I use Notion for my evergreen notes so I cannot explore the graph of notes visually (Notion doesn't support this feature yet), but I think that the graph resembles a quite random (no structure) and has very uneven density. There are many cliques of 5-10 notes that are almost fully interconnected. There are larger clusters, comprising several to a dozen such cliques. And there is also a big portion of notes that have only one or two links. On the other hand, there are many notes that have more than ten links.

This is a rough illustration of how the actual web of my evergreen notes should look (I think):

Andy Matuschak writes that evergreen notes should be concept-oriented. However, in practice, I see that both my and Matuschak's notes gravitate towards the following four types of notes (examples are from my notes and from Matuschak's):

• Concept-oriented notes: Loss of lithium inventory, Evergreen notes.
• "Statement" notes: Electrode voltage curves are steeper when the electrode has little lithium, Most people take only transient notes.
• Imperative notes: BMS should use the remaining capacity estimate to narrow down the battery's charge and discharge voltage limits, Evergreen notes should be densely linked.
• List/"outline" notes: Positive feedback loops of cell degradation, Similarities and differences between evergreen note-writing and Zettelkasten.

See Matuschak's Taxonomy of note types.

My evergreen notes (and, evidently, Matuschak's) are not ontologically structured: a typical note with a lot of links, e. g. Lithium plating (currently has 15 links) has a lot of links with all sorts of ontological relationships to the concept note:

• Lithium plating → Cell capacity fade: caused-by
• Lithium plating → Cell degradation: mechanism-of (transitively via Cell capacity fade)
• Lithium plating → SEI layer on anode: appear/happens-beneath (spatial relationship)
• Lithium plating → ‣: no relationship, because the linked note is not concept-oriented. If there was a concept-oriented note "Anode overhang" (there is no), the relationship would be risk-reduced-by. If there was additionally a separate page "Risk of Lithium plating", the relationship would be simply reduced-by.

Next:

• Mental reference frames of concepts have at most seven "features"?
• ‣
• Explaining the power of systems thinking practices using reference frames
• The idea for a new tool for thought: "mind gardener", AI assistant that helps to build a topology of reference frames in the mind of a learner