text: The Facial Action Coding System has so many flaws in it that prevent it from being useful. The article states that this technology can recognize when a student is confused or bored. The problem with that is the fact that a person can fake emotions. If the students wanted to try to be funny they could mess with the system and change something that was working. In the article, Dr. Huang said, "Then it could modify the lesson, like an effective teacher." An effective teacher wouldn't change something just because a couple people ar bored or confused. This system also doesn't factor in the chances of someone having a bad day. If someone is having a bad day confused emotions could already be happening before the lesson. This would mess everything up.