The world of daily life consists of two points of reference. We have for example, here and there, in and out, up and down, good and evil, and so on and so forth. So, properly speaking, our perception of our lives is two-dimensional. None of what we perceive ourselves doing has depth. A sorcerer perceives his actions with depth. His actions are tridimensional for him. They have a third point of reference. Our points of reference are obtained primarily from our sense perception. Our senses perceive and differentiate what is immediate to us from what is not. Using that basic distinction we derive the rest.