Real Man as a Datum Economics deals with the real actions of real men. Man with all his weaknesses and limitations, every man as he lives and acts, is the subject matter of catallactics.
Every human action is a theme of praxeology.
The subject matter of praxeology is not only the study of society, societal relations, and mass phenomena, but the study of all human actions. There is no yardstick that a scientific investigation can apply to human action other than that of the ultimate goals the acting individual wants to realize in embarking upon a definite action. The ultimate goals themselves are beyond and above any criticism. Nobody is called upon to establish what could make another man happy. What an unaffected observer can question is merely whether or not the means chosen for the attainment of these ultimate goals are fit to bring about the results sought by the actor.