When that consensus vanishes? Not speaking for GIGO, but he seems a reasonable sort of fellow, sort of thing I would expect a reasonable fellow to say.
But here’s the thing, as I alluded to upstream: that consensus was not poltical, it was not ideological, and it was by no stretch of the imagination an instant hit. Scientists resist the Big Idea, as do most of us. But we can be moved by persuasion, an apt analogy, a spark of wit. They seem actually to despise such skills, so much of their prose seems shaped by the same dulling hand, ruthlessly determined to commit boredom and stupefaction.
Science did not leap upon AGW with glad cries and a scattering of confetti, the consensus was formed upon the more or less unwilling audience by the hard empirical demands of their shared calling. AGW won that consensus not by persuasion, nor advertising. Heaven knows it wasn’t because great capital concerns rushed to shower money upon the researchers!
This is accentuated by the nature of the science, like biology, climatology is much more inductive than chemistry or physics, the scientist is hampered by his inability to perform experiments on so vast a question as the Earth’s climate. You can’t cut a slice of the climate off, go to your lab and fuck around with it. The reproducible result, that most sacred of grails in science, is pretty much out of the question, you don’t get to say “Lets crank up solar output by 10%, see what happens!” You can’t do it, and even if you could, we wouldn’t let you.
Therefore, opinion must change slowly, you simply don’t have the opportunity of shattering a lovely theory with a single ugly experiment. Einstein famously wiped the floor with his detractors when his exact calculations for light refraction were proved to be right. That is the wonderful of advantage of such science, but it simply isn’t possible for climate science.
The current consensus for AGW was slow in coming, the tormenting drip drip drip of facts took a while to take effect. And for that consensus to disappear would take at least as much mental energy and time. Since it is nearly impossible to conceive of a single experiment that could unravel all of that inductive reasoning in one swell foop.
In a nutshell, get used to it, get over it, or change your mind.