I am still working on actually implementing a personal ZK system in Obsidian or on paper (I am looking forward to Scott Scheper's book about Antinets). I manage people and write software for a living, but I don't really write articles or papers (which ZK seems a good fit for). I just finished "How to Take Smart Notes" by Sönke Ahrens, and it has inspired me to take another pass at starting a ZK for the benefits of greater understanding and insight about the variety of topics I read about.