If I do most of my public activity under identity Bob but the government knows me as Dave, someone can still misrepresent me as I'm acting as Bob by misquoting things written under the Bob identity in the past.
If I want to prevent permanent records I would have to switch identities every so often which is hard to do without losing something if you have anything attached to those identities that you don't want to lose.
Haven't had one of these for awhile. This thread is for questions or comments that you've felt silly about not knowing/understanding. Let's try to exchange info that seems obvious, knowing that due to the illusion of transparency it really isn't so obvious!