Why do so many people read so many books, but it's as useless as not reading them?

If you study, you should apply what you have learned. If you just watch the flowers in sitting bull, you will swallow the dates. Just like eating, just fill your stomach without digesting it properly. What will that do? In fact, no matter how much you read, you only need to read a good book. Instead of just seeking quantity, we never care about quality. Because people in reality have no memory of Wei Xiaobao, as long as they can remember all the books they have heard and make use of them according to their plots. If this is the case, why do many industries need teachers and training? Just buy a book to read. It is precisely because some people can't understand the mystery in the book, and they only say yes when they see a little fur. This result can only harm others and themselves. Therefore, it is certain that there is no end to learning, but how many people can apply what they have learned?