[TeMPOraL]

I feel the pain. So much software doesn't even expose a proper tree, much less a DAG. But that seems to be improving somewhat - I see trees in software more often. I just worry I'll retire before the ecosystem makes the cognitive jump to start implementing/exposing DAGs.

> I can think of are note apps with their weird "notebook", "chapter","page" concepts rather than just letting me choose the depth of nesting I need.

Exactly! And then you end up using "outliner" software for this, and then people are surprised that you need rich text capabilities in it. In reality, what's needed is to combine both, to get a note-taking app with arbitrary nesting levels.