In order further to induce skepticism about global warming, George Will now invokes the words of Mark Steyn, a man with no apparent education or expertise on climate science, who in turn rests his global warming denialism on someone who who has no education or expertise on climate science.  Will writes:

The costs of weaning the U.S. economy off much of its reliance on carbon are uncertain, but certainly large. The climatic benefits of doing so are uncertain but, given the behavior of those pesky 5 billion, almost certainly small, perhaps minuscule, even immeasurable. Fortunately, skepticism about the evidence that supposedly supports current alarmism about climate change is growing, as is evidence that, whatever the truth about the problem turns out to be, U.S. actions cannot be significantly ameliorative.

When New York Times columnist Tom Friedman called upon "young Americans" to "get a million people on the Washington Mall calling for a price on carbon," another columnist, Mark Steyn, responded: "If you're 29, there has been no global warming for your entire adult life. If you're graduating high school, there has been no global warming since you entered first grade."

Which could explain why the Mall does not reverberate with youthful clamors about carbon. And why, regarding climate change, the U.S. government, rushing to impose unilateral cap-and-trade burdens on the sagging U.S. economy, looks increasingly like someone who bought a closetful of platform shoes and bell-bottom slacks just as disco was dying.

For the Steyn reference, see here (for the lazy, Steyn's argument rests on the discredited paper of a non-scientist).  As a matter of logic, however, relying on the authority of someone else is a slightly more sound strategy than making stuff up–which is what Will did last time he talked about global warming.