Not so long ago we were reading that CERN may very well struggle to prove the existence of mysterious “Higgs-Boson” particle; such fun, you might say, since if it does not exist, physicists will have to rethink a great deal of “stuff” (i.e. the Standard Model of the universe…). But today, the Telegraph and the Beeb report that the great universal constant – the speed of light – may not be so constant after all. I rather like all this – because it means, mutatis mutandis, we do not know everything, or, indeed, very much of anything (on the whole), about the universe. Which just makes finding out about it all the more fascinating. Wow, as Brian Cox might say.