Also, computers can calculate how you change your muscles to indicate which emotion your feeling at that moment like in the article it talks about how your muscles movements move, ''For example, your frontalis pars lateralis muscle (above your eyes) raises your eyebrows when your're surprised; your obricularis oris (around your mouth) tightens up your lips to show anger.'' This shows that with these movements of characters it can show what kind of emotion a student is feeling in a classroom.