Rate the following essay on its writing, argument, and language skills:
Have you ever gotten bored during a lecture or lesson at school? Do some classes just seem like they don't fit you, or that you will never be very good at some subjects? Well this could be because of the way you are being taught, whether by a computer program or a teacher. What if a computer could detect when you are not understanding part of a lesson? What if it could alter the lesson, or repeat specific parts so that you know what is being taught? Well that's what Professor Thomas Huang and Professor Nicu Sebe have designed; a computer program that can change and adapt to your needs in school when you are bored or confused.

The computer starts by constructing a 3-D model of the face. Movement of one or more of the major 44 facial muscles is called an "action unit." Dr. Huang then uses the work of psychologists, such as Dr. Paul Eckman. Eckman created FACS, which is an acronym for Facial Action Coding System. He classified six main emotions that humans experience, and connected each of them with characteristic movements of the facial muscles.

Using video imagery the emotion-recognition software, that Dr. Huang has designed, can track your facial movements and detect your emotions. Dr. Huang believes that this software could be extremely useful in a classroom. "The classroom computer could recognize when a student is becoming confused or bored," Dr. Huang predicts. "Then it could modify the lesson, like an effective human instructor."

But what would be better about an emotion-detecting computer than a great teacher? Well, the computer has the ability to tell the students' emotions to a much higher degree than any other human could. The two could even be used in tandem, with the teacher taking advantage of the information the computer outputs about his or her pupils' emotions. If the software is properly used and designed, it could become a great tool in any school. I think that if teacher's use this tool properly, teaching would be easier, and students would learn and retain more information. All this would inevitably lead to better test scores and higher overall GPA.

It might take many years, but I think that if the technology is perfected and used properly, this could be one of the most amazing innovations for years to come. For a teacher to know what his students are feeling and how he can convey information for them to better understand would change teaching as we know it. The Facial Action Coding System could be revolutionary in the classroom. It could make school more interesting for those that find it boring, or those that find it difficult. It could make harder subjects easier on some students. That is why I think we should use this technology to read students' emotional expressions.

Score: 4