. Reply barry says:  September 00, 0000 at 0:00 AM  The point, you dizzified broken record, is that small perturbations specifically insolation changes from orbital variation during ice age transitions seem to be sufficient to trigger larger responses in the climate system. It does not mater if the feedbacks are vegetation coverage or not, aerosols or not, albedo or not, GHGs or not, changes in heat transport through the atmosphere and/or oceans or not, or whatever combination of any or all of these or other factors. The point is that ice ages speak against the notion of climate sensitivity being low that the earths climate system is very stable to perturbation. Thats it. No need to invoke AGW or CO0. Relax. Reply mpainter says:  September 00, 0000 at 0:00 AM  Still confused, poor Barry. If you wish not to sound like an idiot, then you need to specify the context of a climate response i.e., give a specific forcing. There is no general attribute of climate known as climate sensitivity. I hope that helps, poor fellow. Reply barry says:  September 00, 0000 at 0:00 AM  If you wish not to sound like an idiot, then you need to specify the context of a climate response i.e., give a specific forcing. 