a defensive and vulnerable position due to its lack of secure class identity. He elaborated on these ideas about the middle class in Klassesamfundeti Stobegryden (Class Society in the Melting Pot), after World War II. In London, Geiger and David Glass formed a subcommittee on social stratification and mobility and together they started a comparative study of international mobility and stratification. In 1949, Geiger did an empirical study of social stratification in Aarhus. The study was conducted through the general census of Aarhus, by adding a question about father's occupation and father-in-law's occupation, in addition to asking the subject's own occupation. The participants included over 40,000 men. The study was done carefully and objectively. He took all factors and variables into account to ensure validity. Instead of looking at individual relationships for evidence in his analysis, he paid attention to group fluctuations that affected large scale changes in size and social rank of groups and instead of looking at vertical mobility, he looked at mobility between generations, throughout eighteen occupational categories. The main result of the data was a decrease in social mobility over time. In Geiger's analysis, he took these findings to reflect a period of increasing stability following a period of stratification type transition. He attributed this to the democratization of Denmark in the 1930s and 1940s that he claims led to a decrease in the need and desire for upward mobility. Ideology and Value-free thought Ideology to Geiger is "a concept in the theory of knowledge," or "the atheoretical taken theoretically." His actual definition of ideology was: A statement that has or is presented to have an apparent meaning, claiming to be theoretical and factual while maintaining elements that are not theoretical, objective, or empirically supported and/or valid. His theory of ideology, resting on a methodological basis, was: "That to claim objective truth from a creation of the imagination is an ideology and is invalid". Geiger was very concerned with Value Freedom, or the difference between value and fact, and the belief that Science cannot be valid when making Value-judgements. A Value-judgement is an ideological statement because it disguises a value as a statement of fact, claiming to be valid and objective. Geiger was led to these beliefs by the Uppsala school and Hägerstrom. Geiger's Value Nihilism refers to his advocacy for the illegitimacy of social norms made by moral claims. Here, he stands in opposition to