text: Many students don't care about school and will ingnore the change in the lesson like Dr. Huang is talking about. The article also never states how the class would be monitored. Its also never stated how long the scan will take, the scan of emotion could take up class time if the scan needed to be infront of a computer. Its also a school where you learn, not a safeplace where when you feel sad the teach knows and tries to cheer you up. Teachers don't need to know student emotions and shouldn't care they are there to teach.