Sorry, but if you think that AGW and General Relativity are statements of similar stature, you need to learn more physics. General Relativity could not be derived from the prevailing paradigm at the time (Newtonian physics). It was a completely new framework proposed to explain certain observations that could not be explained in Newtonian physics. In contrast, AGW was not proposed to explain <i>any</i> observation. It was derived from accepted physics.<p>Not that I ever said that you don't need to subject either to tests. You absolutely do. But if you think you can "prove" a scientific theory, I think it is you who is showing a profound misunderstanding of the scientific method.<p>You can <i>never</i> prove a scientific theory, you can only disprove it. You can confirm a theory a million times but that does not imply that it will work the next time. It does however give us some amount of confidence that it will.<p>My point is that as far as scientific statements go, that AGW happens is like saying "I think the ball will fall", while to say that it doesn't happen is to say "I think the ball will fall, but imperceptibly slowly.". Both should be tested, but given that one agrees with known physics and one does not, I think the latter should be viewed with more suspicion.<p>But maybe that's just me.