A New Comment on Dyson's Exposition of Feynman's Proof of Maxwell Equations

A paper by Dyson, published nearly two decades ago, describing Feynman's proof of Maxwell equations, has generated many comments, analysis, discussions and generalizations of the proof. Feymnan's derivation is assumed to be based on two main sets of equations. One is supposed to be the second law of Newton and the other a set of basic commutation relations from quantum physics. Here we present a new comment on this paper, focusing mainly on the initial arguments and applying a new method of analysis and interpretation of physics, named observational realism. The present discussion does not alter the technical steps of Feymnan, but do clarify their basis. We show that Newton's physics is not a starting point in Feymnan's derivation, neither is quantum physics involved in it, but the foundations of relativity only.