Quote:
Originally Posted by dalem
Wait a minute. You've just invalidated all of science with the above post. Pretty bold of you, I'd say.
-dale
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Actually Dale, what is being said is that the mere existence of a MWP in and of itself has no bearing on whether CO2 is the major present causative factor of the current warming.
If the thesis was "Warming ONLY occurs as a result of CO2-based triggers", the proof of a worldwide and deep MWP would be proof of the opposite of the conjecture; thus dispositively disproving the conjecture.
I think that the there is somewhat worldwide acceptance that there are multiple potential triggers or causative items; acting alone and/or in conjunction with one another.
Heck, you spout them all the time. (sun, orbital mechanics, .... etc.)
So yes, the evidence of the MWP is very germane to whether Co2 is a *dispositive* causative agent; it is vastly less germane as to whether Co2 is a major factor in this one.
Think about it....