Moreover, we have to acknowledge that the relation between confidence and trust is not a simple zero-sum game in which the more confidence is given the less trust is required and vice versa. Such a theory would neglect the structural complexity of social systems as an intervening variable. But a social evolution which achieves increasingly complex societies may in fact generate systems which require more confidence as a prerequisite of participation and more trust as a condition of the best utilization of chances and opportunities.

Diego Gambetta, Trust - Making and Breaking…, loc. 1387