In the eyes of interstellar civilization, K-class civilization is not divided, whether it is primitive race or modern civilization, as long as it does not pass through the Great Filter, it is called K-class civilization.

But since the beginning of the L-class civilization, there is a relatively rough division process.

S-level civilization that has no end to the end of the S-level civilization, the L-level civilization is the real starry sky main body...

If it is from the perspective of science and technology, only by realizing the [large fusion reactor] and completing the sub-speed of light spacecraft of about 5% will there be a means of star-level interstellar navigation to reach the true L1 civilization.

In the face of Yi Feng's doubts, Black began to be proud to play with his knowledge, and whenever this time, his heart was particularly useful.

Since he chose to join the new human civilization, he had to do his duty, and he was not a half-hearted person.

"In the captain, the benefits of crossing the Great Filter naturally need not say more.Each L1-level interstellar civilization has achieved a qualitative change in civilization, and can easily crush the vast majority of K-class civilizations.That's okay, right?"

He nodded his head: “So what about L2?”The discovery of dark matter theory is not difficult, is it?”

In his view, since the realization of fusion, humans have naturally discovered dark matter, thus realizing the subsequent curvature engine.

“Yeah, that’s right, as long as the Hadron Collider is strong enough...” Black nodded, “But not all interstellar civilizations are crazy to make the Hadron Collider bigger and stronger, so they don’t necessarily find dark matter very quickly...”

“Moreover, the groping of curvature bubbles is also very difficult and requires a fairly long process.”

Think about it, human exploration of curvature bubbles is only 20 or 30 years, but it has achieved considerable results.

That is because ... the vast majority of space structures are plagiarism of the green light civilization, and it can be said that a shortcut has been taken!

If there is no data obtained when attacking the green spacecraft, the development time of the curvature engine will be greatly increased.Do you laugh, but isn’t it just a blessing?

All in all, the L2 civilization is typical of the birth of the "dark matter" theory and the subsequent curvature engine.

The "dark matter" theory, a huge milestone.

Even... human beings still can’t figure out whether some “dark matter” is zero-point energy or power field, and is still exploring its ultimate essence.

Perhaps just like the wave-particle dilatation of photons, "dark matter" also has two properties, which is also possible.

The level of civilization is, of course, divided by a scientific milestone, rather than the difficulty of a certain technology.Whether this "theory" is simple or difficult, as long as it is discovered and stands up, the level of civilization will rise.

Of course, if there is a gap in the level, the gap in strength is even worse.

Level 1, 5% of the speed of light, up to 10%.

What about L2?Beyond the speed of light!

What about L3?What technology?”

“Nanotechnology.”

“Nanotechnology?”Suspicious of the thorns.

“Yes, to be precise, ‘nano-level manipulation,’ certainly not the current superficial level, but to achieve true atomic-level manipulation.”

“Including a large number of nanomaterials, nanobots, etc.”

“This technique requires civilization to have a deep understanding of the microcosm and relates to the Casimir effect.I’m sorry, but my core memory doesn’t have any information on this...”

"But I know that through these technologies, we can make certain materials with exaggerated properties, including frictionless materials, and use the Casimir effect to make small use of vacuum energy and dark energy."

Black added: “As far as I know, true controlled nuclear fusion technology is realized at this stage.”

Frictionless material... really possible?

Yu Feng paused, the heart feels a little mysterious, L3 level technology has been so exaggerated... in the previous theory, it is almost impossible to exist?

He asked curiously, “Where’s L4?”

“Genetic dynamics, brain topology, civilization at this stage, can study the initial generation of intelligence, and initially transform life at the genetic level ... a lot of data has been given to you.”

“In fact, the human brain chip is equivalent to the L4 level of technology ... this technology crosses the level of civilization itself.”

“What about L5?”

“I don’t know...” Black shook his head, and his original civilization stopped at l4.

