Lebanese-American professor/author Nassim Taleb coined the term '(What colour/color What creature?)' referring to an unpredictable random event that has a vast societal/political/economic impact?
Chenopis atratus Black swan Cygnus atratus Anas atrata Byahmul Cygne noir Black swans Black Swan
cygnus atratus black swans byahmul black swan cygne noir anas atrata chenopis atratus
black swan
WikipediaEntity
Black Swan