In Part 4, I presented a nifty result supporting my claim that classical statistical mechanics reduces to thermodynamics when Boltzmann’s constant 
approaches zero. I used a lot of physics jargon to explain why I care about this result. I also used some math jargon to carry out my argument.
This is a companion discussion topic for the original entry at https://johncarlosbaez.wordpress.com/2024/10/02/the-space-of-physical-frameworks-part-5/