Quote from trefoil:
Don't change the subject. Account for the accuracy of the formula. It shows in very simple terms that all you need to predict temperature anomalies within a reasonable range of their actual occurrence is the change in CO2 levels since 1959.
I've had enough, more than enough, of all this obfuscation. You know what the data very clearly shows. Math is math is math, and shows very precisely that CO2 is the major force accounting for the warming of the planet since the 50's.
Account for the accuracy in some other terms, or give up and admit that all you need to explain present-day warming is CO2.