The Justificatory Architecture of Non-Command: Normative Unavailability, Structural Legitimacy, and the Lexical Shield

The justificatory turn in contemporary political philosophy — from Rawlsian justification to Forst's right to justification to Darwall's second-personal account — has produced a sophisticated account of what justification requires. It has not produced an account of the structural conditions under which justification becomes impossible: not difficult, not incomplete, but constitutively incapable of reaching its addressees. This paper provides that account. Drawing on two companion papers that establish agency collapse (Smax) and Determinate Preference Failure (DPF) as structural results of meritocratic institutional arrangements under contemporary labour conditions, this paper develops three connected arguments. First, the formal analysis of normative unavailability: the property of being no longer addressable as the recipient of justificatory reasons. I show that this property is constitutive, not merely obstructive — when it fails, justification cannot succeed, not merely struggles. Second, and crucially, normative unavailability is asymmetric: it blocks the imposition of burdens on the collapsed subject but intensifies, rather than diminishes, the obligations of protection owed to her. Vulnerability is not license. Third, this asymmetry generates two categorical institutional obligations — a negative obligation to refrain from imposing meritocratic burdens in the absence of the Lexical Shield, and a positive obligation to construct and maintain the Shield itself. The Shield's three components (income, housing, capability restoration) are specified as the institutional expression of the Lexical Priority Maximum (PLM): a justificatory threshold that is lexically prior to welfare considerations because it is the precondition of legitimacy for any distribution. This distinguishes Non-Command from sufficientarianism, from luck egalitarianism, and from republican non-domination — though it grounds, rather than competes with, all three. The paper extends Forst by showing that the right to justification is institutionally hollow without a guarantee of its conditions; extends Pettit by identifying a form of domination deeper than arbitrary interference; and provides the formal bridge between justificatory failure and distributive obligation that the existing literature lacks. Keywords: normative unavailability; justificatory architecture; Non-Command; Lexical Shield; agency collapse; Smax; Determinate Preference Failure; Lexical Priority Maximum; Forst; Pettit; asymmetry thesis; structural legitimacy