Abstract
The article deals with the ambiguous relation between fear and expertise, and examines how it affects institutions’ legitimation. In contemporary societies the so-called expert systems can be considered as powerful trust creators. However their power can also cause fear, as their control over the majority of everyday life tasks can have a “disabling” effect on lay people. This double-edged role deeply influences the relation between citizens and institutions, the latter considerably relying on expertise in order to be perceived as rational actors. Fear, therefore, can be considered as a central element in determining the legitimacy of institutions in modern societies.