text: secendly, theres ba computer that contructs a three-D model of the face and all 44 major muscles in the model must move around like the human muscles. there are six basic emotions happiness, surprise, anger, disgust, fear and sadness the three-D computer can detect all six of these emotions and calculate the emotions and tell you how you really feel. you can tell when someone is truly smiling because there muscles in there face move a serten way and if it is a fake smile your muscles move a different way therefore you can tell if the smile is fake or not.