obtained through the development and evolution of a1 will continue to move forward and obtain c1, or will it fall into an endless cycle and start again?
What about traveling through time and creating a2? After all, the timeline remains basically unchanged. What changes is only us. People walking on the same road, even if we return to the starting point, will the turnback happen again when we go back again?
?”
Lemidia's words began to become very complicated.
Even Lin Sen was now deep in thought and distress. On the contrary, Wu Huan, who didn't have much understanding of this and lacked a lot of doubts and considerations, asked: "Is it possible? If I go back to the past and change myself, what will happen if I go back to the past and change myself?"
Why bother to travel again in the future? Haven’t I already achieved my goal?”
Lemidia shook her head, looked at Wu Huan with a serious expression and said seriously: "Has it been achieved?"
"...?" Wu Huan couldn't understand it at all. Is the seemingly simple time travel problem really that complicated?
When Wu Huan was in a daze, Lin Sen suddenly raised his hand to take Lemidia's pen, and then drew another line under the circle, and a new timeline appeared vertically parallel to the two points ab.
Already.
On the new timeline, a1, b1, and c1 are marked.
This is the only explanation, and it is exactly what Lin Sen is experiencing now.
Lemidia nodded: "By the way, new time, new space, everything is brand new. In order to escape the paradox, the time traveled by B is no longer on the original timeline."
Wu Huan pouted and angrily grabbed the pillow and beat it.
Lin Sen touched her head and explained with a smile: "Let's put it this way, if you go back to your childhood, and then you choose to commit suicide, can you still travel through time? Or can the intention of committing suicide really be realized? No matter how vivid it is,
One thing, if you go back to the time before your parents met and killed your father, will you disappear? If you disappear, how can you kill your father?"
Wu Huan was confused, but finally touched upon the contradiction. Is there a forbidden area in this spiral of time that cannot be touched?
"So, if time is linear, unique, and unified, then it is not feasible to go back to the past. In other words, our return to the past is a repetition in the development of time. This repetition will not be changed and cannot be changed.
To be changed, unless we escape, use ourselves as the starting point, and create a new timeline!" When Lin Sen said this, on the one hand, he was explaining it to Wu Huan, and on the other hand, he was also demonstrating his own understanding.
Lin Sen vaguely understood something, but why was it me? Why was it reloaded and re-created every time because of my death? Which timeline am I on now?
Or is it that all this reloading is actually a scam in itself, just a trick on memory?
…
If cognition is a circle, then the more you know and the larger the circle becomes, the more problems you will face.
Lin Sen is in this state now.
Wu Huan's small circle was much smaller. She understood a little, but quickly asked: "What about going to the future? Isn't that possible?"
Lin Sen was thinking seriously and did not answer.
Lemidia gave the answer: "Yes, but you will not be in the future you are going to. In fact, this kind of going to the future is more like hibernation. You are separated from the world and fall into a deep sleep. When you wake up, you will
You have arrived in the future, but this is completely different from your naive idea of wanting to see your family in the future. Of course, all of this is based on a premise, which is your unique and unified space and time.
It is also unique and unified in itself.”
Some of Wu Huan's little fantasies were ruthlessly broken. She had always been looking forward to the ability to travel through time and space, but now it seems that it may be just a fantasy...