Which is why is said race is not a result of biological differences but at best of cultural and traditional similarity. I also said that genetic difference does exist, but it's not a locked absolute difference.
I even used height as an example of how this can be mistaken for a 'racial' trait with regard to Asians being short. A difference caused by diet not genetics.
The example was used of long distance runners earlier, seeming to forget it ignore that once you get to ultra marathons it falls over.
Why someone or a group of people are successful at a certain activity can have origins in genetics, but the vast majority of the time it's also down to social and economic factors as well.
To suggest that black runners are better simply because they are black is both a massive oversimplification and avoids the fact that they still have to train as hard as anyone else. It's more arguable that what black runners have in common is poverty or a low socio-economic upbringing. Sport is one of the few routes out of which, and as such the motivation for some to succeed is higher.
You then get the opposite with sports that are expensive to partake in, or do you think that white people dominate Motorsport because we are racially better at it?
This has nothing at all to do with being PC and I have not ignored genetics as a factor in part (but they are not locked or as universal as racial theory would suggest), but has everything to with science (both pure and social).
Do you not find it odd that this is something we only do with humans and no other animal on the planet? Oh and if anyone wants to mention different animal breeds you first need to show me a wild Pomeranian and then realise they are a result of man made selective breeding, and what happens if man stops getting involved.
Keep in mind that I am not just pulling this out of my ass, but paraphrasing the work of the Human Genome Institute.
"Genetic methods do not support the classification of humans into discrete races, [and] racial assumptions are not good biological guideposts. Races are not genetically homogenous and lack clear-cut genetic boundaries. And because of this, using race as a proxy to make clinical predictions is about probability."
http://m.huffpost.com/us/entry/us_56b8db83e4b04f9b57da89ed/amp