Lecturing was invented in Middle Ages, before the printing press, when there might have been only a single copy of each book per university. So instead of askin

Lecturing was invented in Middle Ages, before the printing press, when there might have been only a single copy of each book per university. So instead of asking students to read the book (which would be impossible) a lecturer would read it and then tell the students what the book said. Nowadays, when everybody can just read the book themselves lectures are pointless. When I was in college I basically never attended any lectures for that reason.