Biological science does not try to distinguish between health and disease. Biology is concerned with the interaction between living organisms and their environment. What we call health or disease is quite irrelevant.These reactions between the individual and his environment are complex. The individual and his surroundings form an integrated system which we can arbitrarily divide into two parts. There is an “external” component, by which we mean such factors as light, heat, percentage of oxygen in the air, quantity of minerals (...) or vitamins in food, micro-organisms in food or air, and so on. These can induce changes in what we arbitrarily call the “internal” component. Here we include such crude factors as anatomical structures, or finer details like composition of intercellular fluid, or secretions of glands, or changes of electrical potential in nerve or muscle. (shrink)

It is an interesting paradox that on the one hand intemperate enthusiasm greets new medical discoveries. On the other hand, the lack of science in medicine is paraded from time to time, usually as a matter of apologetics, as, when a physician wishes to excuse an error, a lawyer to discredit a physician, or a jury to render a verdict contrary to medical evidence. Philosophers who insist on the mathematical or quantitative aspects in any definition of science ascribe very little (...) that is truly scientific to biology in general or to its daughter medicine in particular. Jerome Frank comments approvingly that “many scientific-minded physicians today deny that medicine is, or is likely ever to be, a science.” Articulate physicians themselves may be highly critical. Dr. Ian Stevenson, for example, declares, “Medicine will not achieve the status of a science until the basic laws of health and disease have been disclosed. But the search for these laws has hardly begun.” Stevenson goes on to point out that instead of seeking basic laws, medicine is concentrating on facts, from which no laws emerge. (shrink)