I'm hardly an expert on this matter, basically just an overinformed layman, but I think it might be somehow relevant to some of the points above that from the photon's (extremely skewed!) reference frame, no time would pass between test A and test B (I'm not referring to papageno's A & B photons here). Perhaps this might help understand how the results of the second test can affect the first test?
One of the related things I find terribly weird also involves polarization. Apparently, if you arrange two planes polarized perpendicular to each other (I'm going to make some extremely simple diagrams here, imagine that the light passes through perpendicular to each figure, and on to the next figure (if it does)):
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light will not pass through, because it's vertically polarized by the first, and vertically polarized light cannot pass through the horizontally polarized plane.
But if you insert an extra piece of material diagonally polarized,
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the light manages to pass through! It's vertically polarized by the first, and then...?? I don't know. Haven't tried it myself, but this is what I've read. And I think I might find it even more perplexing & astounding than QE, even if it isn't as impressive (particularly to the layperson). :-k #-o
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