[specialist]

FWIW, ironically and counter intuitively, "the right to be forgotten" achievement is unlocked with the combo of RealID (or equiv) and "translucent database" techniques.

(Over simplifying: just like properly salted and hashed password files. Lose the password and you cannot retrieve the encrypted data.)

Using your essay as a starting point, I'll start pondering what a future "right to be remembered" system might look like. Both technically and legally.