I just don't buy that it does. We're not picking two random people off the street here. These are people who have passed all the filters needed to have their resumes sitting in front of you. From education, to experience, to HR, to phone screen, etc. If, at this point, the two candidates still look identical, I don't think race gives you any meaningful signal. The black candidate has already proven that he has risen above any disadvantages he might have statistically faced. In fact, this should even be a plus in his column because he had the determination (or raw intelligence) to overcome his disadvantaged lot in life and be sitting in front of you, on equal footing with a white candidate who (statistically) had many advantages given to him.