text: To read someone's emotions based on their facial expressions is an invasion of their privacy. Let's assume this machine can accurately decipher someone's emotions based on muscle movement. What if you don't want people to know how you're feeling? If I am confused about something, and I am embarrased about it, suddenly the whole word knows. It should be up to the student to decide whether or not they want to seek help, not some magical machine. By forcing students to share private emotions, you run the risk of making them less willing to go to school. Who would want to go to a school where everyone knows how you feel at all times of the day? That would affect learning severely, and would definitely do more harm than good. Hindering learning in an attempt to better understand students is not worth it.