Projection is the study of how to get the most power out of any technique staying within balance and staying in the principle of changeableness.  Power is achieved from the ground and gravity.  Through the development of a good body that is relaxed yet firm, one can provide an excellent conduit for energy to travel through the body unitarily and to project out of the body into a target.  The project is studied for its own merits and how it would fit into an entire encounter.  Percentages and probabilities are considered so that one is constantly making the optimal choice in combat regarding Projection.