I attended a coaching seminar last week. At the end of the seminar, there was a peer supervisory session that all the coaches presented their personal experience in small groups of three participants each.
One interesting ground rule was that we were reminded to share ideas, but not opinions. It means don’t make judgement on if other participants are right or wrong. In addition, each person was only allowed to share his/her own real life experience, but not “what if” or “what would have” scenarios. The purpose was to avoid idea sharing turning into discussion and/or debate.