Argumentum is a platform that combines argumentation theory, behavioral economics, and common sense to facilitate online discussion and debate. It is designed around the concept of argument mapping, using propositions as the elemental unit of discussion. Unlike other structured argument systems, Argumentum allows users to engage in stimulating debate without requiring a deep understanding of argumentation theory. Users can break down arguments and attack individual points, preventing chaos and disorder while maintaining the flow and passion of communication. Argumentum is integrated with popular social media platforms and email, making it easy for new users to adopt argument structuring without changing their habits.