It has more to do with changing supply and demand for skill, the race between education and technology, globalization, probably more unequal access to skills in the U.S., where you have very good, very top universities but where the bottom part of the educational system is not as good, so very unequal access to skills, and also an unprecedented rise of top managerial compensation of the United States, which is difficult to account for just on the basis of education.
而是更多的跟技能的供给的改变有关， 在美国，教育和科技上的竞赛、 全球化的因素，可能导致 更多的在技能获取方面的 不平等性， 在美国有非常好的，顶尖的大学 但是教育系统中的下层 就不是那么好了， 所以可以看到技能获取处于非常不平等的状态， 而且在美国管理层薪酬 空前高涨， 这个很难说是仅仅基于教育所造成的