Definitions for "Black Swan"
large Australian swan having black plumage and a red bill
ethical problem: owing to the nonrepeatable aspect of the Black Swan, there is an asymmetry between the rewards of those who prevent compared to those who cure.
The Black Swan, Cygnus atratus is a large non-migratory waterbird which breeds mainly in the southeast and southwest of Australia. It is also found along the east coast of Australia, Tasmania and recently reintroduced in New Zealand. Prior to the arrival of the Māori, a sub-species known as the New Zealand Swan used to live in New Zealand.
an outlier, an event that lies beyond
a phrase coined in reference to a rare event, an event which happens
a unpredictable event that defies prediction
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