3) If the opposing parties want to resolve the conflict by force, then Robert rules of procedure is not necessary. No one obey any rules on the battlefield. And in order to win, both sides have to constantly guess the other's motives. Resolution by force is sometimes highly efficient and sometimes not. For example, after China fought against India in 1962, the war ensured peace for the next 60 years. If we negotiated with India under Robert's rules of procedure, there would have been constant conflicts. So force is the most efficient solution in this case. But sometimes it is costly, such as the two world wars that showed the world the great value of peace. Robert's rules of procedure are needed only when both sides do not want to resolve conflicts by force, and both want to resolve them in a peaceful way. 

4) The main function of Robert's rules of procedure is to uphold the equal powers of both parties. When rival parties argue in court, or in parliament, the status may be equal or unequal. If they are not equal and one side feels humiliated, he is likely to leave. If the two sides cannot resolve the conflict through court or parliament, they can only go to war or solve problems in other confrontational ways. To avoid going to war you need Robert's rules of procedure to preserve the equal rights of both sides. Today, in the confrontation between China and the United States, the United States does not want to give China equal power, so Robert's rules of procedure does not apply to the China-US conflict.

5. Understanding and Evaluation

5.1 Understanding of Things and Events

There can be different understandings of the same thing or event. For example, the sun rises in the east and sets in the west is a fact, and the geocentric and heliocentric theory are both understandings of this fact. But neither the earth nor the sun is the center of the universe. Geocentric theory and heliocentric theory are both fabricated products of ideas that belong to the subjective world. The main content of scientific theories is guess and understanding of facts. The content of science is not equal to facts. The main use of science is not to describe facts, but to understand facts. The so-called understanding of facts mainly refers to the discovery of commonalities and rules.

Astronomy, geography, physics, chemistry and other scientific theories belong to the ideological products of the subjective world, and each theory is constantly developing and changing, and there are different understandings of each fact. These understandings are often contradictory and opposite, and maybe one of them is in line with the objective reality, while the others are not. Therefore, the understandings conforming to the objective reality are a part of various subjective understandings, that is to say, the objective world is a part of the subjective world.

5.2 Understanding of the Language

Language and words are artificial objective facts. There can be different understandings of the same sentence. For example, Lin Daiyu said to Jia Baoyu, "I'll ignore you forever." This sentence may be angry, joke, may be true. Only one of these understandings is in line with Lin Daiyu's real idea, other understandings are subjective. So objective world is a part of subjective world. But other understandings are also valuable and cannot be easily ruled out.