Szukana fraza: [Abstract = "This article argues that both the structure and history of the sociology of knowledge produce presentism as an epistemological obstacle. A good example of this phenomenon is Ludwik Fleck`s position as both a classic and a forerunner of the sociology of knowledge. As a subdiscipline of sociology, with disciplinary ambitions, the sociology of knowledge explores facts concerning social contexts of the production and proliferation of knowledge."]