You're confusing the first law with the second law. First law: energy can neither be created nor destroyed Second law: entropy always increases > There's a r

You're confusing the first law with the second law. First law: energy can neither be created nor destroyed Second law: entropy always increases > There's a reason the first law of thermodynamics is first The first law of thermodynamics is not the first. That would be the zeroth law: https://en.wikipedia.org/wiki/Zeroth_law_of_thermodynamics https://en.wikipedia.org/wiki/Zeroth_law_of_thermodynamics