text: Reason two, The Facial Action Coding System comes to benefit within peers themselves. The author states that " Dr. Paul Eckman, creator of FACS has classified six basic emotions- happiness, surprise, anger, disgust, fear, and sadness (par 3)". Getting assignments changed because boredom is a good thing; but, would it be a plus that peers know what one another also think in the classroom too? Muscular action units can easily change the way students look at one another in the classroom.