即使美国十年期债券利率在过去几个月内已经上涨了0.5 % ， 但这种悲观情绪无疑是实际（排除通胀因素后）利率仍然极低的原因之一。
Such pessimism is surely one of the reasons why real (inflation-adjusted) interest rates remain extremely low, even if the bellwether US ten-year bond rate has ticked up half a percentage point in the last few months.