The post-Lehman US economy has been quite adept at surprising and confounding analysts. For the last five years, Federal Reserve staff have continually made rosy projections, only to repeatedly revise them lower. They are not alone; private economists have also been caught analytically flat-footed on several occasions. Recent economic data continues this trend, forcing downward revisions to GDP growth projections. After a 5%+ 3Q14 read, top-line growth slowed sharply in 4Q14. 1Q15 will probably be even slower. This economic slowdow