Black swan theory The black swan theory or theory of black swan events is a metaphor that describes an event that comes as a surprise, has a major effect, and is often inappropriately rationalized after the fact with the benefit of hindsight. Wikipedia
%% That; + bullmarket uptrends climb a wall of worry. One lady said '''don't tell me does no good to worry; almost all the stuff I worry about never happens ''LOL-LOL................................................................................