产业政策已被证明是一种寿命短暂的观念。然而,产业政策辩论提出了两个有关经济变革的中心问题。为什么较老的产业在生产和就业增长方面显示出停滞的趋势?产业的老化是否已经侵蚀了美国的竞争力,以致使美国在某种意义上“正在经济竞赛中失利”?为了回答这两个问题,本文回顾一下经济学家们对于产业老化、经济成熟以及市场推动复兴问题都是 Industrial policy has proven to be a short-lived concept. However, the industrial policy debate raises two central issues concerning economic change. Why is the older industry showing a stagnant trend in production and employment growth? Has the aging industry eroded the competitiveness of the United States so that the United States, in a sense, “is losing its economy”? To answer this Two questions, this article reviews the economists for the aging of the industry, the economy is ripe and the market to promote the revival of both