Exploring the connection between cultural diversity, relativism, and moral truth, the speakers discuss the existence of radically different moral practices across cultures and raise questions about their fundamentality and objectivity. They examine examples such as infanticide, genital mutilation, burka-wearing, and cannibalism, while exploring the possibility of agreement in the moral domain through logical reasoning and the resolution of disagreements. The chapter also addresses the misconception that the absence of objective moral truth implies the equality of all opinions.