My problem with the online course idea (aside from the fact that this is pretty much already available) is that it lacks interactivity. The only reason I went t

My problem with the online course idea (aside from the fact that this is pretty much already available) is that it lacks interactivity. The only reason I went to half of my lectures as an undergrad was because I could ask questions and get an near instant, expert response. And sure, it's possible to pause a video lecture and look something up, but in my experience, it's just not the same. If I'm trying to understand something for the first time, and a part of the lecture just doesn't quite make sense, I want the transaction cost of clarifying a point to be as low as possible.