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Yes, a very interesting piece of work, but it needs a lot more work done on it before I'll be happy to take their conclusions at face value. I think they need to explore every possible permutation of instrument error, procedural differences in making calculations, the size of their surveys, what they're actually surveying etc etc, before they can come out and say with any certainty that the fine structure constant is variable after all. They have some interesting findings, but they're far from conclusive.
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