In retail, for example, Walmart and Amazon are prime examples of new technology driving down workers’ wages. Because computer programs and humans are close substitutes for such jobs, and given the predictable improvement in computing power, there seems to be no technical obstacle to the redundancy of workers across much of the service economy.
比如，零售业的沃尔玛和亚马逊便是新技术拉低工人工资的显例。对于这类工作，计算机程序和人之间具有高度替代性，并且计算能力的改善是意料中事，因此整个服务经济出现工人过剩似乎不存在技术障碍。