Bottom in example sentence
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.