How terrible is legal illiteracy? How speechless can people be?

Legal blindness is like a madman. She knows nothing before the law, and then she doesn't know how many mistakes she has made and whether her actions are legal or not. Then, after being told, she still thinks she has nothing to do, just like a ticking time bomb, so this situation is terrible. If there is such a person in the family, the whole family will be on tenterhooks, especially such a person, if reckless.