This book develops a modern evolutionary anthropological theory of the cognitive conditions for explanatory descriptions of the world. Within the broad framework of processual hermeneutics, this monograph studies rationality by investigating what are the fundamental cognitive mechanisms required for the cultural development of rational constructions. It analyses the basic cognitive competences through which the human being connects categories and operations in a manner that allows it to orient itself in the world. If both understanding and explaining are forms of human-specific orientation,...