Just saw this paper discussed (sort of) on Reddit, and wondered if it is old news. http://www.reddit.com/r/Physics/comments/tgvpn/a_rederivation_of_special_relativity_from_chaos/ (the URL is truncated so it gives the wrong impression ;)) I can't understand the maths behind it, but am very interested in the axiomatic basis of relativity, and eliminating the light speed reference is clearly a significant claim. The language of the paper is fairly idiosyncratic, and the author barely contains his utter contempt for Newton, which itself makes for an interesting read! I would be fascinated to hear the opinions of the wizards here, if it is correct, I would consider persevering to understand it myself. I just hope it wasn't an April Fools' joke that escaped . . .