外部性的問題 - 經濟

By Skylar Davis
at 2007-06-23T15:50
at 2007-06-23T15:50
Table of Contents
以下敘述何者不正確?
(A)二手煙對其他人會產生負面影響, 故其具有負的外部性
(B)香水對其他人會產生正面影響, 故其具有正的外部性
(C)宗教與言論自由隱含著一個人對其他人的影響, 故亦具外部性
(D)當外部性的情況出現時, 政府不一定要介入
ans: (B)
請問選(B)的原因, 是因為有可能擦到劣牌香水, 產生負的外部性嗎? XD
不然有些懂的如何擦香水的人, 除了使自己心情好, 別人聞到了,也會
心情好, 也算產生正的外部性吧?
另外,再請教, 貨幣供給 是"存量" 還是 "流量"的概念?
感謝.
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經濟
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