Entropy is a physical concept often casually described as disorder, butit differs significantly from the conversational use of the word.

And again, the reason this simple model works is because although a real liquid, certainly a pure liquid has a finite entropy, a substantial amount of disorder, that's present, that kind of disorder.

A key idea in Venkatasubramanian's theory is a new interpretation of entropy, used in science to measure disorder in thermodynamics and uncertainty in information theory.