Replying to @seanodiggity and @nytimes, @PrivacyProject, @YalePrivacyLab
And also
Replying to an earlier tweet of mine and @seanodiggity, @adrianegger, @johnwilander, @nytimes, @PrivacyProject
It's an unsolved problem for a reason. Which isn't a reason to give up - quite the contrary - but it's safe to assume one can't "just" fix it by wanting to.