Technological progress has also been skill-biased: it has increased the relative demand for workers with the human capital to fill occupations that involve cognitive and abstract tasks, while eliminating middle-skill routine occupations. It has also been a major factor behind the emergence of large and growing differences in the wages of workers with a college education or higher and those of workers with lower levels of educational attainment.
科技进步同时也是基于一定技能的：一方面对拥有特定技能的劳动者的需求相对增加，让他们从事与认知和抽象理论相关的工作，同时消灭那些中等技术的常规岗位。这同时也是导致拥有高级文凭劳动者和低素质劳动者工资水平日趋分化拉大背后的主要因素