老师好,请问一下考点2:approaches to economic forecasting中对用户领先指标及indicator,为什么说a flattening yield curve would be indicative of a wekening economy? 利率曲线更平,short term rates increase, 不应该是经济较好时的restrictive policy导致的吗?再phases of 经济周期里也是,early expansion和late expansion都是yield curve flatten,但经济并不是weak的?