Entropy increases when kids are bored

The second law of thermodynamics states that entropy, another term for chaos, gradually increases in a closed system. The most compelling proof of this is observed when you unleash bored kids into a tidy room.

At first, the disorder seems manageable, even non-existent. They start by pulling open drawers that are supposed to open, and removing items that are supposed to be removed. Then they start mixing items from two different drawers. A nontrivial amount of effort is now required to restore the universe to its prior state.

Then a foot accidentally shoves an action figure under a piece of furniture. For how long will this unfortunate hero be condemned to obscurity? It may be weeks or even months before the equilibrium can be restored.

Then they discover the playdough. You feel something profound is about to happen. Before you know it, they're busy mixing and mashing the green and red dough. This is an irreversible violation of the order in the universe. The act can never be undone.

Something that was, is no more.