Abstract

The recent scientific discoveries cast a new light on the classical distinction between the actual and the possible. A creative elaboration upon this theme, stimulated by works on modal logic and controversies around the semantics of Kripke, has been developed in contemporary discussions on epistemological aspects of quantum cosmology and on ontological preconditions of genetic determinants.Proceeding from new scientific theories, in the paper an attempt is undertaken to determine the ontological structure of nature in which one satisfactorily explains new data implied by these theories. In the context of contemporary physical discoveries the very concept of possible being is reinterpreted. A new version of moderate Platonism is proposed in a form of modified modal actualism. Its classical counterpart was earlier developed by Robert C. Stalnaker and Alvin Plantinga in their ontology of the possible worlds