I agree that in Jon Jones' case, the 'I would never be so stupid defense' is not a good defence. Novitzky does defend Jon when he said that anyone could google the metabolite test and find out that it had a much longer detection window than the drug itself. But: This is a guy who said that he trusted a peripheral gym hanger-on to supply him with dick pills from an unknown source when he knew that he was responsible for whatever he put in his body. This indicates a willingness to trust almost anyone about pills and supplements and it shows no evidence of any do diligence when it comes to these things. Now, imagine that someone approaches him, perhaps someone he greatly trusts and who has experience and connections in these things and says they have a steroid that is out of the system in 16 hours and can't otherwise be detected. Now imagine that perhaps this is true for the NFL but not for sports overseen by USADA because USADA uses a metabolite test that NFL players don't have to take into account. I think in this situation, it's quite likely that Jon got caught by a test that he didn't know existed.