Just for a moment, imagine spending the first 18 years of your life unaware that Nonverbal Communication exists. While going to school, playing sports, and attending family events, you are unaware of all non-verbal communication. Imagine, you are eating dinner with your entire family on your birthday. Everything’s going smoothly, until you mention how funny this cat video you saw on the internet was. As you explain, you do not notice the disinterest in the faces of your friends and family.
Nobody has verbally stated that they did not think the video was funny. So you assume everyone is enjoying your video explanation, when really, they’re not. While communicating you are not making any eye contact, but instead you are looking around the room, because all of your focus is on explaining the cat video verbally. You pay little attention to your body language because you do not even realize it exists as a form of communication.