One of the reasons for the big dropout rates in MOOCs is that there are no teaching assistants. So you can sign up for a course, say in mathematics, or computer science, or web design, or whatever. But you cannot ask anyone a question like ‘So how do I download this material?’ or ‘How do I find this material?’ or ‘How do i find this video?’ You know, just basic simple things. And people get frustrated and they drop the course.”
He thinks AIs could pick up that slack.
http://www.techinsider.io/how-watson-ai-can-transform-education-2016-5