The second explanation was that the slow recovery was part of a longer-term trend, attributable to secular stagnation or a dearth of important technological innovations. It is true that productivity growth and labor-force growth have slowed since 1975.
第二种解释是缓慢的复苏是更长期趋势的一部分，要归因于长期停滞或重要技术创新的缺乏。诚然，生产率增长和劳动力增长自1975年以来有所放缓。但是，经济仍应该可以以2011—2013年的增长率（2.1%）更强劲的水平复苏。