text: A the third reason on why its not vauleable is because how can you prove it is accurate. How would you ever know if that is really how you feel when it shows you because your the only one that knows how you really feel. Yeah it may take the 44 major muscles in your face and recognize an expression. But is it really accurate? There really is not a percentage of feelings you can have. It is just how you feel. A machine should not be telling you that you feel 83 percent happy, 9 percent disgusted, 6 pecent fearful, and 2 percent angry. You should just be able to determine yourself and express or know how you feel cause they are your own emotions. You do not need the facial coding system to tell you.