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The speed of light not being constant? Lot's of things can slow light down - it's going faster then the speed of light in a vacuum that is interesting.
Oh, you mean the speed of light changing as the universe ages. yes, that's kinda interesting, but happens on a time scale so large as to be essentially irrelevant to we humans. It does suggest something curioous about the universe we inhabit, tho. Hah - we live in a bubble universe, and space and time are slowly changing as that universe undergoes heat death.
The neutrino thing would be neat, if it gets confirmed. I hope it does. Even a small possibility of breaking out of the light cone would be a thrill, and if anyway to do it happens during our lifetimes - well, pretty much nothing else that happened in that lifetime would be as cool.
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