An idea, a system, an organisation or person has some sort of consistency. Either it experiences itself as consistent to some extent or it is experienced as discussed as if it were consistent.
Within that very consistency is the truth, that it is always made up of an argument, some sort of struggle, emotional or ideological, physical.
So something might split off and no longer be the original thing. Call itself another idea, or maybe another style of music.
Maybe ideas are predominant. People don’t break into two. That’s just what we recognise as a madness. But ideas do. Emotions do. They really can change violently. And also they can then come back again later. And then the other bit is there. These are the things that carry the people so the human experience of something splitting off them is off themselves. That’s what they are.