O.K., I know what the usual suspects will say — namely, that fears of regulation and higher taxes are holding businesses back. But this is just a right-wing fantasy. Multiple surveys have shown that lack of demand — a lack that is being exacerbated by government cutbacks — is the overwhelming problem businesses face, with regulation and taxes barely even in the picture.

For example, when McClatchy Newspapers recently canvassed a random selection of small-business owners to find out what was hurting them, not a single one complained about regulation of his or her industry, and few complained much about taxes. And did I mention that profits after taxes, as a share of national income, are at record levels?

So short-run deficits aren’t a problem; lack of demand is, and spending cuts are making things much worse. Maybe it’s time to change course?

Which brings me to President Obama’s planned speech on the economy.

I find it useful to think in terms of three questions: What should we be doing to create jobs? What will Republicans in Congress agree to? And given that political reality, what should the president propose?

The answer to the first question is that we should have a lot of job-creating spending on the part of the federal government, largely in the form of much-needed spending to repair and upgrade the nation’s infrastructure. Oh, and we need more aid to state and local governments, so that they can stop laying off schoolteachers.

But what will Republicans agree to? That’s easy: nothing. They will oppose anything Mr. Obama proposes, even if it would clearly help the economy — or maybe I should say, especially if it would help the economy, since high unemployment helps them politically.

This reality makes the third question — what the president should propose — hard to answer, since nothing he proposes will actually happen anytime soon. So I’m personally prepared to cut Mr. Obama a lot of slack on the specifics of his proposal, as long as it’s big and bold. For what he mostly needs to do now is to change the conversation — to get Washington talking again about jobs and how the government can help create them.

For the sake of the nation, and especially for millions of unemployed Americans who see little prospect of finding another job, I hope he pulls it off.