If they do not understand crimes in a society, they cannot be good students of law. Comparatively speaking, our arts faculties are the most backward owing to a lack of contact with reality. Students and teachers do only class work. Philosophy is book philosophy. It can be composed only of vague ideas.
Logic is the same.
But one understands it gradually through application. I did not understand much when I read logic. The understanding came to me when I used it. I have been talking about logic. There is also grammar which one does not quite understand simply by reading it.