A former sales manager told me that there are no dumb questions. In theory, that makes sense because if you don't know something then you should ask. But in reality with the resources available to us there are dumb questions. The saying there are no dumb questions allows people to not think, consider, or research the question or problem. For example, if you ask someone a question in which they've already answered but you weren't paying attention, then that is a dumb question. This does not mean you should not ask questions if you have doubts or you need clarification; however, it is important to listen, think, and consider before asking questions.