text: Second, students faces don't lie. You would be able to tell a confused face from a mile away. If computers detected when students were confused this is an easier way of finding out what the student needs help with. If a computer program is explaining a subject step by step, and all of a sudden the computer detects the student becoming confused this helps a teacher know were a student became lost. Many students won't admit to them not knowing, they'll try and find a way to understand,but at the same time many won't.