It is cowardly to avoid scientific truth over politics. And avoiding the race differences question is cowardly and it isnt racist to find the answer,what is done with the information is what is important. Science hasnt answered this question but the answer is obvious in alot of cases and there is a bell curve across the spectrum. Science progresses when you do the answer the questions people dont want to hear and that is historical fact! Otherwise would still be living on a flat earth  where the entire universe revolves around us. Those people who answered those questions were persecuted and the same thing is being perpetrated now.