Top level categories in my notes

What kind of top-level categories do you have for your notes? If you’re doing knowledge management you might use or adapt Tiago Forte’s PARA system: Projects Activities Resources Archive Or you might consider using Bob Doto’s four-folder approach: In-box Sleeping References Main Tame the chaos with just four folders for all your notes. Prolific German sociologist Niklas Luhmann’s second collection of notes, his second Zettelkasten (ZKII) was arranged according to eleven top-level categories, based on subjects or themes associated with his singular major project, a theory of society. Organisation theory Functionalism Decision theory Amt: office, post, job, duty Formal / informal order Sovereignty / State Isolated/individual terms, problems Economy Ad hoc notes Archaic societies High cultures In his lecture on Luhmann’s Zettelkasten, researcher Johannes Schmidt of the Niklas Luhmann Archive at Bielefeld University observes that these headings are hardly comprehensive. Instead they…