Natural phenomena consist of the entirety of the following: existent and known state characteristics and their values; existent but unknown state characteristics and their values; state characteristics inconceivable by us and their values; existent and known relations as well as relation features; existent but unknown relations and relation features, relations and relation features inconceivable by us. We assume that the entirety of the above creates objects by existing organising principles, with these objects constituting non-empty subsets of a certain entirety of natural phenomena. Creation may also happen with the so-called PMSB method. The PMSB method is of very high significance for calculating optima in expert systems. The entirety of past, present and future natural phenomena constitutes the universe.