ABSTRACT
The term 'praxiology' usually rings a bell, but when one investigates its usage closer, people frequently cannot associate it with anything more than the name of Ludwig von Mises. Kotarbinski's praxiology certainly has a few things in common with the work of Mises. The concept of basic action, presented in chapter two of Kotarbinski's main work is already implied by the idea of 'the elements of action', the 'analytic description' of which is taken to be one of the most important tasks of praxiology. According to Kotarbinski, actions-complex activities-are built of 'simple acts'. 'Simple acts' build human agency in the sense that they are 'atoms' of actions. Actions are complex, because they are made by something more basic. If praxiology is so brilliant and contains so innovative ideas, then it should already be a part of the mainstream action theory-it should be known. But it is not.
