 Entropy

Entropy is a concept that appears in various fields, such as thermodynamics, information theory, and statistical mechanics. Its meaning can vary slightly depending on the context, but generally, it refers to a measure of disorder, uncertainty, or randomness in a system. 1. **Thermodynamics**: In thermodynamics, entropy is a measure of the amount of energy in a physical system that is not available to do work. It is often associated with the degree of disorder or randomness in a system.

OK, can someone please just stop the philosophy and give numerical predictions of how entropy helps you predict the future?

The original notion of entropy, and the first one you should study, is the Clausius entropy.

For entropy in chemistry see: entropy of a chemical reaction.