Cards always link to other cards
カードは常に他のカードとリンクさせる
ノートを分類・構造化することではなく、IDを使ったカード間のリンクによって知識のネットワークを作る
Zettelkasten rules
When you add a card, make sure it is linked to an existing card, so that no card stands alone and is not connected to other cards. As Luhmann himself said, 'Each card is just an element that derives knowledge from a linked network. A card that is not connected to the network is lost and forgotten.'