So are you arguing that Ethiopians are still fast, because of no OOC testing, after you said Africans are slowing down?
You, and others, seem to place a great deal of faith on the lack of OOC testing -- this is essentially a concession that you don't have data or knowledge.
Once again, in the 1990s, there was no EPO testing at all, and in the 2000s there was virtually no OOC (blood) testing anywhere, until the ABP after 2009.
The EPO testing landscape was equal for everyone -- Kenyans, Ethiopians, Moroccans, Spanish, Europeans, Americans, alike -- for these two decades, and yet the East Africans were able to separate themselves from the rest of the world, a separation that has remained fairly constant for 25 years, despite all the improvements in EPO testing, and the uneven lack of OOC testing.
Africans aren't setting records like Geb and Komen in the 1990s and like El G and Bekele in the 2000s, but when you look a little deeper, say the number of top performances per decade, the are still a significant number of fast performances:
In the 1500m, 14 of the top 50 all time performances are from this decade (which is not yet finished).
In the 5000m, 13 of the top 50 are from this decade.
In the 10000m, 13 of the top 50 are from this decade.
In the marathon, 46 out of the top 50 are from this decade.
Africans have slowed down on the track compared to 90's especially Kenyans. Ethiopia still has no virtually no testing out of competition.
Read the last line again.
As Kiprop admitted athletes in Kenya still get advance notice of testing and routinely pay fines to avoid being banned.
He was on the slide and didn't pay them enough.