There are times when an instructor can be asked a question that he/she does not know the answer to. Instead of admitting to this fact, they try to avoid embarrassment by making up an answer that may be invalid. We must understand that teaching is an evolving profession and it is fine to make mistakes and admit inconsistencies in knowledge in a particular field. The best response should be: "I have no clue; however, I will be happy to check on that for you after class."
