I agree with Joshua Kim, teachers who are effective lecturers should continue to use them. Every morning on my drive to work I listen to a lecture from one of the Great Courses. I have listened to lectures on almost every topic there is, and they are all interesting because this company picks the best college lectures for their courses they can find, based on several metrics. I don’t think our wonderful technologies ever will, or should, replace the classroom lecture. Teachers should focus on how they can use technologies such as video to make their lectures more interesting and relevant to their students.