Chapter 381

The "theory of chemical origin" holds that life is native to the planet and evolved from inorganic substances. It divides the origin of life into four stages: first, the stage of generating organic small molecules from inorganic small molecules; Second, from organic small molecular substances to biological macromolecular substances; Third, from biological macromolecular substances to form multi-molecular system; Fourth, the organic multi molecular system evolved into primitive life.

The most important point is that genetic material that can replicate itself. At present, only DNA and RNA are found on various planets. Perhaps human beings are too ignorant and have not experienced enough planets, or perhaps this is a cosmic fact.

Some people think it's incredible. Why do different planets have substances with the same structure? In order to better explain this, there is a very famous mathematical game called "life game".

The basic idea of "life game" is to give an initial configuration, and then formulate some basic rules to observe the evolution of life. Will there be a series of similarities.

At the beginning, all cells were randomly distributed in large square grids, and the evolution rules were very simple, with only four.

1, "too small population": any living cell will die if there are less than 2 living neighbors around it.

2, "normal": if any living cell has 2 or 3 living neighbors, it will continue to live.

3, "overpopulation": if any living cell has more than 3 living neighbors, it will die.

4, "reproduction": if any dead cell has exactly three living neighbors, it will survive.

Such simple rules will evolve extremely complex dynamic images, and these dynamic images will form very strange dynamic laws.

What do you mean?

In other words, through this game, it is explained that some very simple rules can evolve extremely complex structures, which actually has a lot in common with the birth and reproduction of life.

The craters and seafloor of each planet are almost the same. High pressure and humid complex environment provide the same rules for the birth of life.

Under these rules, simple organic matter is randomly combined into complex organic matter.

These complex chemicals can further synthesize self replicating genetic materials such as DNA and RNA, which explains the universality of life in the universe. It also explains why all organisms encountered by humans have genetic material.

Even though there are great differences in the types of genetic material, they are still genetic material centered species.

"Unfortunately, we have not found the original DNA and RNA, that is, the simplest genetic material that can replicate itself... Otherwise, this hypothesis will really become a theorem."

This discussion was initiated by Professor Yamamoto of the illusory laboratory and some geography experts who conducted scientific research on Riley.

Zhang Yuan sat down, just an ordinary audience.

He frowned. He didn't know what Yamamoto was going to say, so he raised his hand and directly asked, "Professor Yamamoto, time is limited. I want to ask what you said about the extinction of life. Is there any scientific experiment on Riley civilization without approval? Especially the biological virus experiment... "

"You should know that although our current law has no content on alien civilization, this is a big loophole. But random biochemical experiments are not allowed by morality... "

"Captain, I know, I know, I swear I won't make mistakes in this regard." Yamamoto was a little impatient when he stood on the stage. Maybe it was because there were too many black histories. People around him were suspicious.

He quickly replied, "listen to me first. It won't take up too much of your time."

"An example I just gave, the game of life..."

Various patterns about the "life game" are displayed on the screen. "There are 256 rules in this game. Under each rule, the final result is different due to different initial conditions."

"But the laws it can form are still limited. They are: change ends in a constant image, periodic change, image change is almost random, and there is a certain complex law in the image."

"If this two-dimensional game is compared to a civilization in a two-dimensional world, can it be understood as follows: change ends in a constant image, which is equivalent to the complete class solidification of a civilization, and civilization will no longer change."

"There are periodic changes, that is, the phenomenon of historical reincarnation. Although the image is dynamic, there is no progress. These two categories are all mediocre civilizations considered by the history of new civilization. "

"Only when the image changes almost randomly and there is some complex law in the image, can it have the possibility of non mediocrity. Our new civilization historiography just wants to penetrate this kind of complex laws... "

"Let's not forget that there are only a few simple rules that support the operation of the life game. And we usually believe that the laws that support the operation of the universe should also be concise. Can we get some inspiration from it? "

Zhang Yuan frowned and thought. Yes, this is only the simplest two-dimensional image. The real cosmic civilization is much more complex than the two-dimensional image... But in some ways, can an individual civilization also be compared to a three-dimensional geometry composed of certain laws?

This is a very novel perspective, and many mathematicians have fallen into meditation.

But it's too hard to really crack these mysteries.

Yamamoto changed the subject and continued: "by the way, everyone, this meeting is not about the history of new civilization, but about the impending spontaneous mass extinction of species on this planet."

Mass extinction?

A few people at the bottom have just heard about this topic and come back to their senses.

He didn't show off. He took out a finger thick and thin, wood like thing from a box and started the experiment on the spot.

"You see, this is the heart of the world tree, that is, the hardest part. This batch of tree cores comes from a small 15-year-old tree, which is as tough as steel bars. Without tree cores, the world trees could not grow so tall. Please rest assured that we have undergone special sterilization treatment, and you can observe it closely. "

Zhang Yuan took a small piece of tree heart handed over by the staff and broke it hard. Its hardness was very high. Even if he exhausted all his strength, he didn't even bend at all.

"It's really good material."