ah ha! Phase change.
I’d been working heavily on linking concepts using Wikipedia as a resource and yEd as a tool but the last graph I worked on from that was October 1, 2021.
This is Oct 7, 2021. From that point on, I’d started on a personal history tour tracking down when I’d seen particular shows, what teachers I’d had in which years… but it wasn’t fully organized like the Wikipedia project and trailed off.
The Cable Box.