科文和卡普兰不应该仅仅依靠失业率一个数字；他们还应该纳入就业-人口比和其他他们一致认为具有诊断价值的指标。
Cowen and Caplan should not have relied on the unemployment rate alone; they should have included the employment-to-population ratio and other metrics they agreed would have diagnostic value.