A good presentation will have questions afterwards. All too often, the speaker answers by saying “That is a great question,” or something like that. It may seem like you are congratulating the brave questioner for their brilliance, so you may think it is a good thing to do. It is not.
The reason is that this answer takes the listeners’ attention away from the substance of your talk and makes them start thinking about questions, good, bad, stupid, or brilliant, instead. This is not what you want. You want them to think about the material you have presented.
Besides, why would you say this is a good question and that one is a bad one? Of course no one ever says something is a bad question, so if you don’t say good to every question, then when you don’t it seems like they are bad questions. There are questions that are more profound than others, but what you want is for people to keep thinking about the cool stuff you just presented.
Saying “That is a good question” interrupts the conversation. This may be what you want as you struggle for the best answer. But there is a better alternative. Repeat the question so everyone can know what it is. This is particularly important in large rooms. As you repeat the question, you can formulate your answer, keeping everyone’s thoughts on your great topic.
This is one more little way to forge ahead with talks.