Inequality is a hot topic right now. The reaction to Thomas Piketty’s Capital in the Twenty-First Century shows the rising tide of anxiety. But Mr Piketty devoted almost no attention to why inequality matters or whether the cost of reducing it might outweigh any likely benefits. This lacuna needs to be filled.
不平等是当前的热门话题。托马斯•皮凯蒂(Thomas Piketty)的著作《21世纪的资本》(Capital in the Twenty-First Century)引起的反响，显示出人们愈发焦虑。但皮凯蒂对两个问题几乎没有关注：为什么不平等事关重大？减少不平等的代价是否会超过潜在的收益？这一空白有待填补。
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