How do social institutions exist? How do they direct our  conduct? The Opposite Mirrors defends the thesis that the  existence of institutions is a conventional matter. Ultimately they  exist because we believe in their existence, and because they play a  role in our practical reasoning. Human action necessarily has an  unpredictable aspect; human institutions perform an important task by  reducing uncertainty in our interactions. The author applies this  thesis to the most important institutions: the law and the monetary  system. In his analysis he connects many traditional topics of the  philosophy of law, social philosophy and the philosophy of social  sciences in a new way. He discusses the nature of rules, authority,  and power and analyzes the Hobbesian presuppositions which have been  dominant in legal theory and in the economic analyses of the state.  
  The book is written for legal theorists as well as for political and  social philosophers, and theoretically oriented social scientists.