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1A mainly black swan with white flight feathers, which is common in Australia and Tasmania and has been introduced widely elsewhere.
- ‘The Delhi zoo had about 4-5 pairs of black swans, but now their numbers has come down to one male and two females.’
- ‘One day, I took a short-cut across St James's Park and saw, in the lake, a black swan.’
- ‘The black swans were given to the university by the Wildlife And Wetlands Trust, in exchange for Pochard duck eggs.’
- ‘There were black swans and white swans in the park, and a huge dolls' house where rabbits lived.’
- ‘There was also a mass of black swans, making little cooing sounds that reminded me of learning to play the recorder in primary school.’
2An unpredictable or unforeseen event, typically one with extreme consequences.[as modifier] ‘geopolitical black swan events, such as the Arab Spring and the Japanese earthquake, have further complicated the market dynamics’
- ‘To defend ourselves against black swans, general knowledge is a crucial first step.’
- ‘Traders stop blaming losses on so-called Black Swans and instead accept that their own models are wrong.’
- ‘Observers of black swans tend to overestimate the analysable and underestimate the non-explainable.’
- ‘The prospect of a black swan event is interesting and worth thinking about.’
- ‘I hope this system will improve our reliability to the point where the only outages we suffer are really the extremely unexpected black swans.’
- ‘Not all black swans are bad: some of them, like the rise of the Internet, are fantastically good.’
- ‘He also argues that one of the problems with black swans is that, although they are prospectively unpredictable, in retrospect they look like they could have been foreseen.’
- ‘The great financial crisis of 2008 to 2009, whose consequences still blight our economy, is sometimes portrayed as a black swan.’
- ‘The black swan concept focuses on an individual event instead of the cumulative probability of the numerous events that will lead to the same outcome.’
- ‘But in risk management we need to deal with black swans that have consequences.’
- ‘Options provide the right to buy a stock at a prearranged price in the future, presumably helping to protect buyers from black swans.’
- ‘The focus of the investigation should not be on how to avoid any specific black swan, for we don't know where the next one is coming from.’
- ‘At the same time, even if we were to accept that black swans really are the drivers of history, would that necessarily mean that they are unpredictable?’
- ‘A black swan event tends to answer a question never asked.’
- ‘Proponents of black swan strategies argue that during the financial crisis, most markets moved downward at the same time, and therefore those who counted on diversification to save them were sorely disappointed.’
- ‘Black swan events only exist if we focus on causes instead of outcomes.’
- ‘Black swans can have extreme effects: just a few explain almost everything, from the success of some ideas and religions to events in our personal lives.’
- ‘No one could have foreseen that so many of the financial innovations would turn into black swans.’
- ‘Black swans are unpredictable, Taleb argues, because by their nature they represent a break with what has come before.’
- ‘Stimulus after stimulus leaves us with no savings, overleveraged and unable to cope with the next "black swan" that comes along.’
black swan/ˌblak ˈswän/
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