he Realist approach takes a further step similar to Quinn’s, positing that the indeterminacy of law undermines the foundation of adjudication theory, making it an impossible, foundationless enterprise. Instead of attempting to justify legal outcomes solely on legal reasons, Realists propose replacing this foundational model with a descriptive and explanatory account, identifying which combinations of facts and reasons yield particular judicial decisions. This account, which aligns with Realism’s core claims, positions the theory of adjudication within jurisprudence and behavioral psychology, echoing Quinn’s view that epistemology becomes a chapter of psychology. For Realists, jurisprudence—and more specifically the theory of adjudication—naturally integrates into psychology due to the failure of foundational adjudication models, a stance bolstered by their claim that law is indeterminate. However, issues arise with this perspective: first, Realists do not assert that law is indeterminate in every case, weakening the analogy with Quinn. Second, adjudication theory is not inherently a foundational program. Third, even if legal reasons alone do not justify decisions, non-legal factors, such as morality or policy, might, suggesting this framework need not be described solely in naturalistic or causal terms. Finally, even if these problems are addressed, Realists’ argument for legal indeterminacy remains reliant on a conceptual understanding of the criteria for legality and legitimate sources, suggesting that not all jurisprudence is reducible to naturalism. 296.