The idea builds off many other note-taking philosophies like Niklas Luhmann's method , and Sonke Ahren's system.
My personal notes system has been heavily influenced by the Evergreening ethos. In both my and on this very website. My notes taxonomy flows from "Seedlings" to "Budding" to "Evergreens"
To help myself internalise some of the main Evergreen principles, I illustrated them out below.