The Pudding There’s a line in the book of Ruth that most people skip past. Boaz tells his workers to leave grain at the corners of the field. Not as charity. Not as a handout. As a system — a deliberate architectural decision that anyone who shows up and works can eat. Liana Banyan’s entire contribution model is built on that principle. Leave the corners. But define them precisely enough that the system actually works. ...
Abstract Public goods theory has long identified free-riding as the central obstacle to voluntary collective provision: rational actors consume shared resources without contributing, leading to under-provision relative to social optimum (Olson, 1965; Ostrom, 1990). Platform economies amplify this problem by enabling consumption at scale while diffusing contribution incentives. This paper proposes a mechanism design solution rooted in biblical agricultural economics: the Boaz Principle, which mandates that platform producers “leave the corners of their fields” through structured contributions that fund public goods, newcomer access, and network resilience. Unlike charity—which depends on donor discretion and creates recipient dependency—or taxation—which extracts involuntarily and often inefficiently—Corner Contributions are structurally embedded in platform transactions, automatically generated, transparently allocated, and tied to governance benefits that incentivize higher generosity. We formalize four Corner Contribution types (Campaign 10%, Product 5–15%, Service 1:10 ratio, Knowledge always free), introduce a three-tier generosity classification (Bronze, Silver, Gold) with governance weight multipliers, and demonstrate through mechanism design analysis that gamified generosity produces anti-fragile economic networks—networks that grow stronger under stress because their public goods provisioning increases with transaction volume rather than depending on discretionary philanthropy. The Boaz Principle represents a third institutional form between market allocation and state redistribution: structural generosity encoded in platform architecture, where leaving the corners is not sacrifice but strategy. ...