Our public discourse on climate change typically goes from there is man-made climate change to ergo we should approve all those regulations. This inference is hardly ever questioned.
In this segment of a lecture he delivered late last year, Dr. David Friedman argues that if you agree that a) global warming exists (there is hardly any doubt) and b) it is man made (which most climate scientists agree) and c) the predictive models are roughly correct (one can have some dispute over that) then it is still extremely hard to predict whether global warming imposes negative externalities, especially 100 years in the future. These arguments of the degree of uncertainty and the positive externalities of global warming are constantly suppressed in our mainstream discourse.
Dr. David Friedman is an economist, physicist, legal scholar, and libertarian theorist. He is known for his textbook writings on microeconomics and the libertarian theory of anarcho-capitalism, which is the subject of his most popular book, The Machinery of Freedom. He is the son of economist Milton Friedman.