Nevertheless, Dr. Parsons offers something in her book that may conceivably help to a better understanding of them, and that is the doctrine that the strange persistence of these rubber-stamp ideas, often unintelligible and sometimes plainly absurd, is due to fear, and that this fear is the product of a very real danger. The safety of human society lies in the assumption that every individual composing it, in a given situation, will act in a manner hitherto approved as seemly. That is to say, he is expected to react to his environment according to a fixed pattern, not necessarily because that pattern is the best imaginable, but simply because it is determined and understood. If he fails to do so, if he reacts in a novel manner—conducive, perhaps, to his better advantage or to what he thinks is his better advantage—then he disappoints the expectation of those around him, and forces them to meet the new situation he has created by the exercise of independent thought. Such independent thought, to a good many men, is quite impossible, and to the overwhelming majority of men, extremely painful. “To all of us,” says Dr. Parsons, “to the animal, to the savage and to the civilized being, few demands are as uncomfortable, ... disquieting or fearful, as the call to innovate.... Adaptations we all of us dislike or hate. We dodge or shirk them as best we may.” And the man who compels us to make them against our wills we punish by withdrawing from him that understanding and friendliness which he, in turn, looks for and counts upon. In other words, we set him apart as one who is anti-social and not to be dealt with, and according as his rebellion has been small or great, we call him a boor or a criminal.