I love the spirit of this. Caveman-level simplicity is awesome! I think I am personally too Grug of an audience for Grug Notes, though; my current note taking scheme is vim on text files in a notes folder.
note always “on-hand” when need. hehe
Some people I know follow the system of, if they want to remember it, they write it down. If they don’t want to have to, they type it up.