It's about how cells join one with another to function collectively as organisms while retaining essential integrity. There is nothing inside cells to make them function on their own in a certain way. Differentiation is present in cell and organ functioning, in all parts of healthy bodies, and in a healthy body politic. Differentiation is a principle of life . Excessive togetherness blunts creativity.
Differentiation is about one's capacity to be autonomous while remaining connected.
That term can stand to be opened up a bit. Non-anxious presence means staying connected while staying focused on the bigger picture. Differentiation isn't about how many people are in the room. It's about the kind of connectedness that is inside the head of a leader. Clear and focused communication reduces anxiety and promotes vision and creativity in others.