Since Husserl1 it has often been noted that the co-existence of people in daily interactions proceeds on the basis of a taken-for-granted certainty about the world (Husserl uses the slightly more abstract term world-certainty) unproblematically or, in any case, unproblematized. Disturbances remain the exception. The foundations of human co-existence and the conditions for its continuance normally do not need to be considered; actions do not need to be justified; motives do not need to be expressly obtained and displayed. Problematizings or applications are never excluded and always remain a possibility, but this non-actualized possibility usually already suffices as a basis for interaction. If no one takes it up, everything is in order.

XREF: Connects to Garfinkel's ethnomethodology and Schutz's phenomenological sociology, both building on Husserl's world-certainty concept.

Niklas Luhmann, Trust and Power, loc. 721