The kinds of questions I ask when writing flashcards: How can I split this info up into different facts? What facts do I care about / will I care about? But I

The kinds of questions I ask when writing flashcards: How can I split this info up into different facts? What facts do I care about / will I care about? But I think I wouldn't make flashcards for something if I understood it. I've found practicing recall with flashcards highlights what I don't understand. e.g. sometimes I've been confused between similar cards, and it's not obvious when looking at the cards the similarities/differences. I think this complements rather than replaces things like the manually writing notes or explaining concepts.