This is a technique to systematically come up with plausible links to other ideas or forming new ideas while using the Zettelkasten Method.
Given a note, think about the four cardinal directions:
- North - think about where the idea comes from
- West - think about what idea is most similar
- East - think about what idea is the opposite of this idea
- South - what's next, what can be built on top of this idea
North
(Where from)
/|\
|
West <----------Idea-----------> East
(Similar) | (Opposite)
\|/
South
(Where to)
Reference