A Warp In Light Speed?

A WARP IN LIGHT SPEED as new physics paper published a study of a 1987 supernova where the light took longer to get here than the neutrinos, yet it was ignored by most scientists. It has lots of tough stuff in it, but the reviewer’s last sentence is key: “If he’s right—that the speed of light is slower than Einstein predicted—that is hugely significant. We’ll be watching to see what happens next”. Link: https://medium.com/the-physics-arxiv-blog/first-evidence-of-a-correction-to-the-speed-of-light-65c61311b08a