An important essay from Richard Epstein:

The worst way to get a full exchange of views on the complex matter of global warming is to pack the IWG entirely with members from the Obama administration, all surely preselected in part because they share the president’s exaggerated concerns with the problem of global warming. The only way to get a full and accurate picture of the situation is to listen to dissenters on global warming as well as advocates, which was never done. After all, who should listen to a “denier”?

This dismissive attitude is fatal to independent inquiry. No matter how many times the president claims the science is rock-solid, the wealth of recent evidence gives rise to a very different picture that undercuts the inordinate pessimism about climate change that was in vogue about 10 years ago. The group convened in the Obama administration never examined, let alone refuted, the accumulation of evidence on the other side. Indeed, virtually all of its reports are remarkable for the refusal to address any of the data at all. Instead, the common theme is to refer to models developed by others as the solid foundation for the group’s own work, without questioning a word of what those models say.

The second major mistake in the government studies is the way in which they frame the social costs of carbon. As all champions of cost/benefit analysis understand, it is a mistake to look at costs in isolation from benefits, or benefits apart from costs. Yet that appears to be the approach taken in these reports. In dealing with various objections to its reports, the IWG noted in its July 2015 response that “some commenters felt that the SCC estimates should include the value to society of the goods and services whose production is associated with CO2 emissions.” Their evasive response has to be quoted in full to be believed: “Rigorous evaluation of benefits and costs is a core tenet of the rulemaking process. The IWG agrees that these are important issues that may be relevant to assessing the impacts of policies that reduce CO2 emissions. However, these issues are not relevant to the SCC itself. The SCC is an estimate of the net economic damages resulting from CO2 emissions, and therefore is used to estimate the benefit of reducing those emissions.”

In essence, the benefits from present or future CO2 emissions are not part of the story. Yet a truly neutral account of the problem must be prepared to come to the conclusion that increased levels of CO2 emissions could be, as the Carbon Dioxide Coalition has argued, a net benefit to society when a more comprehensive investigation is made. The entire process of expanding EPA regulations and other Obama administration actions feeds off this incorrect base assumption. The most striking admission of the folly of the entire EPA project comes from EPA Chief Gina McCarthy, who has stated that she would regard a decrease of one one-hundredth of a degree as enormously beneficial, notwithstanding its major cost, because its symbolism would “trigger global action.” No cost/benefit analysis would justify wasted expenditures solely on symbolic grounds. After all, human progress on global warming will only suffer if other nations follow our false siren on CO2 emissions, while ignoring the huge pollution that envelops major population centers like Delhi and Beijing.

It’s both junk science, and junk economics.

[Update a few minutes later]

A podcast with Judith Curry.

[Update a couple minutes later]

Bob Zimmerman has thoughts on the upcoming squealing of the climate pigs.