fuagf -- his getting off into 'there's always condensation and evaporation taking place' was extraneous to understanding the bulk process of the cooler-than-dewpoint surface net absorbing heat both just from the warmer air in contact with it and from the additional heat released by the (resulting) condensation of water onto it -- and I think he was mistaken in how he stated that, as I believe that concept only applies to a water/air boundary, and not for example to a dry glass surface whose temperature exceeds the dewpoint of the air in contact with it (i.e., that concept would become operative, in a background noise sort of way, once water had started condensing onto another surface cooler than the dew point of the surrounding air, but it has nothing to do with why water would initially condense from the air onto another previously dry/non-water surface)
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