But, I'd like to point out that the main thing we should have learned from the Armstrong era is that "was Chris Froome doping" is the wrong question. The right question is probably "were Team Sky doping"? read more
Another possible explanation is that more Sky riders had really good days than one would have expected. But none of that is conclusive. So, we don't really know if Sky were doping, and we don't know if Froome was doping. read more