The gray rhino growing on the African savannah has a huge body, giving people the illusion of being slow and safe and harmless
they often ignore the existence of danger-when the gray rhino is provoked and attacked, it will show amazing Explosive force, the probability of stopping it is close to zero, and eventually it will cause a very destructive disaster. High probability and strong destructive power are the most important features of the grey rhino event. Many crisis events are more like grey rhino than black swans. They do not originate from unpredictable, small-probability events (black swans), but are the result of the continuous evolution of high-probability, high-risk events (grey rhino) whose existence has long been known to exist, but is due to institutional or cognitive Limitations, not actively prevented and responded to, and eventually escalated into a comprehensive systemic crisis.
Behind many black swan events is the grey rhino crisis