Qimen can predict your original life trajectory, and you can know when you will encounter opportunities to ride the wind and waves, or when you will encounter sudden disasters, and then how these events will affect your life. This is fate. However, when you know these special life nodes through special doors or any digital technology, your life trajectory has deviated. For example, after you know that there is a disaster, you will definitely want to avoid it in different ways. Even if you don't take the initiative to do so, your mentality has changed, which is different from when you knew nothing before. This is the variable. It is these differences that, in turn, affect the prediction results, making the prediction results not necessarily absolutely accurate, so naturally it is impossible to achieve the purpose of predicting everything. Therefore, Qimen can predict everything about himself, but it can't. However, Qimen can help you judge whether a thing should be done or not, thus playing the role of seeking good fortune and avoiding evil.