I've looked through SuperMemo's features and while I completely subscribe to the idea of spaced repetition (I have used Anki for some periods) I was put off by the user interface; perhaps I should try it again.
> There's a general issue that you find the thing you see soonest most shiny and thus a strong likelihood of overprioritizing new material but SuperMemo helps intersperse everything to prevent that.
I really the idea of this approach to keep everything at its proper priority level. Thanks for linking the brain as well - I haven't come across it.
I am vaguely familiar with Xandu as well but it warrants another deep dive for sure.
0 - https://www.supermemo.com/en/archives1990-2015/articles/geni...