Is it really reasonable to use the Book of Changes to predict or tell fortune?

There is a saying that "those who are good and easy do not anticipate." I can only say that, to a certain extent, the divination in the Book of Changes is effective. However, you can't trust him absolutely. If you encounter a choice and a difficult problem, you can ask, but if you ask about your future life, such a problem will be avoided. Moreover, teenagers and the elderly are generally not optimistic, the former is too plastic, and the latter's life is over. In a word, I think it is reasonable, but not complete.