For a note to be useful to me, it has to be quick to make. For a note to be useful to another person, it has to contain enough context for them to be able to decipher it.
For example, the notebook on my desk reads "core 495 0.20%" which I know is the number and fraction of users in the core group - and I have enough context to know what those all mean. If I had to write down that context in a way other people could understand, it would no longer be quick to write, so it would no longer be a note.
Is your idea of what note-taking is different to mine?