Hector Martin

Do you mean companies that hire *exclusively* from SO? Balance is important but no candidate pool is bias-free.

No, I didn't.

How does that work then? I imagine companies should be judged by the totality of their hiring pool, not a single component.

Why include a biased component?

Because no component is unbiased, and some may be good indicators for other reasons. You can compensate/counter the bias.

I literally think companies shouldn't spend any effort recruiting white men. White male candidates fall out of the sky.

I doubt cos would hire from SO *with the intent of* hiring white men. Presumably it's a good indicator of something else.