A plausible way of looking at this is with cloning. Quantum mechanics tells us that a quantum state can't be duplicated by unitary quantum processes or evolution. Yet from a classical perspective we can clone things, we can duplicate classical objects and we can set up identically prepared quantum states. Admittedly we do these within some "error margin," but we can do it well enough. So one might posit there is some classical "cloning principle," which is a top down rule that does not pertain wo the quantum world.
Cheers LC