I tend to keep linked notes (e.g., mind mapping). In fairness, I'm bad at being consistent. But once you have a mind map or similar (generally with themes or t

I tend to keep linked notes (e.g., mind mapping). In fairness, I'm bad at being consistent. But once you have a mind map or similar (generally with themes or topics as title) you have an exportable resource. Once you have an exportable resource you can release the kraken (let slip the dogs of war?) and do whatever you want with it. Things like spaced repetition, reminders of things you haven't looked at or thought about over time, totally random, etc. It's cool. A "random" link from the past, or a book passage, or a note tree, or even just exploring a random path, might directly solve a current problem or push you to think in a different direction, or jog a thought pattern you didn't know you had.