Reckoning of an event with regards to a recognized group of scientific concepts, details, and assumptions. Standard types of explanation are reductionistic, analyzing phenomena into elements and explaining how they incorporate to generate the occurrence; ontogenic, concerning the phenomenon to a common group of developmental phases; empiricistic, identifying a phenomenon with regard to the circumstances which have been recognized to generate it; or metaphoric or categorical, recognizing a phenomenon as comparable in some vital areas to other phenomena presently comprehended. This kind of an explanation expressed methodically is typically referred to as a theory.