If all the teacher is doing is repeating the book, then sure, a lecture is just a terrible way of republishing the book. A real lecturer, however, should be ab

If all the teacher is doing is repeating the book, then sure, a lecture is just a terrible way of republishing the book. A real lecturer, however, should be able to tailor the lesson to the level of the students, fill in holes in the assumed knowledge, and bring their personal experience to the the material.