Beliefs about origins, life after death, and rituals that activate supernatural processes to help people navigate life, despite being almost certainly incorrect, are common in developing countries. This column examines the role of ‘magical’ beliefs in warfare in the context of the Democratic Republic of the Congo. Belief in a spell that offers protection from bullets helped villagers liberate their village, and others in the area, from militias, providing an example of how the ‘right’ amount of ‘wrong’ beliefs can achieve a socially efficient outcome.