Cognition and Fact

Within the last ten years, the interest of historians and philosophers of science in the epistemological writings of the Polish medical microbiologist Ludwik Fleck (1896-1961), who had up to then been almost completely unknown, has advanced with great strides. His main writings on epistemological questions were published in the mid-1930''s, but they remained almost unnoticed. Today, however, one m...