根据定义，几乎大多数人（不包括极少数心理异常者外）只有以这种（自私的）方式行为才是效用最大化。

Virtually by definition, most people (excluding a handful of odd psychological outliers) a person is only going to act in such a way is utility maximizing.

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理性消费就是指消费者在消费能力允许的条件下，按照追求效用最大化原则进行的消费。

Rational consumption means that consumers in the consumption capacity of permit conditions, in accordance with the principle of utility maximization of consumer pursuit.

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本文主要是研究如何合理地安排消费者的顺序，使得评价的社会效用最大化。

This paper mainly studies how to arrange consumers' order to maximum the social utility of evaluations.

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