At first glance, the evidence supports the possibility that demand for advanced skills is falling. With the exceptions of the US and Germany, the wage gap between skilled and unskilled workers has been declining in all Western countries in the last 17 years.
评估第二个假说更加复杂。咋一看，证据支持对高级技能需求下降的可能性。在过去17年中，除了美国和德国，所有西方国家高技能工人和非高技能工人之间的薪酬差都有所缩小。