"Three-body" discussion on "dark forest"

A brief discussion on "Dark forest"

--reading "Three Body" series Thoughts

The three stars are attracted to each other's mode of operation, from a long time ago has been an astrophysicist or even a mathematician's hot exploration field, is listed as the basic mechanical model of celestial mechanics, they constantly try to build mathematical models, computer instead of the human brain to complete countless simulations, trying to find that a little bit of law, can not have the results of the end , and was finally recognized as "Finding the general solution is doomed to be useless", that is, there is no absolute law. The motion equation of the general three-body problem is a 18-order equation, and 18 integrals must be obtained to obtain a complete solution. However, it is now possible to get only 16 points for three-body problems, which is far from solving the three-body problem ...

Isn't it a little dizzy? Let's put aside these advanced science, relax, come to a science fiction with the same name, and related to it-"three bodies", and simply study one of the very interesting settings-"dark forest" it!

The novel was made by Liu Cixin, the story of a woman named Ye Wenjie, in the Cultural Revolution in despair to broadcast to the universe, resulting in human civilization and three of civilizations dispute began, and a woman named Cheng the world's love such a romantic ending, just mirror each other, To us a picture of the great conflict between civilizations, the plot is closely linked, and often unexpected stories, so that people indulge in them, unable to extricate themselves.

If you want to know more about it, you may wish to read it yourself in a quiet afternoon. Now, let's cut straight into the subject.

"Dark Forest" is a proper noun in the three body, which refers to the social structure of the universe, derived from the "Sociology of the Universe". First of all, we must introduce two basic axioms: "One, survival is the first need of civilization" "second, the continuous expansion of civilization, but the total amount of material in the universe remains unchanged." Then there are two important concepts to be introduced: the suspicion chain and the technology explosion.

First, we define the "good" and "evil" between civilizations--good is not to attack and destroy other civilizations, but Vice (which is the lowest goodness). Suppose we are now a civilization and discover another civilization, yet we cannot judge whether the other is good or evil, or whether the other person thinks we are good or evil ... As a result, a chain of suspicion is formed. Originally, suspicion chain in our "Human circle", only need to communicate can dissolve, but in the universe, because of distance and cultural differences, the formation of suspicion chain of civilization is indestructible, this nature of the formation of the two civilizations themselves and the good and evil is irrelevant. Some people say, how do you know it will lead to hostility rather than communication? The reason is simple, the attack is one-way, as long as the launch is good, and the communication needs at least one direction, you say which is more cost-saving (that is, time, because it can create other strong opponents)? When civilization develops to a degree, it is easier to attack than to communicate, that is, "I kill you, what do you have to do with it?" "

Secondly, the speed and acceleration of civilized progress are not necessarily consistent, although the universe is almost average, but the time line and different, so even if the civilization is weak, but still may in a short time beyond the powerful civilization, this is the technology explosion.

To sum up, if a coordinate is broadcast, even if there are 90% of the civilization ignored, the remaining civilizations in another 90% of the detection of that position, confirmed that there is no civilization after ignoring; then the rest of the civilization, there must be a direct "shot" to try, anyway, there is no loss. Thus, a coordinate (whether or not it is really civilized) will inevitably be hit by the random nature of the exposure.

In this way, the universe forms an almost morbid social structure-the "dark forest". It is callous and even generates a conjecture: "The Universe may initially be 10-dimensional, and in order to combat the enemy, the high-level civilization continues to use the reduced-dimensional weapons (for example, the second-to-last foil to destroy the solar system), which now becomes three-dimensional. "

Fortunately, finally a civilization woke up (well, is n years later), The Divine Civilization to zero (God to have the ability to "restart" the universe), the use of ultra-film broadcasting, called on the large universe outside the small universe to return to maintain material conservation, prevent the universe can not collapse, continue to extend, but also popular "return movement", It is also the emergence of a civilization that rises above the level of survival and gradually jumps out of the "dark Forest".

I have to say that the three-body concept is really rigorous, and even guessed the logic of almost no loopholes in a doctrine, but also caused me to ponder, Liu Cixin will it to make, certainly also hope to inspire people's reflection it!

Zory

"Three-body" discussion on "dark forest"