It is true that Calzada has come to conclusions that he, as a libertarian, finds ideologically congenial. And his study was supported by a like-minded U.S. think tank (the Institute for Energy Research, for which this columnist has given a paid speech). Still, it is notable that, rather than try to refute his report, many Spanish critics have impugned his patriotism for faulting something for which Spain has been praised by Obama and others.

Judge for yourself: Calzada's report can be read here. And here you can find similar conclusions in "Yellow Light on Green Jobs," a report by Republican Sen. Kit Bond, ranking member of the Subcommittee on Green Jobs and the New Economy.

What matters most, however, is not that reports such as Calzada's and the Republicans' are right in every particular. It is, however, hardly counterintuitive that politically driven investments are economically counterproductive. Indeed, environmentalists with the courage of their convictions should argue that the point of such investments is to subordinate market rationality to the higher agenda of planetary salvation.

Still, one can be agnostic about both reports while being dismayed by the frequency with which such findings are ignored simply because they question policies that are so invested with righteousness that methodical economic reasoning about their costs and benefits seems unimportant. When the president speaks of "new green energy economies" creating "countless well-paying jobs," perhaps they really are countless, meaning incapable of being counted.

For fervent believers in governments' abilities to control the climate and in the urgent need for them to do so, believing is seeing: They see, through their ideological lenses, governments' green spending as always paying for itself. This is a free-lunch faith comparable to that of those few conservatives who believe that tax cuts always completely pay for themselves by stimulating compensating revenues from economic growth.

Windmills are iconic in the land of Don Quixote, whose tilting at them became emblematic of comic futility. Spain's new windmills are neither amusing nor emblematic of policies America should emulate. The cheerful and evidently unshakable confidence in such magical solutions to postulated problems is yet another manifestation -- Republicans are not immune: No Child Left Behind decrees that by 2014 all American students will be proficient in math and reading -- of what the late Sen. Pat Moynihan called "the leakage of reality from American life."