In order to assess the proportionality of Victor’s defensive action, we cannot simply compare the magnitude of the threat Victor faces with the total amount of harm that Victor will cause. Proportionality also crucially depends on how the harm is allocated between Andy and Billy. As McMahan has influentially proposed, the permissibility of Victor’s use of force depends on two distinct proportionality assessments. Narrow proportionality assesses harms imposed on persons who, like Andy, are liable to some harm. The idea is that persons are not liable to harm simpliciter, but to a certain amount of harm. Narrow proportionality thus considers the upper limit on an individual’s forfeiture of their right against harm. By contrast, wide proportionality assesses harms imposed on non-liable persons like Billy. Here, the focus is on whether the good achieved by defense is sufficient to justify overriding an individual’s right against harm. Wide proportionality thus sets an upper limit to a lesser-evil justification for harm (McMahan 2009: 19–20).