This book examines a persistent and fascinating question about the continuity of legal systems: when is a legal system existing at one time the same legal system that exists at another time? The book's distinctive approach to this question is to combine abstract critical analysis of two of the most developed theories of legal systems - those of Hans Kelsen and Joseph Raz - with an evaluation of their capacity, in practice, to explain the facts, attitudes, and normative standards for which they purport to account. That evaluation is undertaken by reference to Australian constitutional law and...