By your logic, I literally cannot think of a single candidate for a Black Swan event. I've seen examples floated: World Wars, Rise of PCs or Internet, Chernoby

By your logic, I literally cannot think of a single candidate for a Black Swan event. I've seen examples floated: World Wars, Rise of PCs or Internet, Chernobyl, September 11th, etc, etc. All of these possibilities were posited by smart people well in advance -- again, it's a matter of setting thresholds on the probabilities.