Before revision: Origins Rumsfeld's statement brought attention to the concepts of known knowns, known unknowns, and unknown unknowns, but national security and intelligence professionals have long used an analysis technique referred to as the Johari window.
After revision: +Rumsfeld matrixThe Rumsfeld Matrix (Chapter 13) - The Climate Demon, Saravanan R., Cambridge University Press (2021) Online ISBN 9781009039604, DOI URL know itWe don't know itAccuracyWe know that we know itKnown–knownsUnknown–knownsWe don't know that we know itKnown–unknownsUnknown–unknownsOrigins Rumsfeld's statement brought attention to the concepts of known knowns, known unknowns, and unknown unknowns, but national security and intelligence professionals have long used an analysis technique referred to as the Johari window.