Hell Fast: "Any system that can be distinguished from its environment will act to minimize its variational free energy, which serves as a measure of "surprise" or "prediction error"."

2008年，我在《轻灵韵》最后一页写的总结：存在的原因，在于存在定义的本身 ‘‘what must things do, in order to exist?’’ ‘‘if things exist, what must they do?’’ More formally, if we can define what it means to be something, can we identify the physics or dynamics that a thing must possess? 二者的想法是一样的，那时候就有FEP了