发达经济体出了什么问题?

美国剑桥—发达经济体目前的低增长是长期衰落的延续,还是反映了深度系统性金融危机后的常态?更重要的是,为了提振经济增长速度,我们需要对这个问题做出确定的回答吗?

在最近的国际货币基金组织(IMF)会议上,前美国财政部长萨默斯(Lawrence Summers)指出,现今的增长萎靡在全球金融危机之前就埋下了祸根。萨默斯特别强调了需要进行更多的基础设施投资,大部分经济学家都十分支持这一看法,特别是真正的生产性投资。

显然也有人担心长期衰落,尽管大部分强调的是供给面而不是需求面。比如,经济学家萨克斯(Jeffrey Sachs)指出,美国经济需要面临太多的可持续增长的结构性障碍,包括离岸化、技能错配和基础设施陈旧。

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