text: Sometimes people have bad days, and it can have a huge impact on others, but only if people choose to show it. Human emotion can be displayed in many ways. Some ways emotion can be expressed are through body language and facial movements/changes. However one chooses to show their emotion is all their decision, and it does not need to be known by everyone else. The Facial Action Coding Sytem is not valuable because it is a person's own choice to decide whether or not they want someone else to know how they are feeling, emotions are not relevant to students in a classroom, and there are not many ways that knowing emotions can benefit people in their careers.