Introduction Economics is the youngest of all sciences. But it opened to human science a domain previously inaccessible and never thought of — the regularity in the sequence and interdependence of market phenomena. Economic scientific inquiry is based on the uniformity and immutability of the logical structure of the human mind. It therefore can achieve results valid for all eras, races, and social classes. The theory of catallactics (the science of exchanges) has to be built upon the solid foundation of the general theory of human action, praxeology. Economic theory is quite obviously not...