Ethical failure is rarely caused by bad intentions or individual weakness. It is caused by systems that misallocate responsibility, defer accountability, and then demand moral justification after harm has already become unavoidable. In Immanuel Kant and the Dissolution of Deontology: The Boundary, Not the Rule , Samantha L. King revisits Kant’s ethical project from a structural perspective. Rather than treating deontology as a collection of rules for individual behavior, the book reframes Kant’s categorical constraint as a boundary condition for system design. Its purpose is not to prohibit action, but to prevent ethics from being used to rationalize harm after governance has already failed. Across institutions, moral dilemmas tend to appear at the same points. Incentives collapse. Authority separates from responsibility. Control disappears upstream, while judgment is imposed downstream. In these moments, ethical language becomes louder as structural accountability vanishes. This book argues that ethics is not a tool for choosing better under impossible conditions. It is a design discipline meant to prevent those conditions from arising at all. Drawing on philosophy, governance, and institutional analysis, the book examines: How moral dilemmas are produced by incentive failure rather than moral complexity - Why responsibility is engineered to flow downward instead of remaining attached to design - The conditions under which moral agency can meaningfully exist - Ethics as a constraint on architecture rather than a guide for personal sacrifice - Why legitimacy, not morality, is what systems actually lose - Refusal as a structural act rather than a moral gesture Written for readers interested in philosophy, law, governance, and institutional design, this book rejects moral theater in favor of mechanism. It does not offer comfort, absolution, or simplified answers. It offers a framework for identifying where ethics is being misused and how it can be reinserted upstream without collapse.