Embodied most emphatically by the writings of Rene Descartes, substance dualism outlines a specific ontological framework for the understanding of mind. Dualism specifically represents a philosophic uneasiness in the idea that mind is merely a projection of the physical, containing no innate or self-defining properties. More specifically, as evidenced in the writings of Descartes, and also Alvin Plantinga, the dualist seeks to ascribe a sort of substance quality to the mind, although quite distinct from that of the physical, in it's own realm so to speak. Further analysis shows that central to any dualist argument is a necessary individuality of mind and body respectively. In fact, Descartes meticulously severs (only to subsequently reconnect for distinctive purposes) the mind from the body, not to say that mind does not include some physical properties as well, only that it also exists above and beyond these distinctions in a separate realm of being. Relevant examination of the criterion pervading substance dualism reveals the necessary logic of its structure, which will be discussed in due turn, but more importantly several potential problems as well, insofar as common sense and logic requires, are seen to plague the viability of such an ontology in explaining the annals of mind.…