Survival is the first need of civilization - for a civilization, everything is meaningful only if it continues.

This is true of the Hui civilization, which exists for a longer period of time than the Hui civilization, and even those that were born as early as the early days of the Big Bang.

Because, civilizations that are unwilling to follow the laws of survival have long been submerged in the long history of the universe, and under the big waves and sand, only civilizations that put the survival of civilization in the first place will continue.

The technology of these civilizations can almost be considered to be comparable to that of the gods, and even if the technology is far beyond that of the earth for an unknown number of years, they can only look up to them.

But they also have their own problems that they can't solve, that is, they can't completely avoid death, the death of civilization.

Just like life, life lives in the world, and the corresponding other side is death, with the premise of not measuring time, one day in the future, life will die, it cannot refuse death, the only thing it can do is to continue to prolong its own imminent death.

It's the same with civilization, one day in the future, for some reason, it will go to extinction, and the process may be sudden or gradual.

In order to avoid their own destruction, these ancient cosmic civilizations began to study the demise of civilizations, believing that if they gathered enough information about the destruction of civilizations, they could avoid the factors that led to their own demise in advance—in layman's terms, learning from other civilizations that had perished.

However, after collecting information on a scale of 100 million years, these ancient cosmic civilizations have discovered that the number of civilizations in a limited area does not exceed a certain threshold.

This threshold will vary depending on the scale, but it will always be there.

At first, no cosmic civilization paid attention to this, because they believed that those civilizations that had perished were due to the limitations of material resources or external factors.

Until some cosmic civilizations felt that it was too troublesome to look for extinct civilizations in the universe, they planned to demarcate a cultivation area by themselves, cultivate civilizations by themselves, and then obtain information related to the destruction of civilizations by waiting for the demise of these civilizations.

It's like John on Earth who conducted a rat utopia experiment. Calhon, the cosmic civilization that intends to cultivate a large number of civilizations to gather information on the destruction of civilizations, notices the existence of thresholds.

In order to be able to collect information to the greatest extent, the more civilizations that can be cultivated, the better, so the cosmic civilization has already estimated the maximum number of civilizations in the cultivation area in advance, and the material resources will ensure absolute sufficiency.

However, the result of cultivation is far from what they imagined, and the abundance of material resources has not increased the number of cultivated civilizations much.

The plan of the cosmic civilization is to directly transform all barren planets into ecological planets with complex ecosystems, and as long as there is enough time, intelligent species will naturally be born in the ecological planets, and then intelligent species will build civilizations.

In the end, the cosmic civilizations do not interfere in any way, and observe that these civilizations will naturally go to extinction.

The cosmic civilization has carefully cultivated many planets with complex ecosystems, all the celestial bodies in the cultivation area, solid and gaseous planets, plasma stars, even subatomic pulsars, white dwarfs as stellar remnants, and so on.

All of them have been transformed into planets with complex ecosystems by cosmic civilizations.

However, such a huge number of planets with complex ecosystems have not been able to breed a large number of intelligent species, and after the number of intelligent species surges to a certain number, the surge growth rate will begin to decline, just as the difficulty of ordinary creatures to leap to awaken wisdom increases. Read a book for a long time

Obviously, there are still so many planets with complex ecosystems that don't have determination and intelligence, and it feels like some unknown force is suppressing the wisdom awakening of living beings.

And even if some species awaken their wisdom, they are slow to build civilization.

In the subsequent observations, the cosmic civilization also found that after the destruction of some civilizations, there will be species in the complex ecosystem that have been unable to awaken wisdom for a long time, and those intelligent species that have been unable to build a civilization will ignite the fire of civilization by accident.

There seems to be no correlation between them, but they seem to be related, and the number of civilizations and intelligent species has always been in a relatively stable state.

Until all the complex ecosystems in the cultivation area collapsed due to their own problems, and the number of civilizations seemed to be suppressed by an invisible hand, and no longer showed the initial surge momentum, and maintained a relatively flat trend, the number began to decline sharply.

In the end, they were all destroyed.

This is completely different from the initial expectation of the cosmic civilization, according to their original idea, each planet in the entire cultivation area will give birth to an intelligent species, and the cultivation area will be crowded with civilizations built by intelligent species.

Cosmic civilizations have even come up with a compromise plan to prevent these civilizations from competing for resources because they are too close.

What exactly?

What is the force, or something, that is suppressing the number of civilizations?

What caused the final result to appear the way it did?

The curiosity of the cosmic civilizations that tried to obtain information by cultivating civilization ignited to know why they were the way they are now.

So, they carried out one civilization experiment after another in the cultivation area.

This cosmic civilization, which is more powerful than the technology of the Hui civilization, gives the civilization in the cultivation area rich material resources, a relatively safe environment, strong adaptability, and so on.

However, it is still inevitable that civilizations will go to extinction, and the process of extinction is reasonable, some are due to some naturally occurring super viruses, some are wars caused by certain social problems, and some are destroyed by natural disasters that are suddenly unknown to even the cosmic civilization......

After the 19th civilization cultivation, the cosmic civilization terminated the civilization cultivation, because they encountered danger, some kind of naturally occurring information virus, through the information defense network that they have improved through an unknown number of generations, and the virus is spreading.

Although the cosmic civilization finally defeated the information virus at a great cost, it also completely wiped out the entire cultivation area with a diameter of 3,000 light-years from the universe.

Fortunately, the cosmic civilization is not without gains, and they summarized the results of the experiment and came to the following conclusion - everything in the universe presents a probabilistic distribution, and so is civilization.

Using a coin as an example, a coin has two sides, ignoring the probability of being erected, constantly tossing a coin, and then calculating the probability according to the number of times the two sides appear on both sides, you will find that as the number of times the coin is tossed, the probability value calculated according to the number of occurrences of the two sides will continue to approach one-half.

Then think of the universe as a coin-like object, with a constant probability value, that is, the greater the number of civilizations born naturally, the greater the probability that the existing civilizations in the current universe will be destroyed!