Regulatory Texts and Case Law as Ground Truth in Emerging Domains

In domains where no unified academic theory has yet consolidated, practitioners face a calibration problem: against what baseline does one evaluate a classification framework, a taxonomy, or a data model? This note argues that enacted law and judicial decisions constitute a practically available, historically grounded source of ground truth for such domains. We describe an approach---regulatory delta analysis---that examines how legislation and case law shift across time, with the aim of surfacing friction points, coordination patterns, and the constraints under which each version of a rule was written. The approach is not a critique of legislative bodies or courts; it is a method for reading the record they have already produced. Limitations are considered throughout. The note is grounded in applied work from the Indian Food Informatics Data (IFID) project but the reasoning is intended to transfer to other domains with similar structural properties.