Center concept, anti-center concept and variable angle concept.
Please look at the following example:
"Wooden bucket theory" is a concept in modern management, which means that the water capacity of a wooden bucket depends not on the longest wooden board, but on the shortest wooden board. In order to fill the barrel with more water, we must find ways to change the current situation of this short board, seize the short board and eliminate the weaknesses.
1, writing materials generally contain the tendency that the proposer likes or dislikes, and the central idea is to refine the center along the proposer's direction. It has been shown in the above materials that its key meaning is "eliminating weaknesses". From this, the general meaning of the given material is extracted, that is, the key to ensure the overall quality is to foster strengths and avoid weaknesses.
2. The anti-center thought is the so-called "bounce pipa", which takes the proposer's tendency as the opposite and uses the form of reverse thinking as the opposite. For example, in the above materials, we can establish the center as "eliminating longboards". Of course, the water capacity of a barrel is determined by the short board, so the long board has nothing to do with the water capacity. Every part of qualified products has strict quantitative standards. As long as this standard is reached, the quality of the whole product can be guaranteed. If the standard of a certain part is improved, the cost will increase, and the improved part will not improve the overall quality of the product. What's the practical significance? It is a great waste to keep the long board.
Note: it is not necessarily a categorical denial, but a skepticism from the other side.
Diligence makes genius.
3. The idea of changing the angle is to avoid the central point of the material and choose another angle to extract the universal meaning. The idea of changing angles is in the form of divergent thinking. Let's take the above materials as an example, and don't talk about the problem of long board and short board, but focus on the water holding capacity of wooden barrels. Without changing the length of the board, expanding the bottom area of the barrel is also a way to increase the volume.
It should be pointed out that the above three conception methods are not narrative based on facts, but "reason" based on facts, that is, abstracting universal meanings.