We study fairness in economies where humans consume one private good and one public good representing the welfare of other species. We show that a social evaluator cannot be egalitarian with respect to humans while always respecting humans’ unanimous preferences. One solution is to respect unanimous preferences only when doing so does not lead to a decrease in the welfare of other species. Social preferences satisfying these properties reveal surprising connections between concerns for other species, egalitarianism among humans, and unanimity: the latter two imply a form of dictatorship from humans with the strongest preference for the welfare of other species. (JEL D11, D63, H41)

中文翻译：

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公平的社会秩序、平等主义和动物福利

我们研究了人类消费一种私人物品和一种代表其他物种福利的公共物品的经济中的公平性。我们表明，社会评价者不能在尊重人类一致偏好的同时对人类平等。一种解决方案是仅在不会导致其他物种福利减少的情况下尊重一致偏好。满足这些属性的社会偏好揭示了对其他物种的关注、人类之间的平等主义和一致意见之间令人惊讶的联系：后两者意味着人类独裁的一种形式，对其他物种的福利有着最强烈的偏好。(JEL D11, D63, H41)