The Emergence of Moral Normativity: Fragility, Agency, Modulation, and Coupling

Why does morality exist? Under what structural conditions does moral normativity emerge? This paper argues that morality is the regulatory structure governing how agents may act within fragile responsibility couplings. Four conditions are jointly necessary for moral wrongness to be applicable: fragility (at least one party has degradable action-capacity), agency (at least one party has genuine alternatives), modulation (alternatives differ in their effects on the fragile party’s action capacity), and coupling (the parties stand in an epistemically accessible dependence relation). When all four obtain, actions can strengthen or weaken the viability of the coupling, and wrongness becomes structurally well-defined. When any condition fails, losses may still occur, but they are tragic rather than wrong. The paper formalizes this using viability theory, derives a viability condition on couplings that excludes predatory structures, reinterprets loss as the empirical signature of coupling-degradation, and proves that in a hypothetical world without degradable coupling, moral categories do not arise. A structural asymmetry among coupling types emerges as a consequence: predatory couplings are dynamically unstable, maintenance couplings merely preserve slack, and mutual couplings can generate slack over time—a result of the viability condition rather than a teleological explanation of morality.