Why Anthropogenic Climate Change Cannot Possibly Be “Settled Science”

In Science, for a theory to be believed, in must make a new prediction –different from those made by previous theories– for an experiment not yet done. For the experiment to be meaningful, we must be able to get an answer that disagrees with that prediction. When that is the case, we say that a theory is falsifiable –vulnerable to being shown false. The theory also has to be confirmable; it must be possible to verify a new prediction that only this theory makes. Only when a theory has been tested and the results agree with the theory do we advance the theory to the ranks of true theories.

— Lee Smolin