text: Knowing emotions may benefit pychologists when wanting to understand the true feelings of one of their patients in a career based setting. However, in a classroom setting, reading student's emotional expressions is not needed. Some students may not enjoy school, but they are still required to go. The article notes that Dr. Huang adds Then it could modify the lesson, like an effective human instructor. This means that not only would The Facial Action Coding System be able to read the emotions of students, but it would also takeover the job of being a teacher. This is a disadvantage for teachers since they are there to answer any questions and do the lesson planning. This would also put many teachers out of a job.