text: Read this part of the article, "Then it could modify the lesson, like an effective human instructor". If a classroom did a scan and all the students were tired, not interested, and ready to go home, the teacher could take those results and make the class more interesring for the students. The students would probably have more fun and want to do the work if the teacher made it fun and interesting for the students. But don't make it too difficult for the students cause they could shut down again.