that I cannot understand is that some very large, very profitable companies openly endorse this book. (Book jacket flap and website)
They must not understand that the subjectivity of this metheod makes it impossible for a company to cull out the losers. They also are implying that their company, prior to Topgrading has been operating with a very high percentage of its staff comprised of incompetents.
The author of Topgrading has made an industry of this, I think, flawed approach to staff improvement. This is far more destructive than most of the management "toys dujour" that I've seen in the past, in that it encourages canning of people for all sorts of wrong-headed, possibly illegal reasons.
There must be a preponderance of naive, intellectually and ethically challenged people in management and HR. Or worse yet, that no matter how bad of a clusterfuque their hiring practices are, the performance of the organization is unaffected. Staffing decisions are irrelevant???