Let you edit sci-fi, where are you exposing magic?

"This..."

Hearing Rick's words, Morty suddenly realized.

It's not that time can't change.

The impact of the change in time is too great!

Civilizations that change their vertical timelines come at a heavy price.

Unlike the space that can be easily changed, the manipulation of time will have very serious consequences!!

And in order to avoid the cascade reaction caused by changing time, this is why civilizations with the ability to manipulate time hardly return to the past.

These seem to have formed an accepted law for those sixth-level civilizations!

Once something happens on the vertical timeline that changes history, a new branch occurs in the vertical timeline.

In those branches, the things that have been changed will continue to happen, or even worse!

Parallel universe, Sakura Country "Five Eight Three".

Nobita looked at the civilizations at all levels that appeared in the projection in bewilderment.

"Doraea, those sixth-level civilizations are already higher-level existences, why can't they all go back in time and you can?"

Obviously, DoraA can go back to the past from the future to help themselves, if those sixth-level civilizations can go back in time to help other civilizations.

Then the number of sixth-level civilizations will also increase greatly, right?

Although Nobita thought so, looking at Doraemon's expression, it was obvious that he could not accept Nobita's words.

DoraA touched her head awkwardly and smiled helplessly.

"Isn't it already said in the description of the sixth-level universe? Going back in time when too much interference in low-dimensional space would cause them to fall out of high-dimensional space. "

"Then won't something strange happen when you come back here from the future?" Nobita looked at DoraA and suddenly thought.

Doesn't Doraemon, who returns to the past from the future, violate this standard, and even Doraemon has been helping him?

"Please!"

"Even if you reach the conditions for survival in high dimensions, it does not mean that all creatures of civilization are willing to live in high dimensional space!"

Doraa looked at Nobita puzzled.

Why is this Nobita, who usually can't even cope with the math exam, suddenly so interested in the division of the level of cosmic civilization?

Space-time theory is a very advanced existence in all civilization levels.

Nobita, he actually understood .....

Looking at Nobita's puzzled look, Doraa added.

"Manipulating time is not a difficult task. Even some top-level fifth-level civilizations can do it. "

"But even if those civilizations do, they will not easily try to change the behavior of time."

Doraa said extremely seriously.

"Why?"

"For them, if it's easy to change the past, why not go through this more convenient way?" Nobita lay down in front of the projection and asked puzzled.

"In the past, it was so easy to change..." Hearing Nobita's words, Doraa broke out in a cold sweat.

"I can go back in time from the future and take care of Nobita because Nobita is not that important in the vertical timeline."

"In other words, Nobita's presence is not that important for a timeline that is constantly flowing forward."

"Even if it changes Nobita's life, it will not have much impact on the development of the subsequent timeline." (Read violent novels, just go to Feilu Fiction Network!) ）

"Otherwise, the time police would have arrested me long ago..."

Doraa looked at Nobita, who was full of curiosity, and explained carefully.

"Huh?"

Nobita on the side, after hearing Dorae's explanation, especially when he heard that Nobita's existence was not so important, was obviously a little frustrated.

"So, Dorae, what kind of future technology can you reach?" Nobita asked curiously.

From the six civilizations that have emerged so far, none of them seem to fit the characteristics of the future world.

"Then keep watching!"

"There are three levels anyway."

Hearing Nobita's question, Doraemon was also a little excited.

As the existence of the future that knows best, Doraemon feels that the lowest level of civilization in the future world must be ranked to the seventh level!

【Level 7 Civilization: High-dimensional Civilization】

[High-dimensional civilization is the ultimate pinnacle of civilization development, in addition to having all the technology that a sixth-level civilization has. The most striking feature is that the ultimate civilization has made a certain degree of use of the causal law of the universe. Going back in time is already something that can be done for them. And in the initial application of the law of cause and effect, the high-dimensional civilization will have many weapons containing the law of cause and effect.......]

[After reaching the seventh level of civilization, the laws of the universe are something that can be easily used for high-dimensional civilizations. Whether it is the shuttle of space, or the shuttle of time and space with minimal causal laws, high-dimensional civilizations can easily do it. Since the effect of time on high-dimensional civilizations is not obvious, the technology of high-dimensional civilizations will have an unprecedented speed of progress. 】

[Individually, high-dimensional civilizations that have reached the seventh level of civilization can easily create a life with self-consciousness and give the real consciousness of machine creation. The creation of clones or super robots is a breeze for high-dimensional civilizations. And because of the complete understanding of the rules of the universe, space will not be able to limit high-dimensional civilizations at all, distance has no meaning for high-dimensional civilizations, only longitudinal timeline time can constrain their actions. 】

[Advanced high-dimensional civilizations can reduce the change in the timeline by going back in time and correcting those changed histories. The biological and physical means of advanced high-dimensional civilizations have been difficult to play a direct role, and the existence of individuals is almost immortal. 】

"Alas! Sure enough, it is a seventh-level civilization. "

DoraA carefully read the description of the seventh-level civilization in the post.

That is Doraea's assessment of the future world civilization level.

Even for the most salient characteristics of the seventh-level civilization, the post is extremely clear.

The main 0.6 gap between the sixth-level civilization and the seventh-level civilization is the use of the law of cause and effect.

For Doraea's civilization, things like going back in time to help Nobita, which almost completely cannot affect the vertical timeline, will also have cause and effect.

However, Doraea's civilization can already use those laws of cause and effect.

For them at the seventh level of civilization, that cause and effect can be almost completely ignored.

But if there are really creatures trying to go back in time and make some big event that can change the subsequent development of the universe.

Time police, independent of the vertical timeline, will go back in time and revise things that change time.

Therefore.

The gap between the seventh-level civilization and the sixth-level civilization is actually not particularly large.

For such a rating, Doraemon is not surprised.