" Now microbes seem to have an enormous mutation rate (or some other method of hereditary adaptation), for, within a few years, they have evolved new drug-resistant strains. We humans cannot perform such evolutionary feats. But we can simulate major adaptive mutations by adding iodine to the drinking water, or by putting drops into the eyes of the newborn, to protect them from enemies against which our natural defences are inadequate. "

― Arthur Koestler , The Ghost in the Machine