In finance, 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 unpredictable.
The term was popularized by statistician and former Nassim Nicholas Taleb in his 2007 book The Black Swan: The Impact of the Highly Improbable.
Bitcoin, the decentralized digital currency, could be considered a black swan event. While the concept of digital currency is not new, Bitcoin is the first implementation of a decentralized, peer-to-peer system that allows for trustless, permissionless transactions.
Bitcoin has the potential to upend the existing financial system, which is why it has been likened to a black swan event.
Bitcoin is still in its early stages and it remains to be seen whether or not it will have a lasting impact. However, given the potential for disruption that Bitcoin poses to the existing financial system, it is certainly worth keeping an eye on.