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Consider a visible photon, emitted from a single event. Its energy is about 2 eV.Now consider a wave spreading out from a point source. The energy density at any point a distance r from the source must be E/4πr^{2} eV/m^{2} where E is the original energy of the source event.Now we detect our photon, a light year away from the star that emitted it. Ignoring a bit of red or blue shift, the detection event releases 2 eV. So if "wave function collapse" has any real meaning, all the energy that was dissipated over an area of 4π (light years)^{2} has instantaneously and simultaneously condensed on my detector. This means that some energy has travelled 2 light years in no time at all, and arrived in the right place, with no prior warning or loss. So let's pretend that relativity is wrong and there is no upper limit to the speed at which information can travel. We still have an anomaly because some of the energy travelled only a very small distance, some travelled 2 light years, and yet it all arrived at the same time. How did it know how fast to travel, let alone where to go? The simple fact is that "duality" is completely illogical. The world behaves as it does and we have to choose an appropriate model to predict it, but the model is not the reality, any more than you can grow potatoes on a map of Ireland.

The flaw in this argument is that you assumed that the location of the energy was known before you measured the position of the photon. It's not.

Consider a visible photon, emitted from a single event. Its energy is about 2 eV.

How about: There is no duality, because the photon is neither a wave nor a particle; it appears to us as one or the other because of the different ways in which we observe/interpret it?