There can be little doubt of the multiple complexities facing law in the twenty-first century. Climate change alone presents a challenge of unprecedented global complexity for legal systems – a complexity arising, moreover, directly from the ‘complexity of the climate system [itself:] its myriad of parts, interactions, feedbacks and unsolved mysteries’. 1 In the face of such complexities, law's traditional institutional silos and path-dependent responses (such as the institutional and doctrinal separation between, for example, human rights law and climate change law) seem increasingly exposed as inadequate