Comment Re:4C (Score 1) 98
Sigh. I'll bite.
The question seemed to assume it was a good question, and its premises were correct. They aren't. In fact, the CO2 DOES absorb incoming IR, and with the same cross-section, as it does outgoing IR. It doesn't "know which way the radiation is going."
Now, any honest thinker would realize that the question was silly, because it doesn't admit other mechanisms other than "blocking" [sic] of IR.