## https://en.wikipedia.org/wiki/There_are_unknown_unknowns

## https://en.wikipedia.org/wiki/The_Unknown_Known

https://medium.com/@andreamantovani/known-knowns-known-unknowns-unknown-unknowns-leadership-367f346b0953

- [quantum statistics of LEEs in QLTG](https://knowen.org/nodes/27751?path=1-18-60-27729-27731-27751)

## Known unknwon

https://en.wikipedia.org/wiki/The_Elephant_in_the_Brain