I think everything in the subjective expression of human experience can be traced back to chemistry, biology, and ones family upbringing. Anything considered transcendental is just a lazy way of saying we don't know why something is the way it is, everything is based in materialism. If you really want to be able to read someone, ask about their upbringing and observe how they have react to interpersonal experience. Then, relate those things back to biology. We are unique, yes, but we are not in control of our uniqueness. We're just meat puppets subjected to the chemical reactions which manifest from the force of the Will.
