Han Shuo recalled the contents of the book "A Brief History of Time" and typed the following text on his keyboard: "At the time of the Big Bang, the volume of the universe was considered to be zero, so it was infinitely hot. However, the temperature of the radiation decreases as the universe expands. At this point, you have no doubts, right? ”

"Yes, it's lowered," David replied quickly, "I don't have any doubts, MR Han, continue please." ”

"Well," Han Shuo replied to David, "I don't think I need to talk about the rest of the question, in short, in the end, the central region of the star will collapse into a very compact state, such as a neutron star or a black hole." The outer regions of a star are sometimes blown out in a huge explosion called a supernova, which makes all the stars in the galaxy look dull in comparison. Heavy elements produced by some stars near the end of their lives are thrown back into the gas in the galaxy to provide some raw materials for the next generation of stars. I think, by this point, Mr. David, you already know what I'm talking about, right? I don't need to go into the rest, right? ”

Han Shuo believed that with David's comprehension ability, he could completely analyze what he was going to say next, after all, he was a famous physicist. Therefore, Han Shuo didn't want to continue wasting words on this issue, he wanted David to understand for himself.

David on the other side of the network deposited about five minutes, and during this time, only netizens who stayed up late and did not sleep replied one after another.

After about five minutes, David replied, "MR Han, you don't have to continue on this question, I figured it out." Can you move on to my remaining questions? What exactly happens in the very early or very late stages of the universe, when the gravitational field is so strong that quantum effects cannot be left unconsidered? Is there a beginning or an end to the universe? If so, what do they look like? ”

"Mr. David. I have memorized the remaining questions of yours, and I haven't forgotten," Han Shuo replied, "To answer these questions, I have to talk to you about the singularity theorem." Mr. David, you as a famous physicist. Surely you know the singularity theorem, right? ”

"Well, I know," David replied, "the singularity theorem states that if the classical theory of general relativity is correct, the beginning of time is to have infinite density and infinite space. ”

"Yes, this is it," Han Shuo tapped a few words on his keyboard, "one can imagine that there are new laws that hold up at the singularity. But, Mr. David, ask you to consider the question, is it very difficult to even formulate such a law at such an unruly point? ”

Han Shuo's question made David, who was far away on the other side of the ocean, stunned, and then fell into deep thought.

At this time, netizens couldn't sit still when they saw that David didn't reply. have expressed their opinions online.

"Why didn't David reply? Did he not agree with Han Shuo's theory? ”

"I think David should have been impressed by Master Shuo's theory."

"I'm sorry, the conversation between Master Shuo and David is too professional. I don't understand it at all! ”

"I don't know how powerful I am!"

"Anyway, how do I feel that Shuo Ye's words are about to turn next? I vaguely felt that what Shuo Ye said next might shock everyone. ”

"I feel that David should have been shocked by Shuoye's unique insights in physics, otherwise he wouldn't have been without speaking for so long."

"To be honest, as a graduate student majoring in physics, I can't fully understand the specific meaning of what Shuo Ye and David said, so I can only barely see a rough idea."

"Oh my God! Who would have imagined that a domestic artist would discuss such profound physics knowledge with famous foreign physicists? Oh, my God! It was so unexpected. I feel that this is a plot that is difficult to appear in novels, but Shuo Ye did it, he is really amazing. ”

"You say, is it possible that David thinks that what Shuo Ye said is unreasonable, so he simply went to sleep. Don't care about the master? ”

"Upstairs, what are you thinking? Is there a time difference between David's side and ours? Isn't it the middle of the night over there? It's daylight over there, what are they sleeping? I think David may have been shocked by Shuoye's theory, and he didn't digest it for a while, so he didn't reply immediately. ”

"I've always loved studying physics, so I've always loved David. Now that I see David and Shuo Ye discussing physics problems together, I suddenly feel that Shuo Ye's image in my mind is much taller. In the future, I will support David and Shuo Ye together. ”

"David hasn't replied for a long time, what's going on with him? Did you suddenly do something else, or were you shocked by Shuoye's answer, or were you not interested in Shuoye's answer? ”

"By the way, I suddenly found that David speaks Chinese well, have you noticed?"

"Khan! Upstairs, did you know about the fact that David spoke Chinese well? ”

"Well, you say, 'Why did David go?' Why didn't he reply? ”

Netizens were talking, but David completely ignored these comments, he was sitting in front of a computer on the other side of the ocean at this time, carefully studying what Han Shuo had just said. Han Shuo's theory was really too special, and he could tell from the paragraph that Han Shuo had just replied to him that Han Shuo was trying to overturn a view that had been recognized by the physics community for a long time. You must know that this is not a trivial matter, Han Shuo is really courageous!

Seeing that David didn't reply for a long time, Han Shuo replied again, "And from our observations, we haven't gotten any hints as to what these laws should look like. What the singularity theorem really shows, however, is that the gravitational field has become so strong there that quantum gravitational effects have become important and classical theories can no longer describe the universe well. ”

Sure enough, Han Shuo still challenged the classical theories in the physics community. At this time, David on the other end of the computer had already stood up from his chair in shock, and couldn't help but say, "Itstoocrazy!" ”

"Itstoocrazy" means "too crazy", and the reason why David said such a sentence was because he felt from the bottom of his heart that Han Shuo's words and deeds were too crazy. Han Shuo's sentence just now, "Classical theories can no longer describe the universe well", is simply to say that I think this classical theory in physics cannot describe the universe well, so I want to question this theory, and I want to launch my own theory. That's why David said that Han Shuo was too crazy. (To be continued......)