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I have claimed now for years that the true equations of electromagnetism result from taking the square root of the wave equation on differential forms on a four sphere with radius $1/h$ where $h$ is Planck´s constant.  If $M$ is an embedded three dimensional manifold with a local orthonormal coframe $\omega_1, \omega_2, \omega_3, \omega_4$ with $\omega_4 = 0$ defining $M$, and if $D$ is the Dirac operator on forms on the ambient four-sphere and $H = D\omega_4$ then the restriction of the square root of the wave equation is the square root of the operator $(D_M + H)^2 + \partial_t^2$.
If we are able to fully connect the observed electromagnetism with this picture, we would have given justification for the naturality of electromagnetism as a feature of the shape and other attributes of our universe and remove theories that posit any supernatural designer of the universe.  An eternal stationary (unless $h$ changes) universe cannot have been created by a creator-God either.