A First Approach to Legal Obsolescence in an Age of Technological Change

Abstract

This article develops a conceptual framework for understanding legal obsolescence in an age of technological change. Although claims that laws become obsolete are common in law and technology scholarship, the concept is rarely defined with precision to allow consistent identification, evaluation or prevention. Addressing this gap, the article asks what it means to call a legal rule obsolete and what conditions justify that judgement. The article’s main contribution is a unifying concept of legal obsolescence grounded in a rule’s capacity to produce predominantly desirable social effects. Based on a critical literature review of 62 works across multiple legal fields, languages and scholarly traditions, the analysis identifies changes in circumstances as the trigger of obsolescence, insofar as they undermine the assumptions upon which legal rules depend. By comparing cases labelled as obsolete in the literature, the article shows that obsolescence manifests in four non-exclusive pathways: diminished efficacy (reduced likelihood of enforcement and compliance); diminished effectiveness (a weakened means–ends relationship); expiration of purpose (when a rule’s original objectives are rendered moot by changed circumstances); and harmful operation (when continued application generates normatively problematic effects that were not anticipated by the lawmaker). The proposed framework clarifies that diagnosing obsolescence requires both empirical inquiry and normative judgement. It also shows how different manifestations of obsolescence call for different institutional responses and future-proofing strategies. By reframing legal obsolescence as a specific form of legal failure caused by unanticipated change, the article provides a shared vocabulary for evaluating existing rules and designing more resilient law-making approaches.