And the Pauli Exclusion Principle is just that two masses cannot occupy the same space, at the same time. Whereas \(\psi\), (\(m=0\)) can occupy the the same space, at the same time.
What about energy state? Given an invariant field, space and time determine energy state fully. If spins have a physical interpretation, then they would sum and cancel. Pairs of fermions will have integer spin, or their spins can cancel to zero.
And
\(s^2_f=s^2_p+s^2_r\)
If \(s=s_p=s_r\)
\(s_f=\sqrt{2}s=1.4142s\ne 1.5 s_p\)
how unfortunate.
