text: Some people might ask how can it detect emotions accureslty if somone fakes an emotion, but facial muscles do not lie. For example the frontalis pars lateralis muscle indicated suprise though a raised brow. A raised brow would indicate to the teacher that a student had mostly likely just learned something new. If several students had this expression the teacher could decide to keep incoorperating it in the lesson. The zygomatic major is the main indicator of a fake or real smile. For a real smile the mouth is lifted at the corners whereas in a fake smile the mouth stretches sideways. This would show if a topic was enjoyed by a students or disliked. It could also tell which topics students prefered more than other.