  A previous paper demonstrated that two local, realistic models based on
Markov Random Fields (MRF) across space time do replicate the correct, tested
predictions of quantum mechanics for simple Bell Theorem experiments. This
paper demonstrates a third such model, MRF3, which is more plausible
physically, making contact with the physics of polarizers. It shows how to
translate that type of model into an equivalent quantum mechanical model, which
requires an augmentation to the usual measurement operator now used to
represent polarizers in such experiments. The validity of that augmentation may
be testable in experiments involving three or four photons, with relevance to
quantum computing and communication.
