The optimal number of people to reach decisions and solve problems together is 5. Research has also shown that project groups in the field of research and development only evolve their full potential after three years. There after their performance drop off rapidly. Some of the reasons for this are too much encapsulation, no longer being open to outside stimuli and the ossification of standards. Innovative solutions to problems can obviously no longer be expected. This is an argument for actively bringing about one or two changes in the team after three years, as long as it has the task of developing things together again and again.
The rough objective is always the same: to find a own identity, to improve the working ability, th share values and mindsets and to grow as a team. Quite simple, really. But in reality it is not.
The advantages of a team only come to fruition if there is fundamental trust in its integrity and competence.
Trust, however, either develops or it does not.
Facilitation and related interventions are very helpful in developing trust and accelerate a development in the right direction.