Energy Science
French physicist Sadi Carnot wrote in 1824 that given enough time, all systems tend toward equilibrium – no hot, no cold, just lukewarm throughout. It’s inevitable, said the science world, and entropy theory became a cornerstone of modern thermodynamics.
Well, no disrespect to the 2nd Law or the irreversibility of nature, but we’ve got some pretty clever ways to see that hot and cold are separate – for a long, long time. Come freezing temperatures and Rocky Mountain blizzards outside, your building stays nice and cozy on the inside. All winter long. (Sorry, Mr. Carnot.)