The sociology of knowledge must concern itself with whatever passes for “knowledge” in a society, regardless of the ultimate validity or invalidity (by whatever criteria) of such “knowledge”. And in so far as all human “knowledge” is developed, transmitted and maintained in social situations, the sociology of knowledge must seek to understand the process by which this is done in such a way that a taken-for-granted “reality congeals for the man in the street. In other words, we content that the sociology of knowledge is concerned with the analysis of the social construction of reality.

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