"To deny the predictive validity of race at this level is nonscientific and unrealistic"

This quote by J. Philippe Rushton is describing the anticipating legitimacy of race in regards to knowledge. Rushton is suggesting that to deny the predictive credibility of race in regards to intelligence is not based on scientific evidence and is not reasonable. He is suggesting that race does have a result on knowledge, and that it is essential to acknowledge this in order to properly examine intelligence. Rushton is recommending that it is very important to take into account the predictive legitimacy of race when evaluating knowledge, as it can offer useful insight into the person's capacity. He is also suggesting that to refute the predictive validity of race is to ignore the reality of the situation, and also to not take into consideration the potential of the individual.