自世纪之交以来，美国的教育入学率只是略有增加，因此，我们应该预期薪酬差距会显著增加，就像20世纪八九十年代那样。
Because educational attainment has been advancing only modestly in the US since the turn of the century, we would expect the wage gap to be rising steeply, as it did in the 1980s and 1990s.