@dredmorbius On the subject of "versioned documents" (as in, Wiki or source-control type systems that publish all previous editions of a document or a set of files, annotated with discussion)
1. I'm still not sure that this is a completely new thing in history. Religious and legal communities (in ancient times, the same groups) have had extensive traditions of "texts, anf commentaries on the texts" for millennia. Eg Judaism's Midrash https://en.m.wikipedia.org/wiki/Midrash