Resumen de Cost-benefit analysis: : a decision-support tool or a venue for contesting ecosystem knowledge?
Managing ecosystems for multiple benefits and stakeholders is a formidable challenge requiring diverse knowledge to be discovered, transmitted, and aggregated. Cost-benefit analysis (CBA) is advocated as a theoretically grounded decision-support tool, but in practice it frequently appears to exert little influence. To understand this puzzle, I consider ecosystem knowledge and CBA from both the demand and supply sides. I argue that all ecosystem knowledge is contestable, which restricts the influence of technocratic tools like CBA. On the demand side, democratic mechanisms shape decision makers� motivations and incentives, but also provide a substitute for technocratic evidence. Supply-side factors limiting the influence of CBA include the scarcity of decision-pertinent evidence and the uncertain meaning and usefulness of CBA. Demand-side factors are resistant to change; but taking account of them, I suggest some supply-side reforms, arguing that CBA is best regarded not as a tool but as a venue where ecosystem knowledge is aggregated and contested.
