Wallace, as the host, was not stupid, he frowned and thought for a while, and asked slowly: "Humans, have they passed this civilization filter?" ”

"Possibly." Dr. Pym, a biochemist, said: "The big filter does not refer to the evolution of a species by a conventional species, such as the evolution from apes to humans.

And at least a 1 in a hundred million or even a 1 in billions chance of passing the level, it can be used as a big filter.

For example, the first filter is likely to have been set at the beginning of life, that is, the emergence of prokaryotic cells, or the evolution from prokaryotic cells to eukaryotic cells. ”

"That's right." Reed Richards further explains: "It took a billion years for the Earth to give birth to prokaryotic cells, and it took 2 billion years for prokaryotic cells to evolve into eukaryotic cells.

If this is the first wall, it means that we have successfully passed it. ”

Nair DeGras Tyson, who made the documentary "Travel to the End of the Universe", interjected: "This is also the reason why humans want to explore other planets in the solar system." ”

"Oh?" Wallace laughed: "If we can find prokaryotes, eukaryotes and even intelligent beings on Mars, doesn't that prove that the Great Filter is real, and we humans are not alone?" ”

The scientists looked at each other, and finally Raj smiled wryly and said in English with an Indian accent: "No, no, no, whatever we find on Mars is extremely bad news." ”

"What do you mean?" Wallace was even more confused.

"That's right." Raj explained: "If we find prokaryotes on Mars, it means that the universe is likely to be full of prokaryotes, which means that the appearance of prokaryotes is not the first big filter.

If we find eukaryotes and even complex life on Mars, it means that the emergence of complex life is not the first big filter.

This means that human beings are not special, not survivor bias, the first big filter is still in front of us, and the human civilization on the earth is developing and developing, and it may hit the filter at any time and encounter rapid extinction. ”

Raj's Indian-accented English is a bit comical, but the content is ice-claurel.

Wallace only felt a little difficult to breathe, he took off his tie, poured himself a glass of water, and swallowed it with a grunt, before saying, "Sounds scary." ”

"It's scary, indeed." Leon laughed: "In the matter of the Fermi paradox, no news is the best news, and for humans, whatever is found is bad. ”

"But now....." Wallace tapped his finger at Schwarzschild in the picture, "is that good news?" ”

"In a way, yes." Li Ang laughed loudly: "With the Zetari people as a sample, at least it proves that humans will not encounter the big filter before stepping into the wormhole." ”

"Phew, this is the equivalent of the Zetarians walking ahead of us to explore the way?" Wallace breathed a sigh of relief and said with a smile, "What is this?" Do you cross the river by feeling the stones? ”

Everyone smiled, and Nair said casually, "Not necessarily, the Zetarians may not be able to resist the Great Filter.

If the effects of the Great Filter did not exist in the past, then it is very likely that the Milky Way coincided with a golden age conducive to the development of intelligent life.

There is a giant black hole in the center of the Milky Way, and around that black hole, all kinds of terrifying disasters erupt, such as gamma-ray bursts that periodically radiate outward.

This catastrophe purge all life across the galaxy at regular intervals, acting as a filter.

In short, we are likely to be in the quiet stage before the arrival of the Great Filter, and in the universe at this stage, in a leading position - there are not many advanced civilizations ahead of us, let alone tertiary civilizations. ”

This mysterious and mysterious theory made the host Wallace frown painfully, and the old man struggled to digest this information, and after a long time, he said slowly: "In the sky of New New York, the Zetarians who created Schwarzschild throat are just like us, a higher civilization in this quiet stage?" ”

"Again, this is the answer, possibly."

Leon said with a smile: "But from another point of view, the appearance of the Zetarians, who are also high-level civilizations, is also very likely to prove one point - the big filter does not exist.

If the Great Filter didn't exist, why hadn't we been in contact with the Zetarians before, or even observed any traces of a higher civilization? ”

"Oh?" Wallace frowned and said, "Could it be that we just happened to meet a high civilization at this point in time?" ”

"There is a possibility, but here comes the bigger problem, the appearance of the Zetarians proves that earthlings are not alone, and that there must be more advanced civilizations in the galaxy.

