>> if the students are going to actually go to the trouble of watching them they may as well actually come to class where they can ask questions, get feedback,

>> if the students are going to actually go to the trouble of watching them they may as well actually come to class where they can ask questions, get feedback, and get involved in class exercises. I strongly disagree. Many lectures aren't structured to include or allow these activities, and many students don't need or want to participate in them. Those students are the ones who sit behind their laptops the whole period, and everyone would be better served if they didn't have to come to lecture in person.