The Dilbert cartoon begins with a climate scientist saying "human activity is warming the earth and will lead to a global catastrophe." When challenged to explain how he knows that, he says they start with basic physical principles plus observations about the climate, which they then feed into models, pick and choose some of the outputs, then feed those into economic models, and voila. When asked, what if I don't trust the economic models, the scientist retreats to an accusation of denialism.
