Sneak Quantum Peak:
Within the next few weeks, I will be posting an interpretation of Quantum Theory which is in resonance with the current standard model, including two important CURRENT features: a denial of any better future "hidden variable" theory, and a validation that mathematical probabilities will be the only type of predictions ever made, but all within the context of an Objective "Base" Reality that exists independent of observation.
The Dirac Equation is Relativistically Invariant.
Proof attached.
Proving the Relativistic Energy-Momentum relation, the hard way and the easier way.