The text deals with Harold Garfinkels theorizing of what Karl Mannheim called ‘documentary meaning’, and established as a foundation of all historical disciplines, and what Garfinkel calls the ‘documentary method’ of lay and professional sociological reasoning. The commentary tries to establish the systematical position of the chapter in Garfinkel’s ‘Studies in Ethnomethodology’, and, indeed, in Garfinkel’s social theory at the time of publication. This position involves, and redefines, Weber’s definition of sociology, Schütz’s sociology of knowledge and especially, the very idea (...) of a common stock of. typifications, and the discovery of ‘historical time’, or ‘Geschichtlichkeit’ in each micro-sequential interaction. Some consequences are drawn, or sketched, for ethnomethodology as a steady thorn in the side of sociology, and vice versa: for lay and professional sociology as an equally steady thorn in the midst of ethnomethodology. (shrink)