It breaks itself into lots and lots and lots of little things.
The little things interact with one another. They learn all sorts of interesting stuff.
The Unity persists in spite of the break-up. The little things remain dimly aware of it even as they prey on one another and squabble and fight.
Another word for the Unity is Love.
The little things are of temporary duration. They die and return to the Unity, taking their knowledge with them.
This is how the Universe learns about itself.