A new & peculiar essay, on a (very!) unusual approach I've been using to deepen my understanding of mathematics: http://cognitivemedium.com/srs-mathematics
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Interesting! Have you ever forgotten what some of them were about and had to delete them? That's the main reason why I'm a bit afraid of them, I think.
Yes, but it happens very rarely. And usually just means it was a bad card, so I delete.
