The medical profession is justly conservative. Human life should not be considered as the proper material for wild experiments.Conservatism, however, is too often a welcome excuse for lazy minds, loath to adapt themselves to fast changing conditions.Remember the scornful reception which first was accorded to Freud's discoveries in the domain of the unconscious.When after years of patient observations, he finally decided to appear before medical bodies to tell them modestly of some facts which always recurred in his dream and his patients' dreams, he was first laughed at and then avoided as a crank.