Le problème de la démarcation de Karl Popper

Karl Popper, as a critical rationalist, was an opponent of all forms of scepticism, conventionalism and scientific relativism. In 1935 he wrote Logik der Forschung. Zur Erkenntnistheorie der modernen Naturwissenschaft, later translating the book into English and publishing it as The Logic of Scientific Discovery (1959), considered pioneering work in his field. Many of the arguments in this book are directed against members of the "Vienna Circle", such as Moritz Schlick, Otto Neurath, Rudolph Carnap, Hans Reichenbach, Carl Hempel and Herbert Feigl. Popper agrees with them on general aspects of scientific methodology and their distrust of traditional philosophical methodology, but his solutions have been markedly different. Popper has contributed extensively to debates about general scientific methodology, the demarcation of pseudoscience, the nature of probability, and social science methodology.