 Constitutive luck. Constitutive luck is luck in who one is, or in the traits and dispositions that one has. Since our genes, care-givers, peers, and other environmental influences all contribute to making us who we are (and since we have no control over these) it seems that who we are is at least largely a matter of luck. Since how we act is partly a function of who we are, the existence of constitutive luck entails that what actions we perform depends on luck, too. For example, if we correctly blame someone for being cowardly or self-righteous or selfish, when his being so depends on factors beyond his control, then we have a case of constitutive moral luck. Further, if a person acts on one of these very character traits over which he lacks control by, say, running away instead of helping to save his child, and we correctly blame him for so acting, then we also have a case of constitutive moral luck. Thus, since both actions and agents are objects of moral assessment, constitutive moral luck undermines the Control Principle when it comes to the assessment of both actions and agents.