It would be very surprising if quantum mechanics didn't add up to the normal classical world we experience or to classical theories we use because they work. Th

It would be very surprising if quantum mechanics didn't add up to the normal classical world we experience or to classical theories we use because they work. The story and explanations at the small level can have a totally different nature though. Another way to put it might be this - you say "accelerating electrons creates light", but how? Classical electrodynamics is one explanation, but it cannot explain all related phenomena. At small enough levels, you find details (like photons appearing in pairs) that need a different sort of theory to explain it. What then would you say about the path integral explanation of a mirror that needs all sorts of particle creation and destruction, including particles moving backwards in time, to explain what the mirror "does" even when it isn't moving?