This is worth re-posting. ” I am not trying to bully anyone with terminology. If you don't understand something, you should ask. However, I'm gratified that you are finally willing to admit that you don't know something. Now that's progress!! I'm not sure I understand your objections. The genetic differences within human populations are real. I have never denied this. What I'm saying is that these genetic differences don't group together with regards to the hypothetical races. What I'm saying is that to break up, disjoin, fracture real biological and evolutionary groupings based on relatedness merely to force individuals into arbitrary groups based on skin color (or whatever 'racial' characteristics you choose) is not scientifically based, but based on social or cultural reasons. Which means that human races are not biological groupings, unlike races in other biological organisms, but are social and cultural groupings. The reason some biologists get so adamant about this, is that it's dishonest. Humans are the only organism in which race is mis-used like this, and it's mis-used to give itself biological credence.