[foldr]

>There may be many reasons why a white persons process can take less time than someone black, when if he is naive born

Obviously there can be reasons in specific cases, but there should be no reason why it takes longer in general. At least, no reason that I can see. What are you thinking of?

It is no doubt overly simplistic to assume conscious racism, but as this thread demonstrates, Americans who are not KKK racists nonetheless have a lot of subconscious attitudes regarding race that can have an influence.