In the presentation guide, repeating questions in order to involve the whole audience is said to be a golden rule for which there is no exception. I have no doubt in the importance of repeating questions, but speakers must be careful not to distress themselves and the audience.

In our department, consisting of 6 groups, we have a weekly colloquium. Once or twice a year, each member gets a chance to present a 45-minute talk for the whole department. During the talk the speaker gets as much comments on her presentation skills as she gets scientific questions. As a result, the presentation-skills of the members of our department improve much faster than the other institute-members who do not practice as much.

One of the major training items is of-course repeating the questions. A speaker can be interrupted more than 20 times during his 45 minutes if she intermittently forgets to repeat the questions. After the third or forth warning, sometimes a large banner will be raised by the chairman or another group leader. But, usually the comment is verbal:

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