SAM BOOKMAN is a SJD (doctoral) candidate at Harvard Law School. He completed an LLB (Hons) at the University of Auckland, and his LLM studies at Harvard Law School, where he was the recipient of the Kaufman Public Service Venture Fellowship. His work has been published in the New Zealand Law Review, the New Zealand Law Journal and New Zealand Universities Law Review. Sam worked as a judge's clerk for the Chief District Court Judge of New Zealand and is Staff Attorney at the Cyrus R. Vance Center for International Justice. MAX HARRIS's DPhil (PhD), completed at the University of Oxford as an Examination Fellow, was on the prerogative and third source, including the work of Bruce Harris. He holds a BA/LLB(Hons.) from the University of Auckland, and BCL and MPP degrees from the University of Oxford, where he was a Rhodes Scholar. HANNA WILBERG is an Associate Professor at the University of Auckland. Her main research areas are administrative law and the tort liability of public authorities. Her publications include Wilberg and Elliott (eds) The Scope and Intensity of Substantive Review (Hart, 2015). She has twice won the NZ Legal Research Foundation's annual best article award, most recently for a chapter entitled ''Interpretive Presumptions Assessed against Legislators' Understanding'' in Elliott, Varuhas and Wilson-Stark (eds), The Unity of Public Law? (Hart, 2018) 193. EDWARD WILLIS specialises in public law, with particular interests in constitutional theory, administrative decision-making, regulation and competition (antitrust) law. His current research interests include theorising unwritten constitutions, the role of public law values in shaping private law and private ordering, and regulatory design and implementation.