Sorry, but I can't agree with experts who studied doping but never studied training. I KNOW THE BOOST OF ONE MINUTE OVER 10000m IS A TOTAL BULLSHIT, of course when the training of the athlete is as top level, and has carried out with continuity for long time.
I respect dr. Schumacher, but all his analysis don't include the effects of training, in altitude, for long time, at the max level used by the best runners (CLEAN).
I don't deny that many top athletes used EPO. I deny that they ran fast BECAUSE of EPO.
Many explain that, taking EPO, it's possible to better recover training, moving, for that reason, to higher volume and intensity. This means that everybody (scientists and researchers included) agree that the DIRECT REASON for the improvement of doped athletes is THE IMPROVEMENT OF THEIR TRAINING, something before were not able to do.
But this is exactly the point : there are athletes able to do the same level of training of doped athletes, IN CLEAN WAY, because they believed in themselves from the beginning of their career, and had the stimulus to look at strong and big continuous increase in their training (both volume and intensity, because the final goal for any improvement is the INCREASE OF THE VOLUME OF THE SPECIFIC INTENSITY).
This behavior depends on two factors, mainly :
a) The character of the athlete, and his ethic. I coached athletes who REFUSED to take any medicine (sometimes also when sick) and any supplement, because their main stimulus was to show TO THEMSELVES that could be the best in the World, because their talent but especially their motivation and their self-confidence.
b) The ambience where they trained. If they have a coach who is not only somebody giving programs and using the watch, but is a TEACHER and an EDUCATOR, too, they KNOW that is possible running at the personal best in clean way, and the general behavior of the group is to train clean.
On the opposite, if you train in an ambience where some of the best uses doping, the general behavior goes in that direction (for example, the area of Kapsabet in Kenya produces almost the 70% of the athletes banned till now).
When you write : "Put I and II together, and you see how next to impossible it is to run a world record clean", not only I can't agree, but I consider this a big lie and a total bullshit, because, how I already wrote, I KNOW OF CURRENT WR
COMPLETELY CLEAN, AND NOT ONLY FROM SOME MY ATHLETE.
We know that with EPO we can increase the transport of Oxygen. We know that the speed in endurance is based, under the organic point of view, on the transport of Oxygen. These two points produce a logic hypothesis that, with EPO, because you can transport more Oxygen, you can run faster.
But some honest coach of top athletes knows that this is not completely true, because not always, transporting more Oxygen, athletes can run faster.
Which is the limiting factor in this direction ? Because the increase in O2 transport is a FACT, the improvement of aerobic level if there is s better O2 transport is also a FACT, but, believe me, in many cases we have also the FACT that, in spite of the two previous effects, SOME ATHLETE CAN'T RUN FASTER.
So, in our physiology there is some limiting factor that doesn't allow athletes already with great and continuous training to run faster when their Hct and their Hb continue to raise. But NEVER this situation was studied by some scientist, everybody looking at doping only, and not at some more deep investigation about the effects of training.