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John of Kent says:
The amount of CO2 in the atmosphere is irrelevant as the whole idea of a greenhouse effect and back radiation from CO2 somehow warming the earth is pure nonsense and goes against the laws of physics and thermodynamics.
You cannot create energy from nothing and heat always moves down hill- i.e. from hot to cold. NEVER the other way round.
http://www.globalwarmingskeptics.info/forums/thread-794-page-1.html
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David L says:
Excellent post! This pretty much sums it up. I too recognized back in graduate school that academic research is focused on single factors or effects. They probe the basic fundamentals such as the core building blocks of molecules, atoms, and subatomic particles. But once you get a job in industry working with engineers, you quickly learn that the fundamentals are obscured by the complex interactions in a system. Engineers have tools such as DOE that help probe these systems, but the academic is completely unfamiliar with these tools and concepts because interactions are typically not a concern in academic research. The climate is a complex system to the nth degree. Boiling it down to a single factor is beyond wrong and naive.