Greenhouse gas theory manages to not only violate the 1st law of thermodynamics
, but the 2nd law as well. There are many ways of stating the second law of thermodynamics, such as "In a system, a process that occurs will tend to increase the total entropy". But Rudolf Clausius provided the simplest formulation of the second law:
"Heat generally cannot spontaneously flow [i.e. the net vector] from a material at lower temperature to a material at higher temperature."
“Heat doesn’t flow from cold to hot (without work input)”
Note how this diagram from NASA of the second law of thermodynamics (without work input) illustrates the net flow of heat as a one-way vector always from hot to cold:
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