Yet you admit that you don't understand genetics... so how can you hope to make a reasonable "intelligent analysis" let alone unbiased observations?
You don't need a detailed understanding of genetics to do this; modern genetics can't help much on this question. First you note differences and intelligently consider how environment can effect those differences and then form an opinion; true you won't know everything precisely but it's the best method we have for understanding this question.
But your example is flawed because of this. It ignores reality to set up a false dichotomy.
 
It shows your argument is based on a false dichotomy. You can't argue that A and D are significantly different while ignoring B and C between them.
Not true. I didn't ignore B and C; I said they would likely be intermediary. And, even so, what would be invalid about comparing A and D?
Sure it does... and mutations make each of us different from one another. Which is part of why one child can be a great athlete and their sibling can be a couch potato or one can have cancer but the other is healthy as an ox.... but it isn't the whole story and simply ascribing it to genetics is flawed.
Once again I agree. I ascribe things to genetics AND environment.
No but it should make you question which one is more important to the particular trait.
I certainly question these things. Some things have a higher genetic influence while other things may have a higher environmental influence. It's complex as I've been saying.
In terms of athletics all the evidence shows that environment is more important than heredity.
No way is that believable. 'ALL evidence'? Even in sprinting??
I can point out that you are here agreeing with me that genetics is part of the factor and now we would just have to estimate the percentage of each of the two factors.
One of the most important environmental factors is development in the womb. From the mothers diet to the temperature/time of year. (example: winter babies are bigger than summer babies, which in turn has other effects)
Once again, environment is a factor as we both agree.
I'm arguing that in subjective cases like "athletic ability" or "intelligence" that environment is more important than heredity. Athletes and geniuses are essentially made not born.
The very top athletes and geniuses are likely to have both good genetics and good environment on their side.
So, you are here agreeing that both genetics and environment are factors, so how can you also stand by your argument that ethnic group genetic differences are meaningless?
I'm not saying it's meaningless... just that it's all but impossible to tie a subjective measure like "athletic ability" to hereditary factors.
Now can you tie heredity to specific genetic disorders... yes, absolutely. But that is a very different subject.
It's impossible to PRECISELY tie a trait/ability to genetics. But it's still correct to say genetics is definately part of the equation here.
wa:do