Automation, for example, seems to have spurred an unexpectedly rapid decline in routine white- and blue-collar jobs. This has resulted in stagnating median incomes and rising income inequality, both of which constrain the private-consumption component of aggregate demand.
与此同时，科技和市场力量使的就业呈现两极分化，中等收入群体每况愈下。比如，自动化刺激了常规白领和蓝领岗位出人意料的迅速减少。这导致了中位收入停滞不前和收入不平等性的加剧，而这两者都制约了总需求中的私人消费因素。