Kinds Without Structure Are Blind; Structure Without Kinds Is Empty: Remarks on the Methodology of Consciousness Science

Abstract This paper critically examines the challenges in consciousness research, with a focus on natural kind (NK) reasoning. It proposes supplementing NK reasoning with a structural realist framework, shifting the focus from identifying a natural kind of consciousness to understanding invariant structural relationships across diverse theories, thereby addressing divergence and ensuring coherence. By using predictive processing as a formal framework that underlies the diversity of consciousness accounts and characterises common structural patterns, the structural realist approach aims to integrate divergent theories, offering a more robust, objective, and unified understanding of consciousness that can supplement and guide natural kind reasoning.