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I would venture to say no, the constants of physics do not remain ‘constant’ or unchanging.The physical conditions of measuring or defining any particular condition are subjective, even when performed by computers. We have to agree with certain generalities in most cases.

What Born and so many others were after was a unifying theory that would demonstrate that there could only be one unchanging value for a constant. Without this theory, scientists resort to testing limits of a constant. Measuring the constant is a good way to verify that theories using them make sense, that science stands on firm ground. Error from the measurements can be a huge concern. So, instead of validating the masses of protons and electrons, it's useful to measure the ratio of their masses, a number that is free of the burden of units.

The search for a unifying theory continued..........

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I was able to keep up until right here....but I could have followed along better if there was something --like a trail of zircons to follow which could lead to some kind of a corresponding result.

Lee, I think you're conclusion is far closer then what I surmised:

"The physical conditions of measuring or defining any particular condition are subjective, even when performed by computers. We have to agree with certain generalities in most cases."

The constants probably are, but the human capacity for determining them is not. Therefore, the VALUES associated with those constants change, not because they themselves are changing but because we, the observers, are.

Which I realize is a bit Zen ...

Well, if that cat hating Schrödinger is to believed, it all depends on the observer.

Which could mean, the the one true constant in the universe, is change. Even if other aspects of the universe are fixed, from a certain point of view, change is always there.

But what do I know. It’s not up to me anyway. Or maybe it is.

“I would venture to say no, the constants of physics do not remain ‘constant’ or unchanging.”

Is there the _slightest_ evidence that those constants aren’t?