V2EX public-good

Public Good

释义 Definition

公共品 / 公共物品(经济学):指具有非排他性(难以或不应将他人排除在使用之外)和非竞争性(一个人使用不会明显减少他人可用量)的产品或服务。常见例子包括国防、路灯、清洁空气等。日常语境中也可泛指“公共利益”(但这是另一种更宽泛的用法)。

发音 Pronunciation (IPA)

/pblk d/

例句 Examples

Street lighting is a public good.
路灯照明是一种公共品。

Because clean air is a public good, governments often regulate pollution to prevent businesses from shifting costs onto society.
由于清洁空气是一种公共品,政府常常通过污染监管来防止企业把成本转嫁给社会。

词源 Etymology

public 来自拉丁语 publicus(“公共的、属于人民的”),good 在这里指“物品/商品/利益”。“public good”作为一个固定术语在经济学中用于讨论市场为何可能无法有效提供某些物品(即“市场失灵”),因此需要公共部门供给或协调。

相关词 Related Words

文学与经典作品 Literary Works

  • Adam Smith, The Wealth of Nations(《国富论》)
  • John Stuart Mill, On Liberty(《论自由》)
  • Paul A. Samuelson, “The Pure Theory of Public Expenditure”(提出并系统化公共品理论的重要论文,常见于公共经济学经典阅读)
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