Forced ranking would be much more tolerable without the corruption.
Id--ts with sponsors get top ranking.
HR moves up minorities after ranking. HR Manager told me this after one of my direct reports ended up the highest of my group after rank session put him in middle.
Age discrimination leads to top performers over 60 to be placed at bottom, below all the young people that they outperformed.
VPs intimidate rank meeting attendees such that nobody will argue against the placement of their sponsored chosen ones.