Usher wrote: Jos Hermans is a shady character, and the best Ethiopians seem to all have him for their manager. That is a fact.
What's the fact? That Jos Hermans is a shady character? I imagine he'd disagree, so that can't be a fact. That
all the best Ethiopians "seem" to have him for their manager? That may or may not be true, but it's irrelevant.
I grew up as a competitive swimmer on the fringes of national class in the 70s. I suppose you would have said the same thing to me when we weren't keeping up with those hard working East Germans.
You can't seriously compare that world with today's. The Eastern Bloc countries were practically sealed off from the West. Today unannounced drug tests are performed all over the world, even China. It's become much harder to get away with systematic doping, as recent events have shown.
And by the way, at least do your homework before speculating about an athlete's integrity. At least 2 others immediately pointed out why Geb had a bit of a slump in his performances for a couple of years. Look around a bit before you even suggest publicly that someone is cheating.