For another example, after the patient's diarrhea occurs, the doctor has a variety of speculation about the cause. After the decline of enterprise benefits, managers have a variety of speculation about the reasons for the decline. We can only guess, estimate, reason, analyze and judge about many things that cannot be directly observed. These guesses all belong to the subjective world, and only some of them conform to the objective facts. So for these guesses, the objective world is a part of the subjective world.

All scientific and philosophical theories are guesses and understandings about objective things and objective laws. There can be many kinds of guesses and understandings about any one thing or law, often only one of which is in line with the objective reality. So for all scientific and philosophical theories, the objective world is a part of the subjective world.

4.2. The Conditions of Robert's Rules of Procedure

Robert's rules of procedure require that the motives of others not be questioned，one's thought is not guilty. This rule has serious problem. For example, between April and May 2022, some people bought the green wheat with expensive price and harvested the wheat before it was ripe. Some people commented that some rich people or organizations deliberately destroy China's image by wasting food when the shortage is coming. This suspicion is to question other's motive, and against Robert's rules of procedure, but it is justified and necessary. 

Maybe you should not question other's motive in the court, but their motive must be questioned outside the court, and in daily life. On the battlefield, you must predict the enemy's intention and guard against sneak attacks. In the mall, you must figure out whether other's goodwill is sincere and prevent cheating. We interact with other people every day, so we have to speculate other people's psychology and motive every day.

Robert's rules of procedure is a widely accepted rule in west. It has long been applied in important occasions such as courts and parliaments, and has become one of the main manifestations of equality and free culture in the west. But neither the authors, the adapters, nor the users of Robert's Rules of Procedure have ever clarified the conditions and value of their use. Then what are the conditions and value of Robert's rules of procedure?

1) Robert's rules of procedure are used to handle relationships between people. If only a private conjecture, speech and behavior do not require Robert's rules of procedure, as long as you do not influent the interests of others. It doesn't matter how I guess other people's motives, if I don't say them out or I don't let my words be heard.

2) Robert's rules of procedure are used to handle hostile relations between people. If the parties are friendly, Robert's rules of procedure are not required. Relatives and friends often need to guess each other's motives. For example, when I bought some apples for my friend's child, he said, "Thank you so much. You always take care of my child as your own." In fact, I didn't treat his child as my own, but I am glad to hear his guesses.