Ed, you have quite oviously misrepresented my position. First in this essay I overtly distinguish between AGW and GW. I state, "The war over global warming is over, although the war over AGW is not over. Many of the more sophisticated AGW skeptics have acknowledged that global warming is real, but continue to argue that human CO2 emissions are not its cause." Thus your claim that, "This piece suffers from a problem common to similar discussions of GW. It conflates GW, AGW, CAGW." is false. i certainly have not conflated AGW, and GW. Many critics of AGW infact deny that GWQ is taking place, or that the pace of GW is being misrepresented by climate scientists. This includs critics of Mann's Hocky Stick. Muller's findings supported Mann's hockystick, by the way.
The incontrovertable evidence that global warming is taking place leaves critics of CAGW with a problem. They have no strong scientifically valid case for any other cause of the global temperature increase. The argument for the Medieval Warm phase analogy ignores the fact that two climate forcing mechanisms are pushing global climate toward golbal cooling. The first is the Earth orbit phase, which is definately in a cooling mode. The second is solar diming, which should be cooling the earth as well. If global temperature is rising despit these two very powerful fooces toward golbal coolling, then there has to be a playsible explanation. Physics offers one, the greenhouse gas explanation. The right-wing critics of CAGW have no scientific, and scientist accepted explanation for the onseerved GW that ignores the role played by greenhouse gases. Such an explanation would have to prove why GHGs are not forcing climate, plus a verifyable explanation of why global temperature is rising in the face of climate mechanisms that would seem to be forcing climate in the opposite direction.