On 11/19/2019 11:41 PM, Philip Thrift wrote:
On Tuesday, November 19, 2019 at 3:59:47 PM UTC-6, Brent wrote: On 11/19/2019 1:43 PM, Philip Thrift wrote:A diffraction pattern emerges in video recordings of single-photon double-slit experiments whether anyone sees the video or not. what changes is the image on the video frame-by-frame. If you take a video of a an arrow shot from a bow, it follows a parabolic curve, and what changes is its position frame-by-frame.So when your path integral formulation predicts various probabilities for position of photon absorptions by the video camera nothing has changed when positions are actualized in the recording. All the same probabilities obtain. Which is the MWI view. BrentIn the cases of *Quantum Measure Theory* (Rafael Sorkin), *Real Path Quantum Theory* (Adrain Kent), or -- in another type of formulation -- *Cellular Automaton Interpretation* [of Quantum Mechanics] (Gerard 't Hooft), I don't see what "change" means in your terms.
Those methods assign probabilities (measures) to specific possible outcomes (measurements). When one is observed, it is used as an initial condition for further predictions. If it's not observed then further predictions are conditioned on all the possible outcomes. That's a change.
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