text: All in all, the amount of time and effort that it would take to take a simple scan is a trivial expense to the reults you can get from it. The main reason is revealed in paragraph 6, the author explains, "A classroom computer could recognize when a student is becoming confused or bored", this qouted by Dr. Huang of the Beckman Institutefor Advanced Science. He explains that this device could help teachers better their educational skills in the classroom. When the technology fully analyzes the emotions of a student it is a way of giving feedback to teachers regarding the way a lesson beign taught is received.