But the NAIRU is not immutable. The correct implication, which Phelps repeatedly emphasized, is that governments can implement a variety of policies, particularly structural policies, to allow the economy to operate at a lower level of unemployment.
但是NAIRU并不是永久不变的。正确的政策，即菲尔普斯一再强调的，应该是政府应该实施多种政策，尤其是结构性的政策，以让经济运行在一个较低失业率的水平上。