Here's Why The Markets Have Suddenly Become So Turbulent

Nassim Taleb  made out big by backing his own horse. He said that unlikely events happen frequently. So his team dribbled money into shorts for a very long time making losses all the way.
And then he had his moment.

http://www.zerohedge.com/news/2015-08-28/nassim-talebs-fund-made-1-billion-monday-how-other-hedge-funds-did

Chaos theory supports him.  These things are not smooth and continuous.