For example, the Bank of England is committed to achieve 2% inflation “in the medium term.” Annual inflation has not been 2% at any time in the last six years, but it is possible that the BoE’s commitment has had some effect in lowering interest rates.
有一个学派认为，承诺，而不是成就，让政策拥有信誉。比如，英格兰银行承诺“在中期”实现2%的通胀目标。而在过去六年里，年通胀率从未达到过2%，但有可能英格兰银行的承诺已经产生了一些降低利率的效果。