My op-ed on National Review Online today provided new information about the increasing number of federal subsidy programs. The federal welfare state is expanding rapidly.

One friendly reader emailed me:

Ever cross your mind that there’s a reason government programs increase over time? I’ll clue you in: Programs increase because of public demand.

It’s not rocket science, people want more services. Period. Somebody’s got to pay for them. Hences taxes. Or perhaps borrowing. Or a combination of both. In any event, there’s no evidence people are willing to get along with fewer services.

The situation seems simple to me; so why can’t you ideologues on the far right understand what’s going on. Instead, you simply go on bemoaning the existence of programs and taxes you don’t like.

There are numerous problems with this reader’s views, including constitutional problems. But one thing that strikes me is the underlying assumption of the “public interest theory of government,” or the idea that democracies and bureaucracies operate to efficiently provide “services.”

In reality, there are structural problems in government that bias policymakers toward fiscal irresponsibility, as our current $1.8 trillion federal deficit indicates. The issue is not ideology, it is scientific: Does the government actually work as the optimists, like this reader, believe? I think the empirical evidence is in on that question.