"I got his information from the old monk again, but I couldn't find any trace of him in this world. Ye Buyu touched his nose, and it was difficult for him to describe his current state of mind: "If I'm not mistaken, you people who have traveled through this world have replaced yourself in an alternative way." So, each and every one of you is actually real here. But only Pei Yu is different. This only says one thing! ”

Li Nuoyi swallowed her saliva nervously, she felt a little dry in her mouth, and simply picked up the bitter coffee on the table and drank it down.

The silent words continued to pour into his ears: "In fact, there have always been only 9 people who have crossed over. Pei Yu has always been an extra one! But he has been following you all along, and the purpose is now clear, for the sake of what is in the box in front of you, this milky white mysterious bead. ”

Li Nuoyi lowered her head, she was in a trance. The girl didn't care if Pei Yu was an extra person, nor did she care about his goal. She was just thinking about a terrible thing, something that subverted her outlook on life and values, and even made her feel cold to the bone, and she had no desire to live anymore!

It is already a sure thing that I have crossed the parallel space of the plural number. The mysterious seven painted on the photo, whether it is the number of times he has crossed it or not, has one thing that has always been firm, but it is faintly shaken!

"I think Pei Yu is probably not human." The words of the night were as distant as a voice from another world: "Maybe maybe it's even the culprit who traveled through parallel space several times in your dream." Maybe kill him, and you'll be able to return to the world you came from. Of course, this is just speculation, and the probability of operability is not higher than 3 in 1,000. ”

"There's one thing I've always wondered about." Ye Bu continued: You have traveled seven times, and you may have traveled countless times. Since you can go through the tunnels countless times and enter parallel worlds countless times, why only this one time has the last memory? Is the rest of the memories really erased because of the laws of physics? Countless times of travel have not killed a single person, but in this world, three have died. It really doesn't make sense! ”

"Hey, Noi, hey! What happened to you? Suddenly, I found that Li Nuoyi's face was pale, and her indescribable face was covered with a layer of dead gray at some point. Ye Buyu was startled, and hurriedly reached out and shook the girl's shoulder.

"Ahh Li Nuoyi finally came to her senses, she looked at his face with confused eyes, then pinned a strand of hair hanging down behind her ear, and said softly: "I was thinking about something just now, thinking far away." ”

Her tone was understated, but her mood was still terrible, and her body was still shaking. Ye Bu looked at her worriedly, as if he had thought of something thoughtfully.

Li Nuoyi tried to calm his mind, and his trance-like emotions were slightly eliminated: "Regarding what you just said, I believe you have already guessed. I guessed a few too! Do you know the most famous refutation of time travel, Grandmother's Law? ”

"Of course I do." Ye Bu nodded silently: "It's a very troublesome law." Physicists once hypothesized that if we went back in time and killed our own mother or grandmother, where would I come from? Since I don't exist, who went back in time and killed my mother or grandmother? This chaotic logic is known in the scientific community as the "grandmother's paradox". It is also the most commonly cited theory by scholars who support the impossibility of time travel. ”

"Yes, if you get caught up in the 'grandmother paradox', it will become a never-ending loop." Li Nuoyi sighed: "Later, someone suggested that if you can travel to the past, there are only two options. One is that you can intervene in history, and the other is that you can't intervene in history. Many scientists tend to believe that history cannot be interfered with. Why can't history be intervened? The reason is simple, the laws of physics must prevent you from intervening in history, and you can't do it if you want to.

That is, if this person goes back to the past and kills his grandmother, then the woman you kill is definitely not your grandmother, because the past that has changed in the future is the past that we have experienced now, and if you meet the future you, then you must go back to the past in the future. ”

"That's true. For example, if you sing in a KTV, if you put the microphone too close to the speaker, a sharp and piercing sound will come out. Ye Buyu agreed: "If you don't move the microphone away, the sound will get louder and louder." Because the sound coming from the microphone is enhanced by the speaker, then it goes into the microphone, and then it is enhanced by the horn. up to the limit of the horn's endurance. If the limit is reached, the laws of physics will make the horn explode entirely, ending this endless loop. The same applies to time travel. If you want to intervene in history and create paradoxes, you will cause the collapse of the universe. ”

Ye Bu paused: "But the universe will definitely not collapse because of you, because the laws of physics act on all aspects, and it will wipe you out when you affect it!" ”

"This is it!" Li Nuoyi's voice suddenly raised a scale: "What if the same laws of physics also apply to parallel worlds?" ”

Ye Bu snorted violently: "You mean, after you crossed over, for some reason, it affected the parallel world, and even caused the collapse of the universe. So it's under attack by the laws of physics? It wants to wipe you out? ”

"Quite possibly!" Li Nuoyi looked at the milky white beads with a dim light circulating in the box: "No, maybe the laws of physics have already done this. The three people who died inexplicably may be the first to threaten the laws of physics and even cause the collapse of the entire world. ”

"It's a little hard to understand." Ye Buyu was a little confused: "What did they do more than you?" ”

"Dropper was a discordant couple with Shui Ye in the original world, but he was already married in this world. I read the police transcript you got of it saying that her wife had been talking to him the night before about having a baby. The next day he had a broken heart muscle and died. It's weird! I guess it's the act of having a baby that has the potential to break the laws of physics. Li Nuoyi slowly analyzed.

"As for the East, she is already dead in this world. How could a dead person still be alive, unless, she also violated the laws of physics. ”

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