The human body is composed of physical matter; it possesses characteristics common to all matter that is: "extension in space and the capacity for movement." If the body is matter then the laws of physics and mechanics that account for movement and action in the physical world must also apply to its functioning. It is appropriate to use the machine analogy and think of the human being as a biological machine; no different than other machines made up of atoms and set in motion by energy. Human functioning and mobility is governed by electro-mechanical laws; as complex as they may be, they are...