What I don't understand about Briar is how it can scale. Surely it can't know ahead of time which users are going to "travel to another part of town" and should

What I don't understand about Briar is how it can scale. Surely it can't know ahead of time which users are going to "travel to another part of town" and should therefore have messages pre-loaded onto their devices. Therefore to me this seems like it must use some kind of broadcast delivery model and so would be vulnerable to flooding attacks. Edit: seems there are some thoughts about this already https://code.briarproject.org/briar/briar/-/issues/511 https://code.briarproject.org/briar/briar/-/issues/511