[The story of the Muba people who almost exterminated the entire planet has not stopped, and their development as they dominate the planet has not been smooth sailing since then.]

[Because a large amount of carbon was absorbed and solidified by vegetation before, the vegetation died and was buried deep underground with geological activities, and the carbon gas content in the atmosphere did not rise to a very high as Muba people expected.]

[As a producer, the Muba people have a long lifespan. Even over time, the Muba people who enjoy the sunshine of almost the entire planet have gradually evolved from thousands of years to ten thousand years. The increase in lifespan brings the rapid expansion of the entire population.]

[History seems to be repeating itself. Less than ten million years after the end of the species extinction operation, the carbon gas in the air declined rapidly with the reproduction of the Muba people. However, all vegetation species were absorbed in the past, but now it has become the Muba people themselves.]

[The thinness of carbon gases has exacerbated the conflict between Muba tribes. All Muba people understand that it is these similar carbon gases absorbing the air.

Of course, they didn't know what carbon was or what carbon monoxide and carbon dioxide was at that time. They just realized that the carbon in the air was quantitative, and that if there were more people, they would have less evenly divided.]

[Tribal wars cannot solve the problem, because the Muba people live too long, and their offspring reproduces once every three years. The number of losses caused by war conflicts is not worth mentioning compared to the number of new generations.]

[The carbon gas in the air has dropped irreversibly, and the survival pressure the Muba people feel is getting greater and greater. Affected by this, the Muba people began to consciously suppress their reproductive instincts and began to reduce the reproduction and birth of offspring...]

"this!"

Seeing this, everyone in the Mars exploration plan got a glimpse of each other, and why was this situation so familiar?

[As time goes by, more and more Muba people began to suppress their reproductive instincts. The growth curve of Muba people's offspring has developed from a slow decline to an avalanche decline, and eventually gradually evolved into a negative growth in population.]

【The Muba people's behavior of inhibiting reproduction is getting more and more intense...】

[We examined a large number of Muba people's fossils during this period and learned in detail about the situation of Muba people at that time. We found that at that time, the reproduction and inheritance of Muba people even had multiple faults, that is, in a period of nearly a thousand years, the reproduction of offspring was less than one thousandth, and some areas were even less than one thousandth.]

[A tribe of ten thousand people has not been born in a thousand years, and even a tribe of ten thousand people has not been born in a thousand years. If the lifespan of the Muba people had not evolved to more than ten thousand years, these few faults alone could have allowed the Muba people to enter species extinction.]

[Hundreds of thousands of years have passed, and the carbon gas content in the air is still in the trough period, and the macro number of Muba people has also dropped by about 35 to 45%...

What's even more terrifying is that we carefully studied the situation during that period and found that in addition to suppressing reproductive instinct, the Muba people's body elements also appeared unbalanced and entered sub-healthy, and their mental state was not so active, their range of activities was narrowing, and their mental state became more and more withdrawn.

They began to gather together in the past, and started a war with the Muba people of other tribes, gradually becoming quietly rooted by themselves, waiting for death alone...]

"East Island Country!"

"Modern humans!"

Seeing this, some researchers of the Mars exploration program finally couldn't help but exclaim.

How similar are the Muba people in the video and modern humans? It’s just that the Muba people are causing this trend because of the increasingly thinner carbon gas and the increasing survival pressure.

However, because of the solidification of social classes, the growth channels for young people have decreased, but consumption is increasing, which has led to the increasing pressure on life, which has led to this trend.

When the pressure of survival and life becomes greater and greater, in order to ensure the quality of life, life will seek benefits and avoid harm and subconsciously inhibit reproduction, and the population begins to enter irreversible aging.

This trend has appeared in the East Island Country decades ago. The proportion of DINKs in the entire society is rising and the population aging is becoming more and more serious.

The Dongdao government has tried all kinds of ways to increase the fertility rate. It has implemented various policies and cannot change this situation. If you can do everything you can, young people in China are just unwilling to have children.

Some scientists in the world have predicted that in another 200 years, the East Island Kingdom may become the first nation to naturally disappear.

Even at this stage, this trend has begun to appear in China. The second-child policy has been relaxed for several years, and even the policies have begun to encourage second-children. The proportion of families willing to have a second child is very small.

What is even more worrying is not only that people born in the 1980s don’t want to have a second child, but more and more people born in the 1990s don’t want to get married, and even after getting married, they are not very willing to have children.

"Lu, Su, do you have any impression of the infinite breeding test of Balb C guinea pigs in history?"

Professor Hill looked at the Muba people in the video, who were basking in the sun, waiting for death in silence without fighting or moving. Lu Yi and Professor Su, who were a little solemn, asked.

"I know that a classic biological reproduction test in the 1960s was also considered a form of existence of large filters.

The fundamental reason for this changing trend is the increase in the survival pressure and life pressure felt by life, and it spontaneously generates a behavior of seeking profit and avoiding harm in order to ensure your quality of life.

Then, under the influence of long-term pressure and reproductive instincts, the health and mental state also change, and begin to gradually weaken or even lose social functions.

To change this behavior and situation, you only need to break the pressure on the people.

Reproduction is an instinct imprinted deep in the genes and a necessity of every life. When the pressure on one’s body is broken, people who do not need to be deliberately guided and have the ability to reproduce spontaneously will start to reproduce offspring.”

Lu Yi took a deep breath and said, "This is a problem of social system, a problem of social science, not a problem that we scientists who study physics, aerospace and the origin of life on planets can consider.

This problem, this big filter, was not able to break it before, and we had no capital to break the increasing pressure on the people, but now we are different. We have been preparing for almost a year, and I think the relevant policies should be almost out."

"This is also the credit of Commander Lu."

Professor Su sighed and said, "If it weren't for the breakthrough of controllable nuclear fusion, the government would have no way to change the entire trend of change. After all, with the progress of the times, people's needs and desires have become increasingly greater.

If the policy subsidies are less, it will not be helpful to reduce the pressure of life that the people feel.

When policy subsidies are high, the national economy will be overwhelmed and resources will not be able to meet.

That is, only when controllable nuclear fusion breaks through can the government have enough resources to regulate and solve this problem. Nuclear fusion is not only the key to the starry sky, but also the new driving force for alleviating social conflicts."

Civilization is progressing, and people’s inner needs and desires are also increasing.

100 years ago, everyone was satisfied if they could eat full every day and wear warm clothes in winter. 60 years ago, everyone thought that they would not have to eat sweet potatoes and sorghum every day, and that they could eat white rice every day.

30 years ago, everyone's demand no longer stopped at white rice, but thought about every week, no, it would be considered happiness to be able to eat a meal of meat every month or half a month.

Today, there are endless fish and meat every day, and I can’t finish all kinds of bright and beautiful clothes. But what I think is a car and a house. With a car and a house, I have another idea, asking for luxury cars, luxury houses, cruises, etc....

The desire for wise life can never be satisfied. This is not only the driving force of civilization, but also the barriers that lie ahead of civilization.

PS: An infinite breeding experiment of mice conducted by American ecologists in Maryland in the 1960s. If you are interested, you can search for the relevant situation.

The inspiration and creativity of this book can be said to be almost all from this experiment. At the same time, this experiment can also explain the sluggish fertility rate of modern humans from an angle. If there is really a large filter, then I think this experiment should be one of the forms of existence of a large filter.

The situation highlighted by this experiment is not only a problem of social resources, but more a problem of social systems and social structure.
Chapter completed!