Finally, control over system trust demands increasing expert knowledge. That goes without saying in financial affairs and truth. Here only an expert can make even a cursory examination of what are indications of trustworthiness. But today even an appraisal of political forces and developments demands an exacting amount of detailed knowledge, mainly about people, roles and organizations, which can only be gained by taking an active part in the political process. In practical terms, control over trust can be exercised only as someone's main occupation. Everybody else must rely on the specialist involved in such control, and thus is forced to remain on the periphery of events.

Niklas Luhmann, Trust and Power, loc. 233