A Production Theory Perspective on Collective Choice Theory
用生产理论中的可分离性和外部性概念，统一解释了阿罗不可能定理及其变体、自由悖论等集体选择理论的重要结果，指出这些结果源于对多产出生产过程同时施加要求外部性和否认外部性的特征。
Basic production theory concepts of separability and externalities are used to provide an intuitive, unifying explanation of Arrow's original possibility theorem and later variants of it due to Sen, Wilson, Mas-Colell, and Sonnenschein, of the libertarian paradoxes of Sen and Gibbard, and of the single-profile possibility theorem of Parks. These important results in collective choice theory are shown to be the result of imposing on a multiple-output production process both externality-requiring and externality-denying characteristics. In each of these cases various consistency conditions on social preference and input-output links like citizens' sovereignty or the Pareto principle create external effects in production that interact with an externality-denying characteristic of separability to create a production process with zero marginal input productivity in certain regions of input space.