Just as the spittle of these experts was flying, Li Zhendong, an expert in informatics, stood up and expressed a different opinion.

"Don't get too excited, professor. Why am I a little skeptical, enlightener civilization, let's just call it for now...... Is it really a civilization full of good intentions? ”

He spread his hands and questioned: "The Riley civilization is a very ancient religious civilization, and a brilliant culture was born millions of years ago, including writing and language, and it has been stagnant for a long, long time, and it has been in a stable state. If it goes on like this, it is likely that there will be no progress. But what is the purpose of planting the 'World Tree' of the Enlightener civilization, and can it promote the development of the Riley civilization? ”

"You know, this species can cause a mass extinction!"

"I even feel that we have over-read this incident. The Enlightener just wants to take all the carbon on this planet, use the World Tree, and turn it into this organic matter similar to coal, and then harvest it all at once. ”

"We already have the relevant cosmic common sense, organic matter is more valuable than ordinary metals in the trading market! For more advanced civilizations, as long as the core resources can be mined, metal elements are completely inexhaustible, including various rare earth elements, which abound in the depths of the earth's core. But organic matter is different, there is only a thin layer on the surface of the planet, and there is no more to want! ”

"Using this kind of biotechnology, it is more cost-effective and more effective to collect organic matter!"

He said with great emotion: "It's really a big deal, a big deal to harvest a planet at once!" Maybe it's not just this one, but ...... Countless planets! Including the Earth in the past, it's just that the plan on Earth may not have succeeded. ”

There was silence in the room for a moment. Zhang Yuan even felt that his hairs stood on end, from good to evil, as if it was just a moment's effort.

Soon, Li Zhendong's conjecture caused a big wave!

People invariably think that if this civilization is really "evil", then ......

Did they do anything to humanity and the planet?

There was a terrible silence in the conference room for a while.

The biologist hesitated for a moment, then argued, "I still think that the Enlightener civilization is full of goodwill towards the Riley civilization. Professor Li, if you want to implement this kind of plan that lasts for millions or even tens of millions of years, you should choose a planet rich in carbon and conduct experiments, right? ”

Li Zhendong nodded, "Indeed...... The starting point is very important. ”

The biologist continued: "However, Riley is not very high in carbon, just slightly more than Earth. According to you, you should choose a planet similar to Venus, with a surface full of carbon dioxide, in order to maximize the benefits. Why did the Enlighteners choose Riley? It's not worth it at all! ”

Li Zhendong blushed his neck and said loudly: "They may also have laid out countless planets, and there is no need to consider the question of whether it is cost-effective." It's like if we use a large seeder to sow seeds in the field, it doesn't matter whether the seed can germinate or not, as long as it can grow plants. It doesn't matter if the harvest is smaller, do you think about what the harvest of a particular wheat plant is? ”

But why hasn't the earth been harvested? And Venus, Mars! ”

"Because this kind of plan can't be 100% successful, is it? Or maybe it's a climate disaster that has wiped out alien species! Oh, by the way, don't you think it's strange how life evolved in Australia? Maybe the aliens did it? Li Zhendong's brain was opened.

"Professor Li, the species in Australia, there are fossils millions of years ago, and the time node is not right."

Just when the two were arguing about this, Zhang Yuan suddenly said: "Listen to me first, first of all, if the civilization that transforms the World Tree is really the 'enlightener civilization' that the Gliese civilization has encountered, judging from what they have done, there will be no great malice." ”

"Because the Gliese civilization is clearly documented, the enlighteners made them aware of the existence of science and the existence of electricity."

"Secondly, if you want to use biotechnology, fix carbon, and use microorganisms with the strongest reproductive ability, such as algae, it is much more efficient than the World Tree, right?"

"If this civilization is indeed strong enough, it should not be a problem to develop such microorganisms, not a tall plant like the World Tree, although the final effect is the same, but the efficiency is undoubtedly more than a little lower."

Li Zhendong was thoughtful and did not speak, which is difficult to explain. If it is forcibly determined that a higher civilization cannot develop such a microorganism, it will only make people laugh off their big teeth, and even he himself does not believe it.

Everyone gradually calmed down and breathed a sigh of relief.

An interstellar civilization that wants to mine materials has no need to modify the genes of local species according to local conditions.

"If it has great malice, it can directly develop one or more super microorganisms, destroy all animals and plants, and then reproduce without limit. There is no need for the Riley people to keep them alive, and there are no variables in plain life. ”

In this way, the efficiency is tens of thousands of times higher than that of a simple world tree. The species extinction plan, which takes tens of millions of years for the World Tree to complete, may be completed in hundreds of years using super microorganisms......

Zhang Yuan said again: "Actually, everyone, if you think about it carefully, I still think that the Enlightener has a certain amount of goodwill. The World Tree in this world is not necessarily bad for the Riley civilization. ”

"First, the World Tree provided a lot of food and living space, and at least in ancient times, with a shelter from the elements, there was a lot less chance of starving and freezing to death. Without the World Tree, their population would be much smaller, and the development of civilization would be more difficult. ”

"Second, the World Tree provides very good building materials. The performance of this tree core is comparable to that of 20th-century steel bars, and it is not easy to rot and not easily oxidized by air. This kind of biological material can still be used in the 20th century, or 21st century! ”

"It should not be difficult to understand how much convenience this will bring to development, whether it is infrastructure or building houses, even steel bars can be saved."

Many people nodded, what a huge superiority it was to have a high-performance material that could replace steel at a time when civilization was underdeveloped.

Iron and steel, the cornerstone of a civilized industrialization, almost all industrialized countries' industrial processes, are started from the large-scale smelting of steel, without steel there would be no other industrial products, there would be no high-rise buildings, there would be no guns, vehicles and ships.

If "steel" could grow in the ground at the beginning of the development of civilization, its convenience would certainly be self-evident.

"Oh, by the way, there is a third point, because of the appearance of the World Tree, more carbon elements have been fixed, and more fossil resources have appeared in the whole world! If the Riley civilization really developed modern technology, it would definitely be thanks to these fossil resources. Who wouldn't want to have more fossil fuels at the beginning of civilization! ”

"It's a great gift from heaven. Can the civilization of the earth, without fossil fuels, develop a modern civilization? No! Not even the first industrial revolution could be produced! ”