Tens of thousands of advanced civilizations have transformed their surroundings in the galaxy, and they can be discovered by humans no matter what. ”

Li Ang spread his hands and said: "There are several reasons why we have not observed it.

First, advanced civilizations have long visited the four-billion-year-old earth, but we have no records of it.

Second, there are advanced civilizations in the center of the galaxy, and human beings are like savages in the backwoods, ravines, and ravines, and they don't even know that - after all, we can't observe faster than the speed of light.

Third, for advanced civilizations, there is no need for extraterrestrial colonization, they can completely drag planets, or build Dyson spheres to build habitable areas next to Dyson spheres. Even all the members uploaded their consciousness to the online world and enjoyed themselves there.

Fourth, the Dark Forest Theory. All the higher civilizations in the galaxy are extremely aggressive, and any behavior that reveals its location will be fatally hit by other civilizations, so no civilization has revealed its position.

Fifth, there is a supreme super-civilization. The civilization monitors everything in the galaxy and destroys any intelligent species when it reaches a certain level. In other words, there is only one super civilization in the galaxy.

According to the mathematical model, this possibility is extremely great - human beings can leap from modern times to modern times in 200 years, so if we give human beings 20,000 years, or even 200,000 years, 2 million years, maybe we can really grow into a super civilization.

However, the appearance of the Zetarians negates this, and if there really is such a super civilization, the Zetarians are afraid that they will die long ago. ”

"Oh?" Wallace frowned and said, "Can't the Zetarians be super civilized?" ”

"It's still far from it." Leon spread his hands and said, "Their Schwarzschild throat is magical, but it is not magical enough to monitor the entire galaxy.

The sixth possibility is that the cognitive structure of human beings is very different from that of extraterrestrial species. If the human brain works much faster or slower than other civilizations, then we simply cannot understand their message. ”

"How fast does your brain work?" Wallace frowned and said, "What does this mean?" ”

"Hehe, if the brains of alien species work 10,000 times faster than humans, that means they only need electromagnetic waves of very short frequencies to communicate - humans can't extract enough valid information from them."

Reed Richards said indifferently: "And if the brains of alien species are much slower than those of Earth, then it may take years or even decades for them to say 'hello' - humans are also unable to extract effective information from it, and we will only treat those unfluctuating electromagnetic wave communications as meaningless white noise." ”

"I see." Wallace nodded, exhaling a cloudy breath: "Then we can only hope that the Zetarians are not too biologically different from us." ”

"Hehe, in the world, everything is possible. Even if the Zetarians were a group of lightweight, soft-skinned maids dressed as cat-eared girls, I wouldn't be surprised. ”

Li Ang said indifferently: "The seventh possibility is that the higher civilizations know and detect our existence, they are like a group of generous elders, overlooking our free growth, and have extremely strict restrictions prohibiting contact with the lower civilizations or direct interference.

Or, there are advanced civilizations all around us, and we simply can't observe them effectively.

Just as ants cannot understand humans, we cannot understand the ways of existence of higher civilizations, the means of communication - they may even exist as abstract beings as the laws of the universe, standing silently, without sorrow or joy. ”

Wallace was a little confused by this abstract expression, and he glanced around the scientists present, and said slowly, "Well, dear doctors, you are some of the brightest people on earth, and please tell me, how can we be sure that the Zetarians are coming with a peaceful attitude?" ”

Hank Pym was silent, Reed Richards was thoughtful, Tony Stark had a smile on his lips, but his fingers were gripping the suitcase tightly and refusing to let go.

In the end, it was Leon who broke the silence, "Of the several possibilities I mentioned before, the first to the fifth are the most likely, but no matter which one they are, the Zetarians will not have a third type of civilization. ”

Wallace spread his hands and smiled bitterly, "But you also said that it only takes a few hundred or even thousands of years of technology to form an all-round crush." ”

Li Ang just smiled blandly and lay down heavily on the sofa, "Whether they have the power to crush the earth or not, they will sit down and negotiate well." ”

"Who can guarantee peace?"

"Peace is not guaranteed by guarantees, Mr. Wallace." Leon said mildly, "Peace is given by the strong to the weak." ”

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