SM does not guess quantised spin
I guess SM predicts quantised spin...somewhere..
By SM.. the socalled Standard Model
I guess THHNew is referring to the QED/QCD/ SU??? composite of ninety years of post-Bohr trial and error
Brett Holverstott refers to the "Quantum bubble"
Sean Carroll describes quantum mechanics as an “incredibly successful theory” but the frequency with which we hear this refrain does not make it more true.
It is in fact a hot mess defined by constant failure and revision in the face of new experimental data.
The theory has never been compatible with special or general relativity; it didn’t predict electron spin,
and it failed to predict a host of subtle changes in electron energy levels
such as the Lamb Shift, Fine Structure, and Hyperfine Structure.
Yes it can calculate the excited state energies for hydrogen,
but not for helium or anything that comes after.