Eureka had a brainstorm thought about it and can falsify your light/mirror boundary example Paul.
Simply put the mirror and torch in motion together
http://www.nature.com/news/2011/110603/full/news.2011.346.htmlhttp://io9.com/5806580/mirrors-can-actually-create-light-through-the-magic-of-quantum-weirdnessThe mirror has to be special but it is now emitting light back at the light bulb.
Now I am going to get really funky and select the movement speed of the mirror tourch combo to make the mirror emit a specific frequency that is just below the emission frequency of the light bulb or led. It may require single photon frequency conversion to get the exact frequency required I haven't bothered with looking at the exact mathematics.
Remember laser cooling which we discussed at length in a post guess what the mirrors emission is now going to do ... haha?
Did you guess it the mirrors emission is going to cool and put out the light bulb emission.
Now that is really weird and as much as you probably are scratching your head if I could engineer that QM experiment the mirror would indeed be made to emit and put out the light.
See you need to be very careful about insisting things because there are some really weird conditions you can setup under QM.
Hence I have proved with a fully testable experiment that your one way directionality of light from bulb to mirror is not a fundemental law it is a generalization and there are weird reversals of that scenario possible using QM.
Its weird its extremely unlikely and your will never see it in nature BUT IT IS POSSIBLE
