The field of policy studies has always been interested in analyzing and improving the sets of policy tools adopted by governments to correct policy problems, and better understanding and improving processes of policy analysis and policy formulation in order to do so. Past studies have helped clarify the role of historical processes, policy capacities and design intentions in affecting policy formulation processes, and more recently in understanding how the bundling of multiple policy elements together to meet policy goals can be better understood and done. While this work has progressed, however, the discussion of what goals policy designs should serve remains disjointed. Here it is argued that a central goal, in fact, 'the' central goal, of policy design is effectiveness. Effectiveness serves as the basic goal of any design, upon which is built other goals such as efficiency or equity.