Zettelkasten

The method is old: one atomic idea per note, each note linked to its neighbors, no rigid folders. Niklas Luhmann wrote 90,000 of them on paper.

The rules I keep:

• one idea per note, small enough to hold in your head
• link generously with Wikilinks
• let structure emerge from links, not from a folder tree

It pairs naturally with Agentic Engineering: both reward writing things down clearly enough that something else - a future you, or an agent - can act on them.