Humans are to a large degree sensitive to energy fluxes rather than temperatures, which you can verify for yourself on a cold, dark morning in the outhouse of a mountain cabin equipped with wooden and metal toilet seats. Both seats are at the same temperature, but your backside, which is not a very good thermometer, is nevertheless very effective at telling you which is which.
— Craig F. Bohren and Bruce A. Albrecht, Atmospheric Thermodynamics (Oxford University Press, 1998).
