Descartes is a famous French philosopher, physicist and mathematician, but like Socrates, he also claims that "the more you learn, the more you find your ignorance." Lao Tzu also said similar words: "less is more, more is confused; if you go far, you know less." however, what is more vividly expressed is the famous saying of Da Vinci: "Little knowledge makes people proud, and rich knowledge makes people humble. Therefore, the hollow stalks proudly raise their heads to the sky, while the full ears bow their heads to the earth and to their mother."

I have never had the opportunity to experience these proverbs, so I have little knowledge and experience of them. However, in recent years, after we preliminarily unveiled the mechanical action mode between the locking segments, I think the above proverbs are true. We found that when the k-th locking segment is loaded to the peak strength point, after a small strain increment, the K + 1 bearing capacity is higher The locking segment of just evolves to the volume expansion point; this model is universal. Although we can explain the rationality of this model from mechanics, the establishment of this model inevitably requires that there is a K + 1 locking segment matching the bearing capacity of the k-th locking segment in the seismogenic tectonic block, that is, the bearing capacity of the latter is required to be higher than that of the former, but not too high. How to solve this in geology Is it that God has already arranged the interpretation? Up to now, we still have no idea.

With the deepening of our research on the fracture mechanical behavior of the locking section, although we have revealed many mysteries of the earthquake generation mechanism and evolution law - indicating that the prospect is promising, we have encountered more problems similar to the above problems. In other words, the closer we get to the understanding of the underlying causes, the more problems we encounter, the more difficult it is to solve, and the more powerful we feel. Looking back In the past, it is hard to avoid feeling: at the beginning of entering the door of earthquake prediction research, we felt that we were all in control and arrogant because of some unexpected scientific discoveries, which was really dazzled by the preliminary victory. This so-called "the world is invincible in the first three years, boasting, and it is difficult to do anything in the next three years."

In short, the way of scientific research is the way to get to the bottom of the matter. However, if you pursue the cause of something - keep asking why, everyone will always get stuck. Once you get stuck, you can immediately say "God doesn't roll the dice" Prevarication? Obviously, the answer is No. without understanding, there will be no qualitative change in understanding, and scientific theory will not make substantial progress. As for whether you have traced back to the lowest level of understanding in your lifetime, you need to think deeply and refer to the current level of science and technology before you can make a rational judgment. I think the lowest level of understanding (such as axiom) It should exist, but the boundary of the theory based on cognition is unbounded, that is, there will always be better new theories to replace the old theories in the future.

The world is vast, and there is no end to learning; scientific exploration is endless. Therefore, all thinking and behaviors that are conservative, conservative and do not want to make progress should be abandoned.

Never being satisfied is the wheel of progress, which can carry people who are not complacent forward; only by constantly surpassing themselves, challenging their limits and forging ahead, can we reveal the ultimate mystery of the evolution of things, so as to achieve a great cause. I would like to encourage you with this!