Why can people be called fools if they don't know their ideas in advance?

Because others can't understand it, they can't see any effect. If you keep trying to get a drill, others will think you are a fool. But why do you care what other people think? If you want to win the support of others, first prove that your idea is useful. Otherwise, it is impossible for you to pay and practice silently for your own ideas. There is a lot of pain and words on the paper. Only when it works in practice can it work. So what do you think? If others can't understand it now, practice it yourself. Although the process is very long, you may eventually get nothing, but now that you have found out, if you are not willing to pay for your truth, even if you get nothing. How can you expect others to understand,