Not only does this show that government numbers like unemployment and GDP are too broad to be really useful, but that the details within them are more troubling for the future than the public realizes.

The third-quarter GDP figures, released on Oct. 29, showed the economy growing at a 3.5% annual pace, breaking a string of four consecutive negative quarters. The growth was driven mostly by a surge in the production of motor vehicles and other manufactured goods.

This number was greeted by many economists and journalists as confirmations that the recession is over. What’s more, the rise in real GDP, combined with a sharp fall in employment in the third quarter, implies that productivity also soared during the period. Good news, right?

The trouble is that those GDP and productivity growth figures could be significantly overestimated—perhaps by one percentage point or even more.

That’s because the official statistics are not designed to pick up cutbacks in “intangible investments” such as business spending on research and development, product design, and worker training. There’s ample evidence to suggest that companies, to reduce costs and boost short-term profits, are slashing this kind of spending, which is essential for innovation.
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Here’s a sobering sign that companies are robbing the future to pay for short-term profits: Over the past year, U.S. employment of scientists and engineers—the people who create the next generation of products and make the U.S. more competitive over the long term—has fallen by 6.3%, according to a BusinessWeek tabulation of unpublished data. Yet overall employment has fallen only 4.1%.