A Zettelkasten helps you produce writing. As a writer myself, I'm biased in this viewpoint, but I have a hard time imagining an ultimate use for a Zettelkasten other than writing. Yes, a Zettelkasten helps you retain what you read – but so you can turn that knowledge into writing. Yes, a Zettelkasten helps you retrieve knowledge when your memory fails you – so you can turn that into writing. Yes, a Zettelkasten helps you decide what to read next and develop your ideas – it even helps you have ideas. But what is all that for? To produce writing.
