If the Bekenstein Bound states that no infinitely fast state changes occur then it is proved wrong by the electron orbital shift when it absorbs a photon. On my post yesterday about EM fields, QED, etc.; sorry for the confusion, I read it this morning and groaned. Perhaps it was the glue which permeated the building yesterday (repairing stairwell outside my office) which caused my brain to become stupid. I aplogize and agree that I got it bass-ackwards... The point I was trying to make was that EM fields themselves are NOT QM, their interaction w/ Hadrons ARE. Leptons themselves (which a photon and a electron are) are not constrained by the same rules that limit Hadrons because Hadrons are made from Quarks. Last time I checked Leptons don't care a flip about color, charm, etc. The uncertainties which arise in QM arise from the interactions of Hadrons. If a system does not involve a Hadron then it is pretty deterministic, sorta like a billiard ball. However, there has been some research recently (there was an article in SciAm, had a pool table on the cover) where they were discussing chaos and the pooltable which brings into doubt even the premise that macro-scale interactions are perfectly deterministic.