Nassim Taleb's Theory of Black Swan Events Explained in One Minute

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Black swan theory - Wikipedia
https://en.wikipedia.org/wiki/Black_swan_theory
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 ...
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Black Swan - Investopedia
https://www.investopedia.com/terms/b/blackswan.asp
A black swan is an event or occurrence that deviates beyond what is normally expected of a situation and is extremely difficult to predict. Black swan events are typically random and unexpected.

For me and probably you as well, it is expected although no one knows the timing.

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