@clacke@libranet.deWow, I should follow this person. Am I already following them? Yep, already following. 
@clacke Conversely: why didn't I see the start of this thread by somebody I'm following. Oh, I'm not following them, must've just been boosts and hash tags I've been seeing for a while.
@clacke@libranet.de@edavies [functional.cafe] Oh yeah, that happens too.
Or: How am I not following this person? Oh, it's because they migrated two times since I followed them and our two implementations together don't communicate migrations.
@clacke@libranet.de(or they migrated without the migration mechanism because the server went down)