text: I believe that the value of using technology to read students' emotional expression is important and it should be used. Since this technology records facial expressions, the same technology can make computer-animated faces more expressive- for video games or video surgery. Another reason is "Most human communication is nonverbal, including emotional communication." Another purpose we can use this for is as a lie detector, because in the begining of the article it said that Mona Lisa is 83 percent happy, 9 percent disgusted, 6 percent fearful, and 2 percent angry. So if somebody is lying i'm pretty sure they would be scared to be caught.