nobody ever told me that...

Parmenides was among the first to propose an ontological characterization of the fundamental nature of reality.Ontology is the philosophical study of the nature of being, becoming, existence, or reality, as well as the basic categories of being and their relations. Traditionally listed as a part of the major branch of philosophy known as metaphysics, ontology deals with questions concerning what entities exist or can be said to exist, and how such entities can be grouped, related within a hierarchy, and subdivided according to similarities and differences. In the broadest sense, Ontologists investigate what makes a human – human, relying on institutional, social, and technical conventions representing a nexus of intellectual activities.