In the ten years prior to the 2008 financial crisis, independent central banks set an inflation target of about 2%, in order to provide economies with a price-stability “anchor." There should be no expectation that prices would be allowed to deviate, except temporarily, from the target.
在2008年金融危机前的十年中，独立央行制定的通胀目标是2%，这样做是为了为经济提供物价稳定之“锚”。应该不会有人预期价格能够偏离这一目标（除非是暂时性的）。未来价格走势的不确定性应该从商业计算中去除。