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A black swan (Cygnus atratus) in Australia. The black swan theory or theory of black swan events is a metaphor that describes an event that comes as a surprise, has a major effect, and is often inappropriately rationalized after the fact with the benefit of hindsight. The term is based on a Latin expression which presumed that black swans did ...
Black Swan was presented in a sneak screening at the Telluride Film Festival on September 5, 2010. [40] It also had a Gala screening at the 35th Toronto International Film Festival later in the month. [41] [42] In October 2010, Black Swan was screened at the New Orleans Film Festival, [43] the Austin Film Festival, [44] and the BFI London Film ...
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The Australian black swan (Cygnus atratus) is completely black except for the white flight feathers on its wings; the chicks of black swans are light grey. The South American black-necked swan has a white body with a black neck. [18]
A grey swan is an event that is known and possible to happen, but which is assumed to be unlikely to occur. [1] The term derives from black swan theory, which describes an event which is unlikely but unknown. [1] In electrical engineering, gray swan refers to the kind of events that rarely happens but have great impact on power systems. [2]
The black swan (Cygnus atratus) is a large waterbird, a species of swan which breeds mainly in the southeast and southwest regions of Australia. Within Australia, the black swan is nomadic, with erratic migration patterns dependent on climatic conditions. It is a large bird with black plumage and a red bill.
The Black Swan: The Impact of the Highly Improbable is a 2007 book by Nassim Nicholas Taleb, who is a former options trader.The book focuses on the extreme impact of rare and unpredictable outlier events—and the human tendency to find simplistic explanations for these events, retrospectively.
The Roman satirist Juvenal wrote in AD 82 of rara avis in terris nigroque simillima cygno ("a rare bird in the lands, and very like a black swan"). [6] He meant something whose rarity would compare with that of a black swan, or in other words, as a black swan was not thought to exist, neither did the supposed characteristics of the "rare bird" with which it was being compared.