This leads us to a broader question. To what extent can lower-level, elemental, descriptions constitute full accounts of higher-level phenomena in the body? (Compare the related discussion at §6.4.) Two examples might be used to highlight the question: would a sufficiently full account of the nature of the mixture of the brain be an exhaustive account of what is happening in the psuchē? And could a sufficiently full account of the balance of qualities—the most basic physical level—in a human body constitute an exhaustive account also (i) of its higher-level constituents, (ii) of the inception and (iii) of the nature of the diseases that befall the animal in that state, e.g., of a particular fever, or other disease state?