>[!abstract] >An idea generation approach that uses a 2x2 matrix as follows: > | | Known to self | Unknown to self | | ----------------- | ------------- | --------------- | | Known to others | Arena | Blind spot | | Unknown to others | Facade | Unknown | >[!related] >- **North** (upstream): — >- **West** (similar): [[Idea compass]]; [[SCAMPER]]; [[There are unknown unknowns]] >- **East** (different): — >- **South** (downstream): —