One of the implications of the idea of separation is the illusion of a split mind. We believe, imagine, dream that there is a part of our mind that is separate from God. This part is the ego, and as we live in this imagined world, we listen to the ego as we make our day-to-day decisions. We believe the ego has our best interest at heart, and we believe that without the ego, we would not be able to survive in this world.