I'm just going to let Godwins/Pharmstrong go for now...
Ok. some fair stuff here.
The reality is that the IAAF have long decided not to revise Koch's record, though it's clear how serious GDR doping was - just check out the lunacy of that world record
here -it makes Armstrong and Pantani look positively sluggish.
It's a pretty good answer to those who think only cycling has questions to answer! Seriously - hitting 49.5 is now absolutely world class - only Richards ross did it this last Games - Koch hit 47.6 slowing up
as for Flo Jo, doped as she was, and by god she was, her insane WR is actually more to do with wacky wind gauges - some reckon she may acutally have had a wind as friendly as +4m.s - on top of the dope.
True. but the Men's 100m record, the blue riband has been under contant attack right up until Bolt - admittedly, mostly by dopers, but not always.
Actually, 100m gives a good example of something else- ask anybody who is really into track and field to name a truly world class truly clean 100m sprinter pre bolt, and you will get one name repeated over and over - Ato Bolden, a 9.80 runner who hated doping with a visceral passion (evidence includes a private letter that bolden wrote to his coach, and was leaked by another one of his coaches athletes, where Bolden absolutely goes through his coach for looking the other way to allow boldon's friend Maurice Green to dope - the passion and anger is highly 'lemond-esque').
Now his times, and his nearest modern equivalent, Tyson Gay's times, on their own are completely red flag territory, historically, on doping. and while the jury is very much out on the jamaicans, and we know a series of others doped to the heavens, nobody in that sport has a bad word for boldon or Gay when it comes to drugs - unlike Blake, Greene, and the obvious ones like Gatlin and Chambers)
As for Coe, no evidence he doped. Plenty of evidence that his dragon of a father was possibly sports first modern sports scientist - at least west of the iron curtain.
But to come back to my early point, sometimes these things just aren't linear. But progress still takes place, when taken in the round.