RealQM/RealNucleus is not “electron + proton, all — no Standard Model.” It is a far narrower claim. Its one genuine challenge is that the strong force may not be needed to bind the light nuclei — Coulomb geometry of proton and electron charge clouds might do it instead. Even that is partial (clean on the alpha-conjugate line, strained on the odd nuclei). It leaves entirely untouched the things that are directly measured: the quarks inside the proton (deep inelastic scattering), the weak force and neutrinos (reactor and solar detection), the W/Z/Higgs and QED-to-twelve-digits. The “proton as a unit charge” is an effective description — fine for Coulomb binding, like treating atoms as points in chemistry — not a claim that quarks are not there.
The Standard Model carries about nineteen free parameters — the fermion masses, three gauge couplings, the mixing angles, the Higgs sector — every one a measured input, none derived from within. Its content is large: six quarks, six leptons, the gauge bosons, the Higgs. This is, by the physics community's own admission, a real source of theoretical dissatisfaction: the search for grand-unified and beyond-Standard-Model theories is driven precisely by the hope of fewer parameters and a simpler structure.
RealQM/RealNucleus stands at the opposite pole: proton + electron + Coulomb, real-space, deterministic, with essentially no fitted parameters — and from that it captures a great deal: the periodic table, molecular geometry, hydrogen bonds and reactive chemistry (RealQM), and light-nucleus binding and alpha decay (RealNucleus).
Honesty about reach is worth keeping, since it is what makes the parsimony claim precise rather than loose: RealQM is a firm, near-complete effective theory in chemistry (where the Standard Model is largely dispensable), and RealNucleus a bold, partial one for nuclei (parameter-light not free — one deuteron calibration, an assumed shell geometry — reaching the alpha-conjugate line and alpha decay, silent on the weak sector). The case for the two-ingredient model rests on what it predicts, and it predicts a great deal from almost nothing. The defence of nineteen parameters can be left to the Standard Model's proponents; the voices below are theirs and their critics', in their own words.
On unexplained parameters and the danger of fitting:
“With four parameters I can fit an elephant, and with five I can make him wiggle his trunk.”— John von Neumann (recounted by Fermi to Freeman Dyson, Nature 427, 2004)
“A magic number that comes to us with no understanding by man — you might say the ‘hand of God’ wrote that number, and we don’t know how He pushed His pencil.”— Richard Feynman, on α ≈ 1/137, QED: The Strange Theory of Light and Matter (1985)
On the empirical triumph:
“If you were to measure the distance from Los Angeles to New York to this accuracy, it would be exact to the thickness of a human hair.”— Richard Feynman, on the agreement of QED with experiment (the electron g−2)
On the virtue that decides it:
“A theory is the more impressive the greater the simplicity of its premises, the more different kinds of things it relates, and the more extended its area of applicability.”— Albert Einstein, Autobiographical Notes
Feynman stands on both sides — awed by the precision, troubled by the unexplained constants: the theory's own master held both at once.
This is the sharpest and most honest point of the comparison, and it survives any expert reading. The Standard Model — praised as the crowning achievement of physics — cannot compute nuclear binding energies from first principles for real nuclei. Its fundamental theory of the nucleus is QCD, and low-energy QCD is non-perturbative plus a many-body problem: lattice QCD reaches only the very lightest nuclei, at unphysical quark masses, with large uncertainties and open controversy. For the nuclear chart, at physical parameters, it computes nothing. Worse, binding is a tiny residual — ~8 MeV per nucleon on a ~938 MeV mass — below the resolution of what lattice QCD can reach.
The precise, unassailable statement: the celebrated Standard Model cannot compute a single nuclear binding energy at physical parameters — the binding that holds together 99.9% of ordinary matter — while a proton–electron–Coulomb model computes the alpha-conjugate ladder from one calibration. Nuclear binding is measured (mass defects) and fitted by effective models (liquid drop, shell, χEFT with 5–30 constants); it is not computed by the Standard Model. RealNucleus is not another fitted model — it uses the known Coulomb law, not a fitted force, and predicts binding with essentially one calibration. In the very domain where the fundamental theory computes nothing, the parsimonious model computes; the honest scoping of the SM's fame is “the most successful theory in the weak-coupling domain,” not “the theory of matter.”
The electron's magnetic moment matching theory to twelve digits is the Standard Model's showpiece, and it is worth keeping in perspective. Its leading physics is one line — Schwinger's $\alpha/2\pi$ — already good to three digits, about 99.85% of the value. The twelve thousand further diagrams refine digits four through twelve: they add precision, not new phenomena. No new physics emerges between the third digit and the twelfth; it is the same effect, pinned finer.
Two things this does not say, kept precise so the point holds: the leading term is simple, but the model (a full renormalized quantum field theory) is not; and g−2 does represent something real — the electron dressed by vacuum fluctuations — its leading effect merely small because the coupling is weak, not because the physics is trivial.
And the lesson cuts for parsimony: “one deep, simple term captures the main effect” is exactly RealQM's own mode — the periodic table, hydrogen bonds, alpha-conjugate binding, all leading-order captures from a simple model. Schwinger's $\alpha/2\pi$ is a witness for the thesis, not against it: the physics lives at leading order, and a simple model that gets the leading effect is worth more than a headline about digits.
| domain | how much of the SM matters | program standing |
|---|---|---|
| atoms / molecules | very little — Coulomb QM is nearly complete; the real caveats are relativistic (Dirac/QED) effects for heavy elements (gold's colour, liquid mercury, spin–orbit) and electron spin (magnetism, exchange, singlet/triplet). Weak, strong, Higgs are essentially irrelevant. | firm — the SM is largely dispensable here; Coulomb QM is the correct effective theory, and RealQM is a legitimate, parsimonious version of it. |
| nuclei | almost all of it — the strong force (binding, the nucleon force, ~99% of the nucleon mass), the weak force (decay, neutrinos, nucleosynthesis), the Higgs (quark masses, the delicate n–p mass difference), and EM. | bold / partial — the SM is central; RealNucleus captures a slice (alpha-conjugate binding, alpha decay) and omits the rest. |
Of real, measured, applied importance:
Foundational theory, but rarely a practical tool:
The asymmetry explains the two very different footings, and it is the honest bottom line: