All matter and energy is constantly in flux. What appears to be solid, such as a desk, is actually made of trillions of tiny atoms, each one vibrating in place, and each one made up of waves of electron fields around nuclei that are made of vibrating protons and neutrons which are in turn made of moving quarks. Force fields are in flux because they emanate from matter which is in flux, and force fields aren’t matter or energy anyway—they’re just mathematically defined causal relationships between physically existing things.
The laws of physics appear to be static, but they all boil down to two aspects: 1) the aspect of it that is necessarily true just because it’s logically consistent with the of physics. This aspect is why we’re able to do derivations in physics; and 2) the aspect of it that comes purely from observations. The first aspect is necessarily static just because logic itself can’t logically be any different, but there’s no justification to assume the other is static just because the observations seem consistent over time. Since everything else we observe is in flux, chances are that those things are in flux as well—they just change too slowly to be noticed.
Add to this the fact that there’s no ultimate way to distinguish between the physics of matter and energy and the physicality of it. The so-called “laws” of physics are not a separate thing “acting on” matter and energy. The closer you look, the more these two things blend together. One way of saying this is that form is function. How can you know the form of something other than through how it interacts with the observer? And how it interacts with the observer is its function. And the functionality of matter and energy is the physics of it.
All of physicality boils down to matter, energy and fields. Matter is in turn a pattern of seething energy, and fields. Can’t, even in principle, be defined or observed in any way other than as causal relationships between matter, so it’s safe to say that fields are merely an aspect of physics. And what is energy other than behavior patterns, and what determines its behavior if not the internal logic and mechanics of it which is what physics reveals? Also, as I mentioned in my last essay, Emmy Noether proved that the conservation of energy logically follows from the consistency through time of the laws of physics. And what is the concept of energy other than an invariant? What sense would energy make if it weren’t conserved?
So, everything physical is in flux, and there’s no ultimate way of distinguishing between physics and the physical. And physics is derived from only from a combination of observations and pure logic, while we can only observe the physical and most of what we observe seems to change constantly. So all of this would seem to suggest that the constants in physics, such as the speed of light and the gravitational constant for example, aren’t actually constants but are only assumed to be because they’re so slow to change. They’re part of a cascade of change that makes up the physical world, from the most universal and slowest to the most local and fastest.