Well, I don’t think so, but if I’ve misunderstood something I’d appreciate your enlightening me. The point is that if I make a measurement (or prepare a state) at time t1 and again at t2 > t1, with no intervening measurement, then I have no experimental evidence for *how* the system got into the state I observe at t2. The Copenhagen interpretation tells me that it collapsed in an instant, at t2, but if instead I assert (as I do!) that it changed smoothly during the interval (t1,t2), there is no experimental evidence that can prove me wrong. Therefore I conclude that (A) my explanation cannot be refuted by the experimental record and (B) in particular, if there’s any failure of conservation, it can’t be measured.
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