I found this “official” definition of entropy on a physics website the other day: “Entropy is the measure of the disorder or randomness of energy and matter in a system. Both energy and matter in the Universe are becoming less useful [and farther away from perfect order] as time goes on.”

Here’s what entropy looks like if you live with cats.

Entropy: A Layman’s Definition-“The perfect order you create in your home to welcome weekend guests will immediately begin to increase in randomness and disorder as you are forced to deal with one cat who poos in the tub, one cat who throws up on the kitchen table, and one cat who runs through the house brandishing what looks like a lizard’s tail, all before 11:30 in the morning.”