Time travel often involves several paradoxical issues.

The first is the grandmother paradox. When time travel becomes feasible, if you can go back to the past and kill grandmother, will the time traveler still exist? If you can kill, the time traveler will disappear and there will be no such thing as time travel, so it is equivalent to being unable to kill, which logically forms a paradox.

The second type is the information paradox.

It is obvious in the Terminator that in order to prevent the Savior's mother from being killed, future humans sent a robot to return to the past to save the Savior's mother, and Skynet sent other robots to chase and kill. However, in the end, the government created Skynet because of these technologies from future robots. This means that Skynet technology does not come from the creators of the past, but from Skynet itself. Where did the origin of Skynet technology come from?

Although the third type may not be physically impossible, it is very inspiring. A man went back to the past and went to an orphanage through some disgraceful means, which led to the woman giving birth to a daughter. This incident stimulated the woman to undergo sexual resurgence. By chance, he returned to the past and forced to go to an orphanage. After she gave birth to her daughter, he threw her daughter into the orphanage where time was even higher. The daughter who grew up was forced to be a child one day and unfortunately gave birth to a daughter...

In this story, this man plays three roles: husband, wife, and daughter. He is the husband, wife, and their daughter...

Fortunately, it is not troublesome to solve this paradox problem. If the multiverse theory is introduced, that is, it exists in countless timelines, the paradox problem will be solved smoothly.

"Well, if everything goes according to the plot in the movie, then when I successfully eliminate the existence of the USB flash drive, I will not disappear now, because I have entered another new timeline."

Lu Yuan's closed eyes slowly opened and frowned and said, "The trouble is that I have left the current timeline. Even if I go back to the past and solve the problem, due to the existence of multiple timelines, this timeline will not disappear or change. Then the impact caused by the USB flash drive will continue."

This is exactly the same as he ran away alone and left the mess still in place.

"No, sir, the facts still change."

"If you can really go back to the past and change the timeline, then the current timeline may not become another timeline that has been changed by you."

"Your guess is a bit...

Lu Yuan didn't know how to explain it, so he had to shake his head and said, "You said that if I send the USB flash drive to the future, it would be equivalent to sending the USB flash drive to the earth on another timeline, and our timeline would never have a USB flash drive. Is this a good method?"

It's right. If he returns to the past, it's impossible to bring the USB drive with him. Otherwise, even if the initial USB drive is solved, it still means that the USB drive has not been solved because it is carried here.

Therefore, when he assumes that multiple timelines exist, sending the U disk into the future is tantamount to opening up another new timeline. If he walks along this original timeline, he will not encounter the future U disk.

But all this is speculation.

If there is no multiple universe, then Lu Yuan sent a robot to return to the past and change the future, which means that he would disappear without a trace at this moment.

The fact is that the plot in the movie not only expresses a paradox problem on a timeline, but also has the possibility of multiple universes, which makes things very complicated.

Only one thing can be proved that according to the plot in the movie, in order to prevent such a possibility from happening, he can only take the time machine to return to the past to avoid other accidents.

Faced with Lu Yuan’s question, No. 1 could not give much answer. No. 1’s knowledge system comes from the world of “public enemy of machinery”, and in the world of “public enemy of machinery”, there is no time to shuttle through things like this. In that cosmic view, returning to the past is a forbidden physical law.

Although riding on a time machine and trying to change the world is a crazy idea, after careful consideration, Lu Yuan has to say that this is a good breaking point.

He did what he thought of, and Lu Yuan started preparations within the next ten days.

First of all, because the plot of "Terminator Genesis" has changed, the T1000 robot that had previously pursued the hero and came to the real world, and there was no incident of chasing the hero and his group. However, the story still did not exceed much scope. They still decided to take that simple time machine to the future to prevent the birth of Skynet.

It took Lu Yuan more than two days to take out this simple time machine. This time machine is not too difficult in mechanical structure. Even the robot's chip was quickly cracked by reverse engineering.

In principle, this time machine uses rotation to speed up to a very fast level, and then decomposes matter into a particle state, thereby forming a naked singularity at the center position. The singularity is formed in a very short moment, so that time curves can be generated to make time travel feasible.

What made Lu Yuan feel incredible is that according to this theory, whether it is the energy or gravity required, it is extremely huge and incredible, and it is basically impossible to achieve in reality. As for gravity, at least ten neutron stars are needed to participate. This condition alone makes time travel unfeasible.

However, compared to the existence of USB drives, Lu Yuan quickly got rid of the so-called theory.

He directly imitated the prototype structure of the time machine, and then remade the chip that can control the replacement circuit of the time machine. Compared to the chip that can only be used once, the original work will burn down. With these, this time machine is not only much more exquisite in structure, but also breaks the limit of only being used once, and can fully carry out multiple time travels.

Of course, before the real test is conducted, everything is still in the theoretical verification stage, which does not mean that it will really happen as expected.

While busy improving the time machine for more than ten days, Lu Yuan was also observing the situation outside at the same time.

After learning the truth about the San Annu incident, China naturally could not sit idly by. If it were the case, it might have had to conduct long-term temptations and negotiations because of concerns. Now it has directly brought Russia and revealed some of the news to the UK and France. Even the United States would not turn a blind eye until it faces the negotiation demands of the four permanent members.

This is not the past. Americans can still be tough on this kind of interests. Since it will be the end of the world in seven years, we cannot underestimate the determination of any nuclear power.

The negotiations were in secret soon. Because it was a closed-door meeting and all electromagnetic signals were blocked, Lu Yuan did not get the most detailed meeting information. However, from the indirect touch, we can know that this closed-door meeting did not decide everything that followed, but would start a tug-of-war for the negotiations for at least two months.

The "Horizon Plan" is also the focus of negotiations.

The original "Horizon Plan" was carried out on the premise that the Americans blocked the truth about the wormhole in Saint-Annu. Now, after China, Russia, Britain and France learned the truth about the wormhole in Saint-Annu, it is certainly impossible to implement it according to the Americans' ideas.

Modifications to the "Horizon Plan" are imperative.

"The Americans suffered a big loss."

Lu Yuan was happy to see Americans suffering losses by throwing the tablet aside. The FBI was watching hardcore companies all day without doing their jobs, so it was time for their government to suffer a big loss.

"No. 1, how is the system detection?"

"Sir, the self-test of the time replacement system line is normal, and testing can be carried out."

"Well, that's fine, launch the first test in five minutes."

This kind of time machine cannot transmit naked and exposed non-living substances back. Only by allowing NS-5, which has artificial skin after transformation, can time pass through can it be carried out.

So the first time machine test was to send an NS-5 back to the past!

"Hope it goes smoothly..."

Lu Yuan sighed, and just as he was about to speak, a burst of noise came from behind him.

I suddenly looked back and saw that just ten meters away from the time machine, an electric ball composed of lightning and dazzling light suddenly appeared in the laboratory.

"This, this is..."
Chapter completed!