The gambling propensity is another subsidiary trait of the barbarian temperament. It is a concomitant variation of character of almost universal prevalence among sporting men and among men given to warlike and emulative activities generally. This trait also has a direct economic value. It is recognized to be a hindrance to the highest industrial efficiency of the aggregate in any community where it prevails in an appreciable degree. The gambling proclivity is doubtfully to be classed as a feature belonging exclusively to the predatory type of human nature. The chief factor in the gambling habit is the belief in luck; and this belief is apparently traceable, at least in its elements, to a stage in human evolution antedating the predatory culture. It may well have been under the predatory culture that the belief in luck was developed into the form in which it is present, as the chief element of the gambling proclivity, in the sporting temperament. It probably owes the specific form under which it occurs in the modern culture to the predatory discipline. But the belief in luck is in substance a habit of more ancient date than the predatory culture. It is one form of the artistic apprehension of things. The belief seems to be a trait carried over in substance from an earlier phase into the barbarian culture, and transmuted and transmitted through that culture to a later stage of human development under a specific form imposed by the predatory discipline. But in any case, it is to be taken as an archaic trait, inherited from a more or less remote past, more or less incompatible with the requirements of the modern industrial process, and more or less of a hindrance to the fullest efficiency of the collective economic life of the present.