it’s pretty simple to explain that if 5-10 guys are of similar grades that the one filling a hole, or harder to get elsewhere would be selected. You have still gone “BPA” generally speaking.
Or if you have a big hole to fill you move to where that position has value instead of taking them way out of line
it’s not crazy split brain bi polar logic. I’d be annoyed if you were asking too many questions when it’s that simple