text: On the other side of the spectrum, FACS can be used to replicate lessons or actions that students reacted positively too. "...new emotion-recognition software tracks these facial movements-" When these emotions are tracked, the lesson that is being taught to the class can be altered to better the success of the student. When a student reacts negatively to something that was said or shown, the software can take note that a student didn't like that. Then the lesson can be changed so the student can focus more on the learning rather than what they do or don't like.