The Weight of the Signature: Ethics and Moral Responsibility in Artificial Intelligence

This paper argues that contemporary AI-driven decision systems intensify a form of algorithmic consequentialism in which legitimacy is reduced to predictive performance, while the justificatory structure of judgment is progressively displaced. Against functionalist accounts that treat morally relevant effects as sufficient for moral agency, the paper defends a stricter thesis: normative authority requires ontological vulnerability—the capacity to appropriate an act as one’s own, to answer for it through reasons, and to assume its consequences as a price of freedom. Because current AI systems operate through correlation without semantic understanding, they can generate outputs but cannot sign them in the existential sense that grounds accountability. The analysis distinguishes human reason as a “glass box” (opaque in mechanism yet traceable in justification) from algorithmic “black boxes” whose opacity is constitutive rather than merely technical. To translate this diagnosis into institutional safeguards, the paper introduces the Λ (Lambda) Operator as a binary criterion of reflexive appropriation capacity and proposes a Proof of Signature (PoS) protocol requiring that any high-impact decision assisted by AI be regenerated, appropriated, and explicitly signed by a human agent with Λ = 1. The COMPAS/State v. Loomis line of cases is used to illustrate how explainability tools cannot substitute for imputability, and why a right to explanation is ultimately a right to a responsible signer.