Daniel B. Botkin: Absolute Certainty Is Not Scientific - WSJ.com: "Some scientists make "period, end of story" claims that human-induced global warming definitely, absolutely either is or isn't happening. For me, the extreme limit of this attitude was expressed by economist Paul Krugman, also a Nobel laureate, who wrote in his New York Times column in June, "Betraying the Planet" that "as I watched the deniers make their arguments, I couldn't help thinking that I was watching a form of treason—treason against the planet." What had begun as a true scientific question with possibly major practical implications had become accepted as an infallible belief (or if you're on the other side, an infallible disbelief), and any further questions were met, Joe-McCarthy style, "with me or agin me.""
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