Anonymous ID: 4c8e06 Dec. 15, 2018, 8:03 a.m. No.4321771   🗄️.is 🔗kun   >>1920

What is a Black Swan

 

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.

https:// www.investopedia.com/terms/b/blackswan.asp