What is a Black Swan? A Black Swan is an extremely rare, unexpected, and far-reaching event that produces significant consequences that often exceed normal expectations or predictions from historical data and models. The term "Black Swan" was popularized by author Nassim Nicholas Taleb in his book The Black Swan: The Impact of the Extremely Improbable. In the context of finance and economics, a Black Swan event typically involves an event or series of events that cause severe disruptions to financial markets, economic, and social systems. These events are characterized by their unpredictability and significant impact on all aspects of society. Black Swan events may include financial market crashes, economic recessions, geopolitical crises, natural disasters, and technological failures. These events are difficult to predict because they are beyond the scope of normal expectations and often challenge conventional wisdom and established theories. The concept of a Black Swan event highlights the limitations of traditional risk assessment models because they often fail to explain such extreme and unforeseen events. These events remind us that the world is inherently uncertain and it is critical for individuals, businesses, and governments to prepare for and manage the impact of rare, unpredictable events.