Making sure that teams or groups function well is a key task for a leader. If a team is effective then productivity but also entrepreneurship and innovation will result.
A simple technique to make a group aware of stagnation and repetitive behavior and to find out how to proceed in a more productive or constructive way.
Also a useful technique for preventing tensions from escalating into conflict.
When you observe repeated discussions on the same topic, people getting distracted, confusion, repetitious interruptions, indirect communication, repeated messages etc. When this happens an undercurrent can be felt that makes meetings/workplaces ineffective.