需求:不可告人

Business & Finance, Economics, Theory of Economics
Cover of the book 需求:不可告人 by 蔡克, Hak Choi
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Author: 蔡克 ISBN: 1230002243375
Publisher: Hak Choi Publication: March 30, 2018
Imprint: Language: Chinese
Author: 蔡克
ISBN: 1230002243375
Publisher: Hak Choi
Publication: March 30, 2018
Imprint:
Language: Chinese

經濟學家一直把供需模型掛在嘴巴。如他們說有需求定律,即價格與數量的反比關係,但如何求得這關係呢?有人以效用或無異曲線來求得,我証明同樣的基礎亦可求得正的關係,那正關係還叫需求嗎?有一次我在跟一位期刋編輯爭論時,提出這樣的反駁,他就很生氣的說,「那我隨便劃一條負斜率的線,行嗎?」這就是經濟學家做學問的態度!路邊子 (Joan Robinson) 叫這種態度做馬虎了事 (Sloppy)。本書旨在揪出這些馬虎了事的經濟學家,及他們牽強地劃出需求的後果。

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經濟學家一直把供需模型掛在嘴巴。如他們說有需求定律,即價格與數量的反比關係,但如何求得這關係呢?有人以效用或無異曲線來求得,我証明同樣的基礎亦可求得正的關係,那正關係還叫需求嗎?有一次我在跟一位期刋編輯爭論時,提出這樣的反駁,他就很生氣的說,「那我隨便劃一條負斜率的線,行嗎?」這就是經濟學家做學問的態度!路邊子 (Joan Robinson) 叫這種態度做馬虎了事 (Sloppy)。本書旨在揪出這些馬虎了事的經濟學家,及他們牽強地劃出需求的後果。

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