But if we accept "dynamism" as an axiom, then you have no way to know what A is at any given time. For it to be an objective truth, you have to assume that it remains unchanged. If its properties changed due to dynamism -- well, then, the idea that A is an objective truth is no longer true -- what was true at one instant may not be true the next.
Thus, even "A is A" requires you to make non-objective assumptions about the nature of any A you happen to be considering.
But if we accept "dynamism" as an axiom, then you have no way to know what A is at any given time. For it to be an objective truth, you have to assume that it remains unchanged. If its properties changed due to dynamism -- well, then, the idea that A is an objective truth is no longer true -- what was true at one instant may not be true the next.
Thus, even "A is A" requires you to make non-objective assumptions about the nature of any A you happen to be considering.
You have no idea how hard it is not to be sarcastic. I have very patiently pointed out in other posts, "A is A" is epistimological, not metaphysical. "A" can be any concept. For example, let A be a clock.
Now a clock cannot be a clock unless there is change, namely, the moving of the hands of the clock (or the changing of the numbers if it is a digital clock). In this case, A would not be A if there were not change (or A is a broken A).
Why is this so hard to understand?
Here are some more As that could not be As if there were no change: an explosion, a flame, a river, a symphony, a dog, a cat, (or any other living organism).
I think the problem is that you do not understand the identity of a thing is determined by its qualities. Some changing characteristic is a quality of many things, including all living things.
Now consider your statement, "but if we accept "dynamism" as an axiom, then you have no way to know what A is at any given time." So, let's assume you have a child. Your statement would mean, since children almost never cease to be in motion, you could never know your child was a child, much less yours, because it was changing. You must live in a very uncertain world.
Hank