There is nothing investors hate more than uncertainty. Right now, that is all there is. Uncertainty about the severity and duration of the coronavirus outbreak , ripping around the world at something like light speed. Uncertainty about how the global economy will fare as factories, airports, stores, schools, entire cities shut down. Uncertainty about the ability of governments to contain the disease and the power of central banks to counter its economic fallout . Uncertainty about how long all this uncertainty will last. The spiraling fears have caused financial carnage. The S&P 500 index has dropped 12 percent since Feb. 19, the sharpest dive in nine years. The plunge has obliterated roughly $3 trillion in wealth. In the past two weeks, even decent days have been tinted with a scary aura. On Friday afternoon, the S&P was poised to lose more than […]