text: Most student probably wouldn't be able to do that.In this essay, I'm going to talk about the new softare, that is called the Facial Action Coding system, which can help the computer to knows if we are sad, happy or angry. Putting the example of the subject of Leonardo da Vinci's called Mona lisa. I'll explain why this software is a very good idea, for the teachers and the students too. The software can calculate "emotions" like math homework. Just recognizing the subtle facial movemets that persons use to express how they feel.