How to rank employees? Just to mention and example: in the last several years Yahoo’s Quarterly Performance Review has extensively been discussed not only in the business/leadership literature, but in the popular magazines, too. It is very difficult or impossible to find objective measures to promote gifted and lay off inappropriate employees. Still, we know that employees are different in terms of their ability, performance, so we should understand the challenge to rate and rank people. The link is eighteen months old, still it is worth to read.