ABSTRACT
It is a body of knowledge concerned chiefly with’acquiring, producing and exchanging material things and immaterial services, with a minimum expenditure of energy, time, and materials. A tribe living where there is an abundance of food and other necessaries all the year round would have little need or incentive to acquire knowledge and habits of economy. Scarcity of food all the time would not necessarily lead to economy, but would merely cause some accumulation of knowledge of the nearest places for obtaining food at a given season, and an amount of searching for it commensurate with the degree of appetite.
