It's kind of amazing that the Stanndard Model, which by any objective measure has been a stunningly successful theory, can be both incredibly accurate and ludic

It's kind of amazing that the Stanndard Model, which by any objective measure has been a stunningly successful theory, can be both incredibly accurate and ludicrously inaccurate. The magnetic moment, which you mention, is an example of the latter, accurate to 8-10 significant digits. An example of the latter is the so-called "vacuum catastrophe" where QFT predicts the energy of a vacuum and is off... by 120 orders of magnitude. Like no one really knows why we have three generations of particles and what that means or why they're so massive. I only found out about hyperons [1] last year, where (at least) one down quark is replaced with a strange quark. And this matter has weird properties. IIRC the nuclei get smaller. Many years ago I'd assumed it was only a matter of time until we make significant progress merging quantum mechanics and gravity but honestly, I'm starting to have doubts. The universe is under no obligation to make sense or give up its secrets. Just like in maths, some things may be unknowable. [1]: https://en.wikipedia.org/wiki/Hyperon https://en.wikipedia.org/wiki/Hyperon