text: Another reason why the Facial Action Coding System can help students is because if the students know others are confused as well, then they can help each other out. Dr. Huang says that, "The facial expressions for each emotion are universal." If students start to understand how others are feeling about certain concepts then they might not feel as alone. Some students tend to think that it is only them that do not understand a certain subject or unit, but if computers track and show that even though some people might not look worried and they are, students might feel more united. If they are united then that can help each other out and maybe even build friendships. People may disagree with that and say that not all facial expressions are the same, but, "even though individuals often show varying degrees of expression," they are still universal. While one student might be stressing himself out and have wide eyes, a student next to him might just have his eyebrows furrowed. If the computers identify the differences in actions but similarities in emotions, that can really help students.