The current economic downturn has been called a housing crisis, a financial crisis and a debt crisis, but the simplifying logic of the political season has settled on what is really more a result than a cause. We are now, according to nearly everyone running for office, in a jobs crisis. Every politician currently has a “jobs plan,” very often a list of vague proposals filled with serious-sounding phrases like “budget framework” and “regulatory cap” that are designed, for the most part, to mean both everything and nothing at all.

Starting this week, I’ll be writing a regular column in the magazine that tries to demystify complicated economic issues — like whether anyone (C.E.O.’s, politicians, people running for the presidency) can actually create jobs. The fact is that creating them in a far-too-sluggish economy is practically impossible in our current capitalist democracy. No corporate leader is rewarded for hiring people who aren’t absolutely required. Most companies hire only when its workforce can no longer keep up with the demand for its products.

Even with all the attention on hiring, the government’s ability to create jobs is pretty dispiriting, no matter who is in charge. The most popular types of jobs programs involve state tax breaks or subsidies that seek to seduce a company from one state to another. While this can mean good news for “business-friendly” states like Texas, such policies don’t add to overall employment so much as they just shuffle jobs around. This helps explain Rick Perry’s claim that more than one million jobs were created under his watch in Texas while the rest of the country lost more than two million.

The federal government does something similar when it decides, for instance, to regulate oil drillers and subsidize windmill makers. Such a policy might help the environment but it just moves jobs from one sector to another without adding any. And while both Perry and Mitt Romney propose that further oil and gas drilling in the U.S. will transform the jobs picture, only 30,000 Americans work in oil and gas extraction, and about another 125,000 in support occupations. With more than 25 million Americans unemployed or underemployed, it’s unlikely that any changes in that part of the energy sector would make a real dent.