I think I am, because I want my referenced notes to be typed. And the depth and accuracy of those types defines the extent of the knowledge being keept track of, considering that it also evolves and morphs over time. If I don't care to have categories of notes that I comprehend (Persons, Projects, Vehicles, …) and curated and up-to-date properties for them, I don't even know what kind of content is there and what kind of queries/answer I can expect out of my PKMS. I want determinism on a formal, fundamental level.