First, insight into the essence:

Look at the system through the phenomenon (essence);

System = Element X Connection Relationship

Five modules that make up the system:

1, variable, that is, element;

2. Four connection relationships: causal chain, strengthening ring, regulating ring and lag effect.

Second, logical thinking and logical closed loop:

The mode of logical thinking: through the appearance of things, find the fundamental solution, trace the source, and finally draw inferences.

Logical closed loop: to do this, thinking is logical, thinking has a closed loop, and forms a closed loop at a high level, and always keep breaking your open mind.

Third, mathematical thinking:

Seek certainty from uncertainty: do the right thing repeatedly and go deep into a field (if one thing is done well, the probability of success by repeating 14 times can reach 95%).

Looking at a problem from a dynamic perspective, that is, the principle of calculus, has a process from hard work to ability, to achievement, to appreciation, and has an integral effect.

Four: The difference between ordinary and excellent lies in the different ways to solve problems.

Ordinary people look at the appearance of things, and excellent people look at the essence of things. Empiricism sometimes blinds your eyes and even deceives you. Therefore, when encountering problems and difficulties, we should use the method of hypothesis-verification-conclusion-adjustment to guide ourselves: boldly assume, carefully verify, draw a conclusion and then constantly adjust.

Describe the experience: this part of the content makes my understanding of things more clear and thorough, but also makes me a lot more peaceful. As the saying goes, "You can't eat hot tofu in a hurry" should be the principle of calculus.

Exercise: Expect the result of 14 repetitions.