In one study, for example, scientists used analysis to diagnose 130 patients with essential hypertension. Then the scientists used analysis again to identify biochemical markers that differentiated the three yin-yang groups, which pointed them toward possible variations in the mechanisms of hypertension, and possible explanations for why patients may respond differently to drug therapy. They did essentially the same thing in a study of heart disease. We believe the same opportunity for cross-camp collaboration exists in chiropractic. This distinction, more than almost any other, shows why the two approaches are complementary.
Complementarity is mainly methodological.
That is, it exists when dual aspects of nature can be accessed only through mutually exclusive methodologies, such that observing one aspect necessarily hides the other. This characterizes the relationship between energy and matter. To observe energetic properties like rhythm and motion, the system must freely move. To observe material properties like mechanism and structure, the system must not freely move. The two aspects thus require mutually exclusive methodologies, and can be understood, therefore, only in opposite, though complementary, ways.