President Obama’s former head of the Council of Economic Advisers has taken to the pages of the New York Times to warn us against pursuing “fiscal austerity just now,” particularly not spending cuts.

Christina Romer’s views are Keynesian. She doesn’t use that word, but she is focused on juicing “demand” with optimally-targeted and well-managed government “investments.”

Economics has numerous schools of thought, but Romer’s writing reflects nothing but the most simplistic Keynesian framework. The fact that the huge Keynesian stimulus of recent years that she supported has coincided with the slowest economic recovery since World War II seems to be of little concern to her.

She also doesn’t seem to be interested in how government spending actually works in the real world. She assures us that “government spending on things like basic scientific research, education and infrastructure … helps increase future productivity.”

That view has a veneer of economic authenticity, but it leaves many issues unaddressed:

• Most federal spending is on transfers and consumption, not investment. The debt crisis we face is driven mainly by entitlements, which is consumption spending. Romer’s talk of investment spending is a rhetorical bait-and-switch.
• Romer doesn’t distinguish between average and marginal spending. If some federal investment spending has created positive net returns, that doesn’t mean that additional spending would. Governments already spend massive amounts on education, for example, so the marginal return from added spending is probably very low.
• If the government investments that Romer touts are so valuable, then why hasn’t the government done them already? After all, federal, state, and local governments in this country already spend 41 percent of GDP.
• If science, education, and infrastructure investments have the high returns that Romer seems to think they do, then why does the government need to be involved? Private firms seeking higher profits would be all over such investments.
• Romer mentions that the “social returns” on some investments might be higher than purely private returns. However, that doesn’t mean that the government should automatically intervene. For one thing, the government suffers from all kinds of management failures and other pathologies.
• Romer also ignores that the government imposes substantial deadweight losses on the economy when it commandeers the resources it needs for its “investments.”

So my reading assignment for Romer is www.DownsizingGovernment.org so she can get a better understanding of how federal programs actually operate.

And readers interested in all the economics of government spending that Romer doesn’t tell you about can consult Edgar Browning’s excellent book, Stealing From Each Other.