Key Elements of a Good Discussion:

• The discussion is focussed on a topic (and everybody understands what the topic is).
• Everybody actively participates in the discussion.
• The key concepts get described in different ways from different points of view.
• You -- the discussion leader -- may even learn something from the discussion.
• It is so lively and productive, that you hate to break it off, simply because time is running out.
• Key results get summarized at the end.