He said somewhat solemnly: "Mr. Yi Feng, I remind you that the division of civilization is very rough."Every scientific and technological line has almost no end, even if my original L4 civilization has not fully explored the dark energy theory of L2 level.It is not much of a matter of great significance to dwell on the level of civilization, and it is impossible for the two parties to contact each other to inform each other of the level of civilization.”

“Usually, you can’t judge the strength of the other ship by the appearance of the other ship... unless you’re really at war with the other person!”

“There are always so many strange things in the universe, like the Green Light civilization, don’t you beat a more powerful destroyer civilization?”

“Be alert, humble, friendly, and distant are the rules of survival among interstellar civilizations!”

Yu Yifeng was silent for a while, which is more useful information: "What do you think of our civilization? l2... or l4?"

Black thought: "In theory, our L2, L3, L4 theory has groped a little fur, all disciplines are developing in parallel, this phenomenon is very rare."So I dare say that we didn't have much of a bottleneck before L4."

"But in terms of industrial strength and combat effectiveness, we are probably in the lower L2 class, which is worse than the L1 that has just entered the interstellar, but not as good as the old L2 civilization."

"Our ships are too few and too few, and if the Deep Space is destroyed, there will be nothing left."“The captain... or hurry up and build a ship!”

In the face of the loud appeal of black, Yu Yifeng's heart is also some moving, industrial issues, he intends to specifically urge.

Deep Space is outside, carrying thousands of small spacecraft, no problem.

The development of large weapons must also be implemented as soon as possible.

In the end, he asked reluctantly, “...does you really have no other technology in your core memory?”

Black hands spread, some regret said: "I'm sorry, there is no, my core memory is not complete..."

“In fact, these seemingly epoch-making scientific papers are our basic popularization courses.”

"Just like the new human civilization, the theory of relativity and calculus have been popularized in higher education, and my previous civilization has also popularized higher knowledge, so I can get it..."

“I just learned a little fur and barely remembered it.As for superconducting materials technology, it’s my higher education graduation thesis... isn’t it very good...” said Black triumphantly.

Yu Yi Feng listened to the dark, the basic knowledge of people popularized, even gave such a big inspiration to human beings, it is really drunk.

He thought for a moment, found himself having finished asking the question, waved a sign that he had nothing else to ask.

Black also nodded toward Yi Feng, politely saying goodbye...

“It seems that this blackness is indeed standing in the human position at present ... it still makes sense to kill it without destroying the treaty at the beginning.”

After watching him leave, Yu Yifeng carefully tasted the cosmic information materials given by black.

Human beings are still not strong, what l4, L5 and so on is too far away.The higher scientific papers that make mankind ecstatic are just some knowledge popularization...

The gap between civilization and civilization is really big.

But think about it, there is some truth to this statement.If a normal college student were to travel through the time of Newton, his knowledge would be enough to frighten the scientists of the time!

Even this college student does not need to understand very well, just a little calculus, chemical or biological fur, can make the scientists at that time very inspired!

Let’s put it this way, as long as the college student will carry “hydrohelium-bronium-bronium boron...” or calculate the simplest calculus.This group of scientific elites will naturally be subjected to a huge atmosphere, continue down this road, and then it will not matter what college students.

Creating knowledge is always more difficult than learning knowledge, and it is even more difficult to open a big road.

Just the dark matter theory that humans have discovered themselves, there is still a lot to explore.

The genetic dynamics and brain topology given by black are vast and boundless, just the same as the framework.Human beings have also explored a fringe, gained a lot, and even invented such an epoch-making thing as brain chips.

Black gave humans a good head, and the content behind them also needed to be filled by humans themselves.

In this way, the gap between interstellar civilizations is huge.

The long road is long... At the thought of being a behemoth that has existed for millions and hundreds of millions of years, Yu Yifeng can't imagine what they have become.

Of course, the road has to be a step by step.

At this moment, of course, human beings are not the strongest civilization in the galaxy, and they are already rare interstellar civilizations, and Yu Yifeng will certainly not be blindly worried.

So many low-level civilizations are still living well, not to mention new human civilization...