text: Not only could we learn better and help the teachers understnad us better we could understand the people around us better. We could learn how to recognize those faces and understand how the person we are talking to is really feeling. Not only that we could make a whole new lie detector test for authorities. If they had those they could truely find out if someone is guilty because as the passage said faces dont lie. Maybe if we had that type of technology helping the law the crime rate would go down emencely because if criminals knew that no matter what they did they would always fail this test if they lied they wouldnt commit those crimes and risk getting caught.