How so? Or rather, taking change for a given, what are believable indicators that a secret organization outside normal systems of law and publicity has changed _for the better_? After all, the Snowden relevations lead not to the NSA deciding that creating a global panopticon for a super-surveillance state would be a bad idea, but rather them doing their damnedest that never again the American public would be informed of the true scale of their dystopian actions.