Here's some food for though regarding science in a lab and actual real life observations. Anyone familiar with Gore tex will know exactly what I mean, during the 90's WL Gore brought out a 2 layer fabric which they claimed through extensive testing was more breathable than the 3 layer equivalent. All the lab test backed up these claims of better moisture transportation in a two layer garment, however once it went on sale to the general public such claims were soon found to be wanting as the lining they inserted to protect the gore fabric inhibited breathability in real world conditions. Now the point of this is simple really as just because a theory works in a lab in the real world the results can be quite different, so we can put that theory to test with CO2 and feedbacks in the atmosphere, what we know in a lab could be actually quite the opposite in the real world, or is climate science above this sort of real world observational evidence.