It was as if he had returned to his college days, because for Fang Yan, in the next period of time, before the construction of the moon base was completed, he would have to stay in the Spark base to work, and his job was to study.

However, surprisingly, the teachers are all young people, both male and female, but once you think about the ultimate goal of the Spark Project, there is not much of a problem.

Gender balance is also indispensable for educators, because it is a powerful guarantee to ensure the continuous generation of civilization, so the Spark test program will definitely focus on the elite under the age of 25.

It's like teaching dialect math to a male teacher who is only 23 years old this year, while teaching physics is a female teacher who is 22 years old.

The advantage of young people getting together is that there is not so much estrangement in speaking, and it is easier to get acquainted, although there will be some small problems in class, and the effect is not as fast as those senior educators, but it gives people a general feeling, which is still quite comfortable.

The content of the class is actually more basic knowledge, which is a bit backward compared to the most cutting-edge theories in academia, but it is just right for dialects - at least you can understand what they are talking about, and you can have your own understanding.

Time flies by in a hurry......

Roommate Li Jie is still like that, going out early and returning late, he never seems to be angry, and he seems to be the kind of forever sad, but when you are really familiar with it, you will find that his life circle is actually quite small, and there are few friends, and then I found out that what did Li Jie say, in fact, it is quite suitable to be a friend, the kind of friend who is a little sullen.

"Li Jie, how do you look at this?"

Late at night, after 10 o'clock in the evening, Fang Yan pushed the physics test paper left in front of him in front of Li Jie, and Li Jie also put down the tablet in his hand and looked at it patiently.

"This question, you see, starts here......"

One spoke slowly, asked from time to time if he understood, one listened patiently, nodded and shook his head from time to time, and then asked some questions.

After a long time, Fang Yan put away the physics test paper, looked at the time on his watch, and it was now close to eleven o'clock in the evening, and the autumn breeze outside the window brought a hint of coolness, which made people unconsciously tighten their shoulders.

"By the way, Li Jie, did you think about the question I asked last time?" Fang Yan turned his head to Li Jie, who was visiting information, and asked.

"Is time travel feasible?" Li Jie raised his head slightly and asked, and then stroked the frame of his eyes with his hand, which was the eye he had equipped for a period of time in the future, which could assist in research and protect his eyes.

"yes, don't tell me you forgot." Fang Yan asked as he leaned back on the sofa relaxedly.

"How can I forget what my brother asked!" Li Jie replied with a smile, but judging from the slightly embarrassed facial expression, it didn't seem to be consistent with what he said.

"Okay, I'll listen!" Fang Yan elongated his tone pointedly, and looked directly at Li Jie next to him, waiting for his answer.

"Forehead......" Li Jie paused slightly, but after the increasingly intense research schedule, his brain would always make him selectively forget something, including the question of dialect that he asked one month ago.

"Let me think about what to say to you." Li Jie's facial expression also began to calm down.

The room became a little empty, and under the cooperation of the two people, the originally simple and monotonous room also had some other things, such as the fitness equipment that made Li Jie feel painful, and some things that could be entertained, as a leisure for the two of them after work.

"Let's start by separating time and space." Li Jie spoke, then pondered for a while, and explained again, "Because time can only be used as a single axis, in all senses, it is special, it does not belong to anything, but it can be felt by anything conscious. ”

nodded, Fang Yan did not reply, but quietly waited for Li Jie's explanation, from all angles, it seems that Li Jie is also one of the candidates in the Red Army?

"Since you don't have much in your head, I'll try to explain it in layman's terms." Li Jie smiled, then became serious again, and after a while, he replied, "If you want to discuss time and space, you can't get around the dimensional space, but this thing is very complicated, and our current academic community is also arguing, but there has never been a definite answer, so we need to start from another angle." ”

Li Jie paused again as he spoke, looked at the dialect and nodded before continuing, "Let's make an affirmation first, that is, to affirm that we can travel through space, because this can be achieved through technology in the future, that is, simply shuttle from one point in the universe to another, but there is no change in time in this process, we are still in this universe." ”

"No, this space refers to parallel universes, and space shuttle refers to space shuttle between parallel universes." Fang Yan shook his head and explained.

