Very interesting! Thanks so much for taking the time. One system could make sense, but the clutter takes the essence of planning and overview very hard. But that is personal, and also, I haven't tested Mem. But I'm happy for now with my Obsidian and Second Brain. I am just working on another piece where I go more into detail about Zettelkasten and Deep Life. In case of interest: https://www.sspaeti.com/blog/pkm-workflow-for-a-deeper-life/