All of this implies that economic policymakers require an enormous dose of humility, openness to various alternatives (including the possibility that they might be wrong), and a willingness to experiment. This does not mean that our economic knowledge cannot guide us, only that what works in theory – or worked in the past or elsewhere – should be prescribed with an appropriate degree of self-doubt.
所有这些意味着经济决策者需要高度的谦卑，对各种替代方案持开放态度（包括它们出错的可能性），并愿意进行试验。这并不意味着我们的经济学知识无法提供指导，这只是在说，理论上可行的政策——或在过去或他国有效的政策——在实施时应该经过适当的自我怀疑。