Non-naturalism is a broad term for all performance styles that are not dependent on the life-like representation of everyday life and is based on the work of Antonin Artaud (Theatre of Cruelty), Bertolt Brecht (Epic Theatre) and Jerzy Grotowski (Poor Theatre). It can allow an actor to explore and present ideas or stories conceptually. Non-naturalism does not seek to re-create life as it is lived, but is focused more on passing comment on, or responding to, aspects of the real world. Non-naturalistic performance can occur in any space and is not dependent on specific resources. Non-naturalistic performance work might include the manipulation of both naturalistic and non-naturalistic conventions.