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.