Dennis, I see your point about the glaciers, though I think the current trend is more sharply defined than that. It's an area in which reasonable people can certainly disagree; since there are so many other problems associated with pollution that is generated along with the CO2, not to mention the geopolitical instabilities around fossil oil, I'd say we're better off to act now to look for better energy sources. It seems we may be in agreement there, in any case.
But then again, my willingness to accept ambiguity and try to see multiple sides of an argument may be another one of those unstated assumptions I absorbed from an early age-- my parents (particularly my mother) are much the same way.
I've also put some work into trying to deconstruct my assumptions over the years-- I think it's best to consider that an ongoing project, don't you?