Maxwell’s Demon Cheats Entropy—Until the Bill Arrives

Added: 2026-05-25

[00:00:00]You become Maxwell's demon for a minute.

[00:00:03]You watch fast molecules race at a tiny door and you let the hot ones through one way, the slow ones the other.

[00:00:08]Suddenly one side heats up, the other cools down, and it looks like you just cheated entropy.

[00:00:15]But then the bill arrives.

[00:00:16]>> [music] >> To keep sorting, you must store information. To keep going, you must erase it. And erasing memory releases heat. [music] That means your knowledge was never free. The trick only worked because the real cost was hidden in the bookkeeping. [music] The demon does not beat physics. It exposes the full heat that