第251页对于mean-reverting markets，怎么去理解type i og ii error? 句子贴在下面了
The extent to which markets are mean- reverting also has a bearing on the cost of Type I and Type II errors. If performance is mean reverting, firing a poor performer (or hiring a strong performer) only to see a reversion in performance results is a Type I error. A Type II error would be not trimming strong performers and avoiding hiring managers with weaker short- term track records, which can be costly
