ok, then answer me this:
if you are so sure all the best distance runners dope, then why haven't non-africans improved their times(as a group_ much over the last 20-25 years, which is the era of EPO and new designer steroids, hgh, etc??? (look it up, very little improvement in the non-african[ie, rest of the world] records over the last 20 years) You've already proven that white cyclists have no problem cheating, then why not white runners?
Where are all the white guys running faster than Moorcroft's 13:00 ? we've only had 2 clean ones (Bauman tested positive) beat that time in a QUARTER CENTURY.
How many non-africans have beaten Barrios' former WR from nearly 20 years ago? A big fat zero.
How many non-africans have beaten Cram and Coe's prs from over 20 years ago in the 1500m ??? ONE.
Steve Jones went out in 1:01:4x and ran near 2:07-low over 20 years ago. With any sort of even pace, he would have went 2:06:30 easy. How many non-africans have beaten that time since? A couple.
CONCLUSION TIME:(drum roll please)-
Your hypothesis is that PED's work really well, and that most top runners use them. If this true, then based on my stats showing lack of significant improvement in "non-african World Bests", one of the following must be true:
1) White distance runners don't cheat, only non-white ones (ie, the africans) do
2) Good white distance runners don't cheat , only the bad ones do (with the implication that there are either no good white distance runners around to cheat, or that there are still a few around, but they just don't cheat)
I have a hard time believing either of those choices. The next possibility is:
Some part of your hypothesis is wrong, and one of the below is true:
3) Plenty of good white distance runners are still around, and plenty of them cheat, but the drugs don't work as well you think they should.
4) The drugs work, but there are not as many cheaters as you think. If there were, the "white distance WR's" would have improved more.
So which is it? Why have the "african WR's" improved so much, but not the "white WR's" ? I know that on the face of it, I am making an argument for the idea that the Africans are the big cheaters, and not the white runners. But that is not what I feel. What I feel is that while there are of course cheaters in distance running, drugs have not had as much impact on WR's as you think. I think that talent is the super-drug, and that is why the africans are so great(they have a prevalence of super-talented runners), and that is also why Ryan Hall can run 2:05 clean (because super-talented genetic freak runners pop up all over the globe occasionally. Mottram is another example).
What is your explanation for the phenomenon I have described?