Most of the time, a 6.5 percent rate of economic growth would warrant celebrations in the streets. Only in the weird economy of 2021 can it be a bit of a disappointment.It’s not simply that forecasters had expected a G.D.P. growth number that was a couple of percentage points higher, though they did. And it’s not even that America’s output remains below its prepandemic growth path in inflation-adjusted terms, though it is.What makes the new G.D.P. numbers on Thursday feel less than buoyant is the degree to which they reflect a nation still …
