Red, An ineteresting proposition Black Swan events. I'm familiar with the term from a clleague here at work. While their existence is a given, I don't know how to incorporate them in any sensible way. I suspect it's plan for what's known and try to keep as open a mind as possible to recognise when a black swan appears and then make chances. As John Maynard Keynes said "When the facts change, I change my opinion. What do you do sir?"