Stack ranking and the "keepers" test are not the same things. There is no stack ranking at Netflix. i.e. they don't let go of the bottom x percent. In practice

Stack ranking and the "keepers" test are not the same things. There is no stack ranking at Netflix. i.e. they don't let go of the bottom x percent. In practice every company does a version of the "keepers" test. The difference is where the bar is for keeping. At the very least companies will fire people that are just plain incompetent. That is deciding the keep line is basic competence.