Debriefing, where all involved review expectations, issues and outcomes after the event, is very useful for guiding better leadership in the future. It is best to have it in conditions that are conducive to relaxed, comfortable conversation. Debriefs may be done after any stage of an activity, but most commonly when it has been completed. On longer trips, debriefing after a logical section may lead to useful input which can be used to improve later stages. Debriefings may be formal or informal. Good leaders use them to find out how others viewed the activity, and use the findings as a basis for a review of their way of doing things. Not all debriefs will be positive, some may produce surprising comments, and others will be critical of the leadership. However, all leaders can gain much valuable information to improve their skills.