Physics in The Philosophy for the Future
There is a lot of physics in The Philosophy for the Future. Chapter 3 contains a section titled The Nature of Scientific Theories. It discusses some of the general mathematical principles underlying physical theory.
In general, physical entities, attributes of the physical world, must be invariant with respect to transformations of those aspects of our representations that are not aspects of the physical world. Coordinate systems are but one example. I will call this idea the principle of representational invariance.
This principle leads to many of the deep symmetry principles embedded in our physical laws. It also highlights one of the chief difficulties of theoretical physics, distinguishing attributes of our subjective experience and mathematical representations from attributes of the real world. This is probably at the root of the difficulties of quantum mechanics (QM).
Chapter 4 is entirely devoted to my view of the current state in modern physics and the worldview it implies. I imagine it is a difficult read for those not versed in the jargon of physics, but to whet your appetite, here is the next to last item in the chapter:
We have reached the end of a long and sometimes very technical chapter. We have surveyed a great part of the spectrum of modern physical theory. From thermodynamics and the mystery of time to cosmology and the structure of the universe; from relativity and the theory of gravitation to quantum mechanics and the theory of the subatomic, this grand body of knowledge forms the foundation of the scientific worldview. On this basis, almost all humanly accessible phenomena can be explained, and from this basis I will extend this worldview of science, known as physicalism, outward to envelope life and humanity.
I admit, even relish, that the foundation of physics is incomplete. Great mysteries remain: the arrow of time, the quantum measurement problem, the problems of cosmology. The great problem of unification overshadows all of them. Even as I write, these problems are under attack by the relentless soldiers of science, armed with the cold steel of the scientific method.