There have been many shocks to the US economy over the past couple of generations, and many factors have added to or subtracted from economic growth. But it is not obvious that the US economy today would be 6% less productive if it had had the finance-insurance system of 1950 rather than the one that prevailed during the past 20 years.
过去几代人经历了多次对美国经济的冲击，诸多因素都领经济增长雪上加霜。但没有明显的证据表明，如果金融-保险系统维持1950年的水平，而没有像过去20年那样出现爆发式增长，那么今天美国经济的生产率会比现在低6%。