What can be proved about past games performed in less-than-fully-stringent conditions is beside the point. As far as I am concerned, once Niemann has passed al

What can be proved about past games performed in less-than-fully-stringent conditions is beside the point. As far as I am concerned, once Niemann has passed all the tests his accusers can come up with, he would be vindicated, and they would be subject to opprobrium - it would be a vindication unavailable even through a successful libel suit. There's no infinite regress of suspicion in this view.