Feeling separated

At the beginning of the universe, separated spiritual entities were dissoziated in the universe. All entities in the universe are individuals. Spiritual entities are punctiform entities. They live in a zero dimensional world.

How do they know, that they are separated? The only way to distinguish each other is the content of their minds. They feel not to be the same than others.
They have a spiritual distance to each other, triggered by the different content of their minds, everyone can read.