Fourth person can only be truly grasped as an omnipresence.
The
fourth person would not be separate from the the
first speaker, it is a presence that is a part of all things, all places, and all times.
I could only imagine this is what religious folks assume God speaks, acts, or thinks like.
a person says to you, "I remember when I
crossed the street this morning"
"
fourth person" responses, "we remember when we crossed the street" or "we will
cross the street" or "we are crossing the street".
