text: A person's emotions do not involve other people. Although emotions can be caused by others, emotions do not have to be known by others. In the article "Making Mona Lisa Smile", by Nick D'Alto, the author states "For instance, you can probably tell how a friend is feeling simply by the look on her face." If a person can already make a guess on how someone may be feeling on their own, why would they need The Facial Action Coding System? This would be an actual waste of technology because it would be doing a natural job that a human can do on their own.