So the question is, why is entropy a measure of energy description? And so that goes back to the definition of entropy given here that I pulled from your textbook, where entropy is a thermodynamic function that increases with the number energetically equivalent ways to run into components of the system talking together state. So the answer lies in the definition is a measure of energy dispersion because is related to the number of energy tickly equipment ways. So there are multiple ways to arrange a system that air energetically equivalent. So it relates to how that energy is dispersed throughout a system. And so that's why entropy is the find is such.