L3 有关 futures or options hedging问题 direction, currency, opinion, change, option

dkishore1

在 原版书V5 P 310中第三段中, 如果not have a clear view of the direction of change, 用option; 第四段中, 如果 direction
of a currency movement is clearly forecasted, 用currency futures.
但是在V4 P148习题3中, 如果no opinion 则用futures;

请问老师,这两个是否矛盾, 能够进一步解释? 谢谢