text: Also where would you even put the emotional expression technology, because having a huge thing in the front of the classroom would be a distraction. That technology is also a distraction, because students would mess around with it when they probably aren't supposed too. Also the students would keep asking the teacher what their emotions are. "Then it could modify the lesson, like an effective human instructor." That quote sounds like its better than a teacher, because it can read the emotions and tell when the students get bored so they can change it.