Manual of Space-Time Interference

"Dialect classmates, have you ever learned about dimensional space?" Old Professor Lin said as he held up his reading glasses. This is a professor of physics at Jinghua University who is over sixty years old, and is deeply loved by Jinghua University students.

"Professor, I used to have a certain understanding of the theory in this area, but I found myself very vague about these theories, and some problems could not be solved at all."

He has been insomnia for two days after reading the news about Cao Cao's tomb in Dialect. He has been to the library and collected information on the Internet, but he found that he cannot explain this problem from a scientific point of view.

"Students from Dialect, although studying is good, you still need to pay attention to rest." Professor Lin looked at Dialect's deep-set eyes and urged,

"I'll explain to you the concept of dimensional space as we know it now. If you have any doubts, let me know."

"Yeah." Dialect responded to Professor Lin.

"Scientific theory holds that zero dimension is a point." Professor Lin took out a piece of white paper, tapped it with a pen, and marked o next to it.

"This point has no three concepts of time, length, width and height. If we make this point move, it becomes a line." Professor Lin took the pen and extended a straight line from that point, marking it on x.

"This is a one-dimensional world, with only length, no width and height."

Professor Lin glanced at the dialect he was thinking about, nodded, and continued without rushing:

"If we bifurcate a straight line y at any point of this line, it becomes a two-dimensional world - a plane, with the two concepts of length and width.

"Then we add a concept of height to this two-dimensional space. This constitutes the three-dimensional space in which we live."

Professor Lin drew a straight line z perpendicular to the xoy plane at point o, took a sip of the tea on the table, and continued:

"The next four dimensions are to add a time axis to this three-dimensional basis. In short, it is the collection of the past, present and future of our world." Professor Lin re-drawn a straight line on the paper, in the Mark the past, present, and future on a straight line.

"Now we are sitting in the office at this point on this timeline, and this point is a three-dimensional space. Dialect students, can you understand?"

"Speaking of five-dimensional space, let me ask you a question, what did you eat last night?" Seeing the dialect nodding, Professor Lin paused and asked.

"Small fried pork." Dialect replied quickly.

"What if you ate fast food in the cafeteria last night?" Professor Lin smiled and continued,

"Look, at this point in time, one of you went to eat small stir-fried pork, and one of you went to eat fast food. In this way, at this point in time when you eat dinner, if there is a disagreement, a new timeline will be extended. "

"And there may be countless bifurcation points on a time axis, extending out countless time and space. We call this set a five-dimensional space, like this, like a tree diagram."

After Professor Lin finished drawing, he handed the drawing to the past and looked at the dialect quietly. He knew that the student already had questions at this time.

Dialect looked at Professor Lin, thought about his first time crossing, and asked, "Professor, if a person goes back to ancient times and doesn't have contact with others, he will only stay there for a while without even leaving any traces. So how will the development of this parallel time and space change?"

"We assume that a person goes back to ancient times, and then immediately returns to modern times, and stays infinitely close to Planck time (the minimum interval between time quanta), then his influence on this new bifurcated space-time is infinitely small."

"As far as I am concerned, the development and changes of this parallel space-time are basically no different from the universe before him. It can be regarded as two approximately parallel time axes." Professor Lin thought for a while and answered the question of dialect.

"Professor, if a person goes back to ancient times and kills Qin Shihuang when he was a child, will he return to a time and space without Qin Shihuang when he returns to modern times?" Dialect immediately asked the question he cared about most.

"I will briefly tell you the grandmother paradox. If a person goes back to the past and kills his grandmother, then his mother will not be born. Think about it carefully, will he return to the time and space without his own mother? ?" Professor Lin asked rhetorically.

"Probably, no."

"But if a three-dimensional person A has the ability of six-dimensional space, A travels to the past and kills his grandmother, and then finds the time and space without his mother in many four-dimensional spaces, and uses his six-dimensional ability, If you replace yourself with another person B in this three-dimensional world, then does A return to the original time and space? Or go to a changed time and space?" Professor Lin continued to ask.

"Our understanding of the future of three-dimensional space is only a theory based on existing scientific thinking. This universe has too many unknowns and wonders that we cannot explain now." Professor Lin sighed.

"You can go to the library to borrow Professor Stephen William Hawking's "A Brief History of Time". After studying it carefully, come to my office and tell us what you think."

Dialect was silent for a while, bowed to the professor, and left the office with the blueprint.

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There is nothing that can't be solved after one time crossing. If there is, it has been experienced twice, not to mention the dialect that has experienced three times...

There are three bags of unfinished compressed biscuits left; no mineral water left, 6 power banks, clothes for each season, three books, quilts...

Dialect faced the notebook in his hand, opened his backpack from time to time, and carefully checked what he had left. Whenever he checked an item, he would cross out an item with his pen.

"It's done!" Fang Yan stood up, shook his sore legs, and checked the time. At this moment, there were still 4 hours before his return.

After packing the tent, cleaning up the remains of the fire in the cave, and then searching carefully in the cave to make sure that nothing with a modern atmosphere was left, Dialect put on his backpack and came to the forest outside the cave. Sit down and stare at the clear sky.

Existence is reasonable, everything that exists has a reason for its existence, and everything that exists can find its reason for existence. Suddenly, the dialect thought of this sentence of Hegel.

Then, what is the reason for my existence? What is the meaning of my existence?

I'm just an ordinary person, and I just want a normal life.

Gradually, the horizon began to blush, and Dialect stood up, took a deep breath of the air without PM2.5, and finally took a look at the lush forest around him and closed his eyes.

Consciousness, began to gradually disappear...