[Thinking to themselves:] "Is this serf really the right kind of drone, the type who will fit neatly--much like an unthinking cog--into our organizational machinery?"
Maybe he accidentally let it slip that he thought the South should have won and Robert E. Lee had some good ideas.
Yeah, they do weed out racists and misogynists and people who in general have a problem with minorities even if they can traverse a graph like a champ, but as far as I know the main reason why someone is rejected after passing the online test and phone screening is having serious problems with their personality and soft skills that, as a whole, render the candidate unable to improve to an acceptable level and thus are unsalvageable.
Maybe he accidentally let it slip that he thought the South should have won and Robert E. Lee had some good ideas.