Legal Entanglement

Nicholas Godfrey; Ted Sichelman

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arXiv · 2511.03982

Legal Entanglement

Nicholas Godfrey·Ted Sichelman

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Abstract

Quantum entanglement is a phenomenon in which two physical systems are correlated in such a way that they appear to instantaneously affect one another, regardless of the distance between them. As commonly understood, Bell's Theorem famously demonstrates that any causal explanation of entanglement must discard either locality (the principle that nothing, including information, travels faster than light) or classical notions of realism (or both). Drawing on this concept, several legal scholars have metaphorically described 'entangled' legal concepts. For instance, if a state's highest court redefines the concept of 'foreseeability' in negligence law, this redefinition alters the concept of 'reasonable care' immediately in the eyes of the law. Godfrey (2024) is the first work to mathematically model entangled legal concepts, particularly in the context of legal interpretation. Here, we extend the quantification to the formulation and delineation of law (lawmaking) and the adjudication of law (judgment). In so doing, we connect legal entanglement to Sichelman's (2022) work on legal entropy, complexity, and the informational content of law. In addition to quantifying entanglement across various legal contexts, our approach provides broader insights. For example, it offers a more comprehensive analysis of the uses and limits of 'modularity' in law--specifically, the role legal boundaries (spatial or intangible) play in reducing information costs within legal systems. Moreover, we discuss how our model can improve theories of legal artificial intelligence. Finally, we explore the application of legal theory back to physics. If quantum physical entanglement operates analogously to legal entanglement, it requires discarding both locality and classical realism, though not in the manner commonly imagined.

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Nicholas Godfrey, Ted Sichelman. 2025-11-06. Legal Entanglement. https://arxiv.org/abs/2511.03982

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