really? after a four year and one month vertical ascent? Bull markets last 3-4 years maximum. time for a 9 month to 1.5 year bear market. Its the normal business cycle. No one can stop the normal business cycle. There is no money for consumption. Remember twice as many folks go on disability and drop out of labor force each month than jobs created. Yet the US population continues to grow. what don't you understand. The domestic economy is in Recession and the market always corrects at least 20% when the US economy is in recession. Now the economists will blame it on Boston but it already began in Q4 2012. Pay attention to ECRI.