Evergreen notes - 知的生産の技術

なかでも

6. The thing is, if you want to take those thoughts out of your head, basic human I/O says you have to turn the graph into a stream. You can only speak or write one word at a time.

14. The problem with existing notes systems is that they're locked into metaphors from when everything was analog. Files go in folders, and can get tags. At best, they add in the capacity for links to other files

it should be

easily findable (no broad notes), and

easy to build on top of (no fragmented notes)

Note: This is very similar in principle to the software engineering concept of loose coupling (low inter-dependency) and high cohesion (high intra-dependency)