[quote=@PrivateVentures]
[@Mistiel] I didn't google it yet. Is it a thing? 

I like the idea, but I have to wonder- why don't they communicate via written or digital means?
[/quote]

The digital means can be explained by the Progenitors not making cellphones, laptops  and the like publicly available. Writing brings on pain and swelling from the juvenile arthritis everyone was born with since birth.  However, it stands to reason that maybe some character discovers a laptop of say, a former University of Washington medical student, and somehow happens upon knowledge that answers the question of "why are we the way we are?"  Although if holding a pen brings on swelling, perhaps typing does as well.  Hard to say....that seems like a topic for a consensus vote.