Existence Values in Benefit-Cost Analysis and Damage Assessment
论证不应先验排除对冷门资源的存在价值，并指出在公共选择评估中需谨慎解释存在价值，但在损害评估中则无此顾虑，同时讨论了加总问题、高单位价值及资源存在的产权问题。
Existence values for obscure resources should not be ruled out a priori because consumers have limited time and resources for information gathering. Furthermore, to the extent that environmental "good things" are highly substitutable, existence values must be cautiously interpreted when evaluating public choice alternatives, but similar concerns do not arise in damage assessments. Issues associated with adding up existence values across resources, high per unit values, and property rights in the existence of resources are also addressed.