Epistemology of Quantization
  A notion of quantization is proposed that is independent of the original statistical interpretation of the distribution of energy in a photon gas or of the quantization of angular momentum in hydrogen atom. Such a procedutre implies the existance of finite space-time four-interval that any relativistic preparation and measurement of a physical event requires. That finite four-interval is also the epistemological source of QM uncertainty relations. Furthermore, the consetrvation of helicity in the propagation of a photon is a relativistic invariant, and is the origin of the "appearence" of a paradox of nonlocal interaction in Bell's inequality [2,3,4] as shown in A. Aspect et all [5] experiment. That is a spin of a photon is always correlated with its momentum. 
George B. Cvijanovich