Many recognized specialists in the knowledge areas where Korzybski claimed to have anchored general semantics—biology, epistemology , mathematics, neurology, physics, psychiatry, etc. Keyser , C. Bridges , W. Ritter , P. Bridgman , G. Korzybski wrote in the preface to the third edition of Science and Sanity that general semantics "turned out to be an empirical natural science. So Black summed up general semantics as "some hypothetical neurology fortified with dogmatic metaphysics.