There's one thing I don't get though. Being biased often means valuing something that is common among those you favor, but rare among those you don't. So even i

There's one thing I don't get though. Being biased often means valuing something that is common among those you favor, but rare among those you don't. So even if one group outperforms the other, why would that in a practical scenario prove that your next candidate should be of that group? It seems entirely possible that if your program is "narrow" enough you could exhaust the pool of more successful candidates from a minority group. Of course this would be a lot more plausible if you're biased.