“The fallacy—and it is a fallacy Mr Muller commits—is to suppose that because many climatologists have offered one theory for the observed warming (and cooling), and that, at least for the moment, they cannot think of one better, that therefore their theory is true. Thus, I remain skeptical.” (William M. Briggs)
Many climatologists rely on public funding for their jobs. This must be taken into account (taken with a grain of salt) when they offer their theory as fact. That and the fact that there is so much evidence to the contrary.