I used to say that investing is about confirming one's own boundaries, which may be another way of saying it in the circle of abilities. Knowing who I am, what I am doing, and where I am in the comprehensive coordinate system of technology, society, and ideas, these are all grand matrices. I may answer these questions day and night when I read a book, but I am too weak to answer them well so far. What I used to think I could understand, now upon careful consideration, I actually only understand less than three parts. for instance. When I was studying elliptic curve encryption algorithms before, my teacher mentioned 'assuming two lines intersect at infinity'. I didn't actually understand, so I accepted it in a vague way and proudly told people that I had learned these things to scare them. I have always had a vague understanding since I was young, this is who I am. This is my self-awareness. I certainly know that these mathematical details do not need to be explored, as they have already been proven to be useful. What about other fields? I'm actually the same way. Perhaps I have truly been taken care of by God, living in confusion and safety until now, but I know that if I really have to take an exam, I will fail. Investment is such an exam for me. Charlie Munger said that investing is like shooting fish in a bucket, and you have to pour out the water and shoot again, that's how simple it is; Buffett said that he doesn't do high jump, but instead finds a very low fence and lightly crosses over. This has given me great inspiration. Why should I try to understand such a complex matter? I really don't understand mathematics; I am also very unfamiliar with politics; After carefully reading an interpretation, I couldn't summarize a single sentence myself. I always seem to enjoy solving difficult problems and looking for some difficult information to read. Pain, twisting, feeling terrible. This is my self-awareness. Fortunately, there are test papers in the world specifically designed for people like me, they are both simple and difficult. Simply put, as long as I know who I am, I can do well in the exam; It's so difficult that if I'm not honest, I won't pass. God really has exam questions. I sometimes speak harshly and sarcastically, mocking others in various ways. In fact, I vaguely see others being very dishonest when doing problems. They, like me, do not understand the infinite distance of intersection and then write. Scores are invisible, only one knows if they have done well. Within my boundaries, there is only room for very simple things. Once I figured it out, I deleted those books that didn't seem to call and hadn't been read yet. I couldn't read them; Just now someone was interpreting Ethereum, ah ah, like a heavenly book. When it comes to talk shows, they burst out laughing. I am aware of these, which are also self confirmations. I have a little bit of a sense of who I am.