CESARE CAVALLINI * BEYOND PROBABILITY; PLAUSIBILITY AS COHERENCE IN ASYMMETRIC LITIGATION

Federal pleading doctrine systematically misallocates epistemic risk. When courts credit defendants' "obvious alternative explanations" at the pleading stage, they require plaintiffs to negate defendant-controlled narratives before discovery begins-imposing the burden of factual uncertainty on the party least able to bear it. What Twombly and Iqbal designed as a threshold screen for incoherent claims has been transformed, in practice, into a mechanism for resolving contested factual questions at the moment of greatest informational asymmetry. The transformation rests on a doctrinal error. Plausibility is a test of narrative coherence, not comparative probability. A complaint satisfies Rule 8(a)(2) when its well-pleaded facts, assumed true, form an internally consistent account sufficient to establish liability if proven. Alternative explanations defeat plausibility only when they expose logical contradictions within the plaintiff's own narrative-not when they merely offer a conceivable lawful account of the defendant's conduct. Drawing on the circuit split, the Supreme Court's decision in NRA v. Vullo, and the structural pathology documented in asymmetric litigation, the Article develops and applies this coherence standard across four paradigmatic categories: civil rights, antitrust, First Amendment retaliation, and government accountability. The framework is grounded in a transnational principle of procedural legitimacy: procedure must not render substantive rights illusory by foreclosing the evidentiary means necessary to establish them. Italian constitutional jurisprudence-in particular the Constitutional Court's elaboration of the diritto alla prova and the evidentiary foundations of the 2022 reform-demonstrates that early dismissal and meaningful access to proof are reconcilable when procedural design is calibrated to informational structure. The Article anticipates and responds to three objections before concluding that the circuit split over "obvious alternative explanations" can be resolved without overruling Twombly or resurrecting Conley. The choice before the Court is not between rigorous screening and permissive access-it is between a pleading standard that operates as a disciplined threshold and one that operates, in the categories of litigation that matter most, as a merits bar imposed before the evidence is in.