When scientific research gets stuck in a dead end or becomes absorbed in a certain direction, it is easy to lose sight of the initial purpose, and then the research becomes uncontrollable.

"Dictatorship?" Hearing Keisha's absolute statement, Lin Yu frowned slightly, thinking of a familiar word.

"To judge and make decisions from the perspective of the supreme deity and to protect civilization is not dictatorship. Of course, in the eyes of others, it may be described with even worse terms."

“God is steadfast and will not be swayed by the words of others, child, but this is only the way of the Lord God.”

“But scientific research is different. I remember when you first possessed dark energy, you interfered with gravity to achieve acceleration and flight. Your thinking back then was not like it is now.”

"To put it bluntly, due to the influence of the environment, the technology you pursue has changed, and some fundamental things have been overlooked."

As Keisha spoke, she raised her hand, picked up her teacup, took a sip, and said nothing more.

"Huh?" Lin Yu, who was waiting for the rest of the story, was taken aback. Why did she suddenly stop talking?

"Hmm?" Lin Yu hummed in his mind again, but still received no response from Keisha.

After thinking for a moment, Lin Yu entered the dark dimension and saw Keisha, who looked like a little adult, making tea.

"Wait... let me do it!" Lin Yu raised her hand to stop her, immediately stepped forward, took the kettle from Keisha's hand, sat down opposite Keisha, and began to make tea.

After a series of actions, Lin Yu placed the poured tea in front of Keisha and looked at her expectantly.

“I said ‘absolutely’ because even if you’ve seen it with your own eyes, you still believe that time travel is impossible. Under this premise, your research direction cannot possibly be related to time travel.” Looking at Lin Yu’s expression, Keisha shook her head and said.

“Traveling through time is indeed impossible, no, to be precise, traveling back to the past is impossible,” Lin Yu explained matter-of-factly.

If time travel were possible, the first thing to be destroyed would be the universe as a system. If the total mass-energy were altered, the universe would inevitably collapse in the next moment.

"Who says you have to travel back to the past? Is it possible to change the flow of time and indirectly travel to the future?"

Keisha spoke calmly, then picked up her teacup, took a sip, and drank it all in one gulp.

"And then?" Lin Yu immediately took the teacup from Keisha's hand and poured her another cup.

This is a real boss, she's got real skills and she's very honest. Lin Yu has to serve her well, just like serving her daughter.

"To understand this question, we first need to understand what kind of circumstances allow us to travel to the future." Keisha was pleased with Lin Yu's thoughtfulness and continued.

“Gravity and speed,” Lin Yu replied.

"Yes, gravity causes spacetime to curve. You know this very well. If a person stays in a black hole for a while and then comes out, it may be thousands or tens of thousands of years later."

"Or, if accelerated to the speed of light, this person's time would slow down, and by the time they return, a long time might have passed." Keisha described the two scenarios in the simplest language.

“First of all, I didn’t feel any change in gravity. Also, reaching the speed of light is more difficult than changing gravity.” Lin Yu frowned.

"Furthermore, I can confirm that my personal time has not accelerated, unless he has accelerated the entire universe, but that is even more impossible. If he has such an ability, what ultimate fear would he be afraid of?"

Keisha smiled and said, "What if he accelerated the galaxy, altered its timeline, and combined that with some other technology, created an illusion for you?"

"Other technologies? Illusion?" Lin Yu muttered to himself, subconsciously thinking of the Klein bottle.

In the original story, Du Qiangwei used this Klein bottle to achieve the ability to "travel back in time".

Lin Yu had previously deduced that this was not a journey back to the past, but rather that space used algorithms to allow Du Qiangwei to see scenes from the past.

Furthermore, this footage was edited by a space director, creating a scene so realistic it could be mistaken for reality.

Therefore, it is possible that the clone was destroyed after the Void Controller was shut down, but the images it saw afterward were all fake.

The real situation was only obtained by reading dark data, but it seems that time acceleration is not needed.

"I think you've figured something out, but what would you think if I told you that I was just making things up?"

Seeing Lin Yu deep in thought, Keisha was taken aback, then laughed and teased him.

"Uh..." Lin Yu was speechless. She looked at Keisha and asked, "Are you He Xi?"

He had just been preparing to delve into the limitations of the Klein bottle in space.

And then you said you were talking nonsense!

"Give it to me!" Lin Yu snatched the teacup from Keisha as she reached for it, drank it down in one gulp, and then stared at Keisha with a deep gaze.

"Don't you feel like your mind has been opened up? You clearly just thought of a possibility, didn't you?"

Keisha looked at Lin Yu, who seemed like a child, with a helpless expression and teased him with a smile.

Well, it seems that's true. Lin Yu even thought that while traveling back in time on a macro level is indeed impossible, it might be possible on a micro level.

On a macro level, there is no past, and the future does not exist; there is only the present. On a micro level, the past, present, and future exist simultaneously.

Yes, that's quantum theory.

Quantum entanglement ignores space and time, so killing one's own clone in the past is theoretically feasible.

Lin Yu had initially learned about quantum theory and had even collected a large amount of related materials.

Many seemingly absurd thought experiments ultimately lead to the conclusion that the world is fake.

The most basic theories include the double-slit experiment and Schrödinger's cat.

The most mind-boggling experiment is the delayed-choice experiment, which is an experiment in which the present can change the past.

In simple terms, the delayed-choice experiment involves a beam of light passing through a semi-transparent mirror placed at a 45-degree angle. This results in two beams of light: one transmitted and one reflected.

Add a reflector to each of the two light rays' paths to converge them to a single point.

According to the properties of light, light will pass through in both directions.

However, if a semi-transparent mirror is placed at the intersection of the two light rays, it will be found that the path of the light rays is changed, which is equivalent to changing the outcome of the choice.

The choice comes first, the result comes later; in terms of time, it means that the present has changed the choices of the past.

(Those interested can search for "delayed choice experiment".)

"Actually, I'm saying all this partly because I don't want you to get too hung up on this research, and partly to remind you."

Keisha paused here, looking quietly at Lin Yu.

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