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The Free Energy Principle and the Variational Framework
The free energy principle tells you what must necessarily be true of any system that exists at non-equilibrium steady state. So it doesn't make sense to say, is the free energy principle true or false? It's like, well, it's the same status as calculus. You don't disprove calculus. If there's a problem with calculus, you derive a contradiction, right? Or you show that this or that kind of bit of the formalism doesn't follow. The free energy principle is very much the same thing. We have a low entropy because the probability of finding this arrangement of atoms in this state is incredibly low.