[ravenstine]

It depends on what we want to do collectively, which seems largely undecided. If we want to look at addressing climate change as a way to stabilize the environment in a way that we see fit, then there may be more ways than just CO2 in which we could do so. Unfortunately, a lot of more environmentally-minded individuals, including politicians, speak as if their beliefs are that humans should have no impact on the environment whatsoever and that the environment of the mid-to-late Holocene epoch is the correct one. Neither of the latter is accurate or possible, but superficially it would seem compatible with the view that we should tweak the variables so that the environment suits our needs.