The addition of a logarithmic response to an exponential increase in the cause of something can in fact add up to a straight line, which is very obvious in a suite of the temperature projections made by our friends at the U.N.
He runs two graphs side by side, one of which shows the temperature record over the past 1, 000 years as rendered by the U.N. panel, and the other purporting to show real temperatures over the same period...