Impartiality is very important when hiring skilled workers. If your hiring process is not impartial, then it's introducing undesirable bias into the hiring deci

Impartiality is very important when hiring skilled workers. If your hiring process is not impartial, then it's introducing undesirable bias into the hiring decision. The classic example is sexism in orchestras. Orchestra interviews used to consist of the candidate sitting on a stage and performing their piece for a panel of judges. The gender ratio of performers was terribly skewed, even worse than the software development field is today. Orchestra managers excused this by saying that women were simply not as good -- after all, the judges scores don't lie! But a funny thing happens if you put the performers behind a screen. Suddenly, all the factors of their gender and race and grooming go away, and new performers start being a lot more diverse. There actually was a bias, a serious one, and it caused orchestras to lose who knows how many excellent candidates. The current state of the art for programming interviews at big companies is to have the candidate solve actual programming problems, including whiteboard coding. It's not practical to put the candidate behind a screen or modulate their voice, so splitting up the tasks of "interview candidate" and "review interview feedback" is the best that Google has figured out.