re: #726 Naso Tang

My opinion is that the historical record, meaning all of it, is irrelevant given that there can be and have been different reasons for changes in the past. The only relevance is what effects levels of CO2 have had; but not their causes.

Either it can be proven that humans are responsible for this one or not, and there is ample evidence that it can be proven, or some other cause must be identified, which is not the case as far as I understand (moonbat explanations disregarded).

I can’t think that the historical record is irrelevant. The historical record can be used to calculate what affect CO2 has had on the global temperature. I think there is very little doubt that humans are driving CO2 increases. What affect CO2 has, and to what extent warming can be attributed to it is very relevant.