We are surrounded by the unseen waves that are captured by the ears and felt in the body. We don't question it, because our bodies have been created with certain senses to prove the existence of these unseen things we call sound waves. Life is full of things we question the existence of, because we just can't see them, but our body is designed to sense the unseen. Just because we can't see with our eyes, doesn't mean we can feel within our being.