<prompt> Ketsahalo ea Black Swan ke eng?nan  <response>: Instruction in English: What is a Black Swan event? . Response in English: A black swan event is an unpredictable, unexpected event that has significant and far-reaching consequences. The term was popularized by Nassim Nicholas Taleb, a Lebanese-American scholar and statistician, in his book, The Black Swan: The Impact of the Highly Improbable. Taleb describes it as an event that comes as a complete surprise, has a major effect, and is often rationalized after the fact as having been predictable. Black swan events are rare and often disrupt the normal course of things, often resulting in a paradigm shift. Some examples of black swan events include the 2008 financial crisis, the 911 terrorist attacks, and the COVID-19 pandemic. . Response in Sesotho: Ketsahalo ea black swan ke ketsahalo e sa lebelloang, e sa lebelloang e nang le liphello tse kholo le tse tebileng. Lentsoe lena le ile la atolosoa ke Nassim Nicholas Taleb, setsebi sa Lebanese-Amerika le setsebi sa lipalo-palo, bukeng ea hae, The Black Swan: The Impact of the Highly Improbable. Taleb o e hlalosa e le ketsahalo e tlang e le ntho e makatsang ka ho feletseng, e nang le phello e kholo, me hangata e behoa mabaka ka mora hore e lebeletsoe esale pele. Liketsahalo tsa Black swan ha lia tloaeleha me hangata li senya tsela e tloaelehileng ea lintho, hangata e baka phetoho ea paradigm. Mehlala e meng ea liketsahalo tsa black swan e kenyelletsa koluoa ea lichelete ea 2008, litlhaselo tsa bokhukhuni tsa 911 le seoa sa COVID-19. 