Observation Provides Data on Problems, but Cannot Solve Them

A good illustration of the scientific method, in which observations are made for the purpose of identifying difficulties and analyzing situations, is the procedure followed by a physician when he makes a diagnosis. A doctor does not write a prescription solely on the basis of what his patient tells him; he uses instruments to take the patient’s temperature to examine his feces, and to analyze his urine. It is only after he has made these examinations that he writes his prescription; without...