text: In paragragh 3 it tells you all the type of emotions it regonizes .Like for example it say "your frontalis pars lateralis muscle(above your eyes)raised your eyebrows when you're surprised."This tells us that just off of face expressions it can tell how you feel. My point is though is what if you have a face expression on your face but that is really not how you are feeling, is the computer going to know that or not because if they don't once again i don't think it's going to be that valuable to people.