Many refer to the Covid-19 pandemic as a drastic example of a black swan. However, according to Nassim Nicholas Taleb, it is not considered a Black Swan Event. He does not define a global pandemic as unforeseeable, but rather as an event that will certainly occur at an unspecified time. Although the pandemic hit the stock market like a bolt, leading many to believe it was a black swan, pandemics are not considered entirely unforeseeable. They usually occur every 20 to 30 years, with past examples before the Covid-19 pandemic being Influenza or Ebola.