"Hmm!" Li Jie replied softly, then dragged his chin with his hand and thought again.

After a long time, he spoke again, "Your question is very sci-fi, or too much beyond reality, because we have been discussing the possibility of time and space travel in our own cosmic space, not between parallel universes. ”

"So, if it's a parallel universe, how can we explain it, like I'm from now. Traveled to the parallel world of 2017. Fang Yan asked.

"Hypothesis, we start everything from the perspective of assumptions, and if you look at the relevant theories, you will find that in fact, the universe in which we live can be regarded as a cell, which we briefly describe as the cellular universe." Li Jie looked at the dialect and said, "And the creation of parallel universes, you can see the division of cells, because they all develop from a fertilized egg cell. ”

"Very vivid!" Fang Yan nodded in understanding, and then thought about the situation he had experienced and asked, "Then is there a possibility that there is an exchange of information between universes, as if we have succeeded in resisting aliens in this universe, and other universes will also succeed in resisting." ”

"If this is the case, then it can be seen that there is cell-to-cell communication between the universe, and if it doesn't, then there are many reasons, such as the cosmic membrane isolating the transmission of information between them."

Li Jie spread his hands and replied, and Fang Yan was silent for a moment, remembering what happened to him, and he was very sure that there was an exchange of information between the universes.

"And if there is an exchange of information, then it is also possible to travel between parallel universes, that is, from this universe to another universe." Li Jie spoke again, "And if there is no information exchange, then it is impossible, to use a figurative metaphor, you look at the closed box, which itself is a kind of information exchange, so we can invent space equipment, and transmit things into it." ”

"But." Li Jie paused, and then said again, "If you don't have this communication between information, you can't transmit things into it, to put it bluntly, the universe is made up of information, if you can change the transmission and content of information, then you may become a god, just like I am holding a glass of water, if you rewrite this thing, rewrite it into a time bomb, then it is a time bomb." ”

"Isn't this a fantasy?" Fang Yan asked.

"No, this is science, we are just talking about the feasibility of this thing from all angles, just like physical and chemical reactions, before we stayed at the simple composition of matter and the transformation between matter, and now we are looking for how to change the nature of matter."

"And how do you explain time travel?" Fang Yan nodded and asked again.

"Let's make sure of one thing first, you can feel the existence of time, and the cells in your body also have time, so from another perspective, how can you, who have countless time, travel through time completely?" Li Jie asked.

"And what would it be like if it really crossed over?" Fang Yan asked.

"Then, you are no longer a creature of the same latitude and level as us, and the reason why you are still a human being is because of the limitations of the universe...... Under...... Under...... Next ......"

The originally clear language became stuttered in a blink of an eye, and a finger trembled and pointed to the place where Fang Yan was originally sitting,

"Next...... Under...... Syllable! ”

A slap was very loud, and the breath of air was finally relieved by Li Jie, and on the face with a hint of Chinese mixed blood, it was also full of incredulity at this time,

"Dialect, it's still not there, squeak if you're there, I'll give you all the monthly passes and recommended tickets, don't scare me......"

Li Jie shouted all over the room, but didn't get any response, the things in the room were still those things, even the place where Fang Yan was sitting just now still had a little residual warmth, he exhaled a few more times, and then patted his head, took off his glasses, and quickly connected to his personal computer.

"By the way, Li Jie, did you think about the question I asked last time?"

The picture was quickly adjusted to the beginning of this conversation, Li Jie wiped his eyes with his hands, leaned over, and almost stuffed his head into the light screen.

"Smack!"

A slap sounded again, and the two slap prints, one left and one right, were very symmetrical, Li Jie took a breath, and then constantly adjusted the magnification to play back and forth the content of those seconds......

"I'm Cao!"