Theoretical knowledge is only a small and by no means the most important part of what passed for knowledge in a society… the primary knowledge about … - Peter L. Berger

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Theoretical knowledge is only a small and by no means the most important part of what passed for knowledge in a society… the primary knowledge about the institutional order is knowledge... is the sum total of ‘what everybody knows’ about a social world, an assemblage of maxims, morals, proverbial nuggets of wisdom, values and beliefs, myths, and so forth.