text: Here is how it works. According to the article "The process begins when the computer constructs a 3-D computer model of the face; all 44 major muscles in the model must move like a human muscles" This show that, we can believe in the result of the software after its read the emotions. Because the computer created a model of the face, with all muscles that humans has. When you move your face the 3-D model of the face will form exactly the same as your face to help the software recognize what is that emotion. One of psychologist and creator of FACS that work with Dr. Huang is Dr. Paul Eckman has classified there are six basic emotions :"happiness, surprise, anger, disgust, fear, and sadness." That is what emtions of a regular humans looks like. Either you happy because you got good grades, or anger because someone ate you ice cream that you save for a long time. They bring every emotions of humans in real life in the software to help help it easily recognize humans face. One of the example from the article is when your frontalis pars lateralis muscle (above your eyes) raises your eyebrows when you are surprised, or your orbicularis oris (around your moth) tightens your lips to show anger. The computer is really smart, just look to your face and form the 3-D it can easily show how mad you are, how sad you are. Even from the painting Mona Lisa of Leonardo da Vinci, the computer show she's 83 percent happy, 9 percent disgusted, 6 percent fear ful and 2 percent angry. You can see how smart it is. If you mad and angry or surprise at the same time, the computer will still know and point of the percent of each emotions. When you make a fake smile, the software still recognize it. According to the article "But in a false smile, the mouth is stretched sideways using zygomatic major and a different muscle, the risorius." You cannot lie to them, they already know exactly how you give them fake or real smile. Go back with Dr. Huang classroom. Why is FACS is a valuable software for study at school? Because when you are tired, bored or mad about something you cannot focus on the lesson or what the teacher or proffessor teach you. From that the computer will recognize your emotions and tell the teacher your feeling. Teacher cannot make you forget about your problems but they will create or find another way to make the class seem more fun or do more activities instead of just standing and read ore teach boring stuff that you don't care about. That's help you feel more comfortable, in that way when you feel happy and relax you can focus on your work more. All of the stuff that you learn will easily come to your brain and you will remember it.