Putnam, H., "The nature of mental states."
('I. Identity questions,' 'II. Is pain a brain state?,' 'III. Functional state versus brain state,' 'IV. Functional state versus befavior disposition,' 'V. Methodological consideration.')
いわゆる Machine Functionalism ということで．V. 以外はあくまで経験的理論であるとする点は要注目．