Gao Zhongxuan looked at the lush greenery outside the car window, holding his chin and thinking.
After the cooperativeization, many rural areas are now in a state where agricultural workers and self-employed people coexist. The retirement and re-employment of agricultural workers have entered the promotion stage.
His grandparents are all still alive, so they have caught up with the last train of biocomputers. If biocomputers are launched in a few years, they may not be able to survive until then.
Although biocomputers cannot increase the limit of human life, they can increase human lifespan.
It seems that these two sentences are a bit contradictory. In fact, the life limit of living things ≠ life span.
Theoretically speaking, the limit of human life is generally believed to be around 120 years old. This is derived from a scientifically rigorous theory, which is the famous Hayflik limit.
The aging and death of the human body originate from the aging and death of body cells. Human body cells will divide, and new cells will replace the aging and apoptotic cells. However, this division is not unlimited.
Normal body cells can divide about 50 times on average, and the cycle of each division is about 2.4 years. According to calculations, the maximum life span of a human is about 120 years old.
So why can human cells divide only 50 times? Is it possible to increase the number of divisions of human cells through technical means?
This requires knowing why human cells can only divide 50 times
Simply put, there is a section of material called telomeres at both ends of genes. Telomeres play an important role in the process of cell replication. They are mainly responsible for maintaining the integrity of chromosomes.
However, in most somatic cells, the length of telomeres is limited. As the number of cell divisions increases, telomeres will gradually become shorter.
When telomeres reach a critical length, gene expression will be affected, causing expression changes, which will lead to cell senescence and death.
This mechanism is the biological mechanism behind Hayflick's limit theory.
Obviously this is a cutting-edge scientific research project in life sciences, and Fang Ge and the others are currently studying technology in this area.
However, even if cells can only divide 50 times, the current average life span of humans has still not reached the limit. [Note: The current average life span of humans is about 65 to 80 years old.]
After the biological computer is implanted, the new human being will not be harmed by diseases, viruses, and bacteria. In addition, the biological computer continuously eliminates harmful substances in the body and maintains human cells.
The life span of new humans can reach the human life limit of about 120 years.
Moreover, a relatively healthy and awake state can be preserved before the cells' Haverflick limit is reached.
Currently, the Institute of Life Sciences of the Academy of Sciences is studying on the one hand to break through the division limit of genetic telomeres, and on the other hand, it is studying stem cell cloning and stem cell repair of brain cells and cardiomyocytes.
As long as there are breakthroughs in these two aspects, human life can truly be improved.
…
Gao Zhongxuan’s grandparents are 76 and 78 years old.
The biocomputer was just implanted some time ago and is now enjoying a second spring.
The agricultural worker retirement system has been implemented in some areas this year. The retirement age is 70 years old, and the pension is currently 2,000 yuan per month.
The reason why retirement is set at 70 years old is mainly because of the implementation of the New Humanity Plan and the human life span has reached its limit.
As a result, retiring at the age of 60 is too early, and some agricultural workers can choose to re-employ or start a business after retirement. Re-employment does not affect the pensions received by agricultural workers.
Just like Gao Zhongxuan's grandfather, after retiring this year, he chose to become a forest ranger.
The bus stopped at the entrance to his hometown village.
"Huangshatou Beicun has arrived." The driver shouted in a loud voice and pressed the door switch.
Gao Zhongxuan, who looked astonished, realized what he was doing and quickly got out of the car with his suitcase and backpack.
After the bus left, he stared blankly at the unrecognizable Huangshatou Bei Village. If it weren't for the big stone monument standing beside the road, which was carving the five characters of Huangshatou Bei Village, Gao Zhongxuan would probably not be able to find his hometown.
.
Rows of small single-family villas and an artificial lake with a radius of no less than 1 kilometer are located on the north side of the village entrance. Weeping willows, euphratica trees, and white mulberry trees are planted on the lake embankment.
On the south side corresponding to the artificial lake is a large glass greenhouse that shines in the sun.
Pulling the suitcase, I slowly stepped into the village road.
In the guard room at the entrance of the village, an old man took off the cigarette rod in his hand and said, "Hey, isn't this the Xiaoxuan of Lao Wu's family?"
"Grandpa Ninth, why don't you go home from the south and have a look? I'll chat later."
The old man took another puff of cigarette and shouted to Gao Zhongxuan: "You kid, don't find the door. Your home is at No. 15, Lane 5."
"Thanks."
After walking more than 200 meters, we saw a swimming pool next to the artificial lake. There were four swimming pools in it.
Many children and teenagers were playing in the swimming pool. This was something that was unimaginable in the northwest, which used to be in short supply of water resources.
During his childhood, he didn't bathe five times a year. How could children like today have the luxury to play in the swimming pool?
When you walk into the residential area, you will see three-story villas. They are not the same kind of Baroque or Western style, but villas with strong local characteristics.
The house absorbs cave dwellings and some local folk customs. Each household has its own independent front and backyard, where flowers, trees, or vegetables and fruits are planted.
No. 15, Lane 5.
He pressed the doorbell.
"Here we come!" There was a sound of hurried footsteps, and a girl of seventeen or eighteen years old opened the big wooden door and shouted in surprise:
"Second brother, why are you back?"
"I bought you a gift, take it." Gao Zhongxuan took out a box from his backpack and handed it over.
"Brain wave glasses! Thank you, second brother." The younger sister happily took them.
In fact, brainwave glasses are not expensive nowadays. An ordinary pair of brainwave glasses costs more than a thousand yuan.
After entering the house, he kept walking around, and his little sister helped him pull his suitcase into the room.
Gao Zhongxuan is a brother and sister, but his eldest brother Gao Zhongmo has already started a family and lives in the small villa next door.
More than half an hour later, the sun was already setting outside.
Most of the agricultural workers in the village have gone off work, including Gao Zhongxuan's parents, but his grandparents do not live with them.
The main reason is that the rangers have staff dormitories. Now that the two elders are in good health and have good hands and feet, they simply live in the ranger dormitories.
One of the two old people takes care of the forest, and the other cooks or grows some vegetables and fruits, living a life in a paradise. This is a portrayal of the life of many retired agricultural workers.
Although the pension is only 2,000 yuan per person, the two people plus the salary of the forest ranger make about 6,000 yuan a month.
It seems that this money is not much, but the problem is that Hua Yuan's purchasing power is now almost three times that of before, and he does not need to worry about his own health, the housing and education of his children and grandchildren.
With a monthly income of 6,000 yuan, even if you travel domestically, you can travel four or five times, and it is a very good tourism project.
There are even many elderly people in cities who are looking for jobs as forest rangers or mountain rangers, so they can live in the countryside. This is a new trend.
After having dinner with his family, Gao Zhongxuan became more and more determined to stay in his hometown. Anyway, living in his hometown now does not affect his work.
In addition, he is also preparing to start some entrepreneurial projects at home.