Well, that could have gone better.

Everybody knew the first few months of 2014 would show weak growth readings, thanks partly to bad weather. But not too many people expected growth to be this weak — only an 0.1 percent rate of gross domestic product growth, the Commerce Department said Wednesday. The consensus of economists surveyed by Bloomberg was that that number would be 1.2 percent.

Still, there is no reason to panic; quarterly economic readings are volatile, and this one will be revised twice, perhaps significantly, in the coming months. The bad weather won’t continue forever. Above all, this report helps highlight how the complexion of U.S. economic growth is changing.

In short: Business investment is no longer a significant driver of the expansion. And nothing else (government spending, trade, housing) has emerged to replace it.