Steven Lehar is an independent researcher who has made a number of radical proposals on theories of philosophy, psychology, biological vision, and consciousness. His most radical theory is that the solid spatial world that we see around us in visual experience is not the world itself, but merely a miniature replica of that world in an internal representation. This is known variously as the theory of Indirect Perception, Indirect Realism, Epistemological Dualism, and Representationalism.