We only hear half of what we listen to. Perhaps that is why most people instinctively use tautology when they write or speak. Tautology is the use of different words to say the same thing or repeating the same thing twice, often in the same sentence, using different words. Most people don’t even know that they’re doing it. Tautology clutters otherwise simple communication. Insurance and subrogation claims professionals communicate for a living and should be aware of one of the most common mistakes made in professional and interpersonal communication.