> Let's assume tall people and short people are equally good at cracking eggs. Mathematically, if 90% of your egg-crackers are short, you've already hired under

> Let's assume tall people and short people are equally good at cracking eggs. Mathematically, if 90% of your egg-crackers are short, you've already hired under-performing egg-crackers. In fact, this depends on the underlying population sizes of tall vs. short people, so this is a faulty argument. More germane to the situation, however, is your initial assumption, whose analogue is dubious. So much so, in fact, that it is taboo to even allude to it. cf. pg's "What you can't say".