Normally in plenary sessions, speakers speak and the audience listen and maybe prepare themselves to ask questions. The process with "reflectors" is a bit different. First, the "reflectors" will try to listen to as much as they can of the day's discussions - in theme groups, in workshops, even in corridors and meal queues! Then, in the plenary session, some of them will "reflect" on what they've heard, questions raised and questions ignored, striking insights they've heard, conflicts that haven't been resolved, or points where people have simply been failing to connect with each other.