Opinion Piece in the New York Times
Online education is a one-size-fits-all endeavor. It tends to be a monologue and not a real dialogue. The Internet teacher, even one who responds to students via e-mail, can never have the immediacy of contact that the teacher on the scene can, with his sensitivity to unspoken moods and enthusiasms. This is particularly true of online courses for which the lectures are already filmed and in the can. It doesn't matter who is sitting out there on the Internet watching; the course is what it is.