I admit to being amused, in that he is implicitly buying into the assumption that there is a mathematical model (which can then be run through a computer) that

I admit to being amused, in that he is implicitly buying into the assumption that there is a mathematical model (which can then be run through a computer) that can describe "how climate works" on Earth. As if there is some huge Excel spreadsheet in a supercomputer and the jerks just keep on putting in wrong numbers to scare us. There isn't, and there won't be for (my estimate) at least another century - we don't even understand the Gulf Stream well enough to accurately model and then predict its behavior, much less everything else, including atmospheric dust.