This document discusses facial expressions and their role in communication. It notes that Tomkins conducted the first study showing facial expressions are reliably associated with emotional states. There are six universal facial expressions - happiness, sadness, surprise, disgust, fear, and anger. Each expression involves distinctive configurations of the eyebrows, eyelids, nose, mouth, and other facial features. However, facial expressions fail in modern communication methods like phone calls, texts, and emails, as well as for people with disabilities impairing vision or muscle movement. While technology is changing communication, facial expressions remain a basic and universal tool.