Saturday Morning Breakfast Cereal by Zach Weinersmith for January 16, 2017

Maxwell’s demon occupies a very specific corner of Hell. He’s very selective about it.

That guy would not look cool today.

In the philosophy of thermal and statistical physics, Maxwell’s demon is a thought experiment created by the physicist James Clerk Maxwell in which he suggested how the Second Law of Thermodynamics might hypothetically be violated.1 In the thought experiment, a demon controls a small door between two chambers of gas. As individual gas molecules approach the door, the demon quickly opens and shuts the door so that fast molecules pass into the other chamber, while slow molecules remain in the first chamber. Because faster molecules are hotter, the demon’s behavior causes one chamber to warm up as the other cools, thus decreasing entropy and violating the Second Law of Thermodynamics. Wikipedia

William Thompson (Lord Kelvin) was the one using the identifier “demon” and implied that he intended the mediating, rather than malevolent, connotation of the word.345

If the interior is “entirely cool”, then it will be an absolute zero.