text: Another reason the Facial Action Coding System would be useful in the classroom would be that the technology would be able to tell if the student was experiencing negative emotions. If someone knows their friend well, they are likely going to notice if they seem sad or downtrodden. However, if their friend is trying to hide their emotions, they might not even know something is wrong. On the other hand, if the computer systems were in the classroom, it would be able to tell if their were other negative emotions hidden from the human eye such as depression. This is evident from the article when it says that the Mona Lisa painting is, "83 percent happy, 9 percent disgusted, 6 percent fearful, and 2 percent angry"(D'Alto). These results could be surprising to some because to the normal human eye the Mona Lisa seems completely happy and few would guess she's actually angry or fearful. So, this would help administators know if there was emotionally something they could do to help their students.