Physics seems to be one of the only domains of human life where truth is clear-cut. The laws of physics describe hard reality. They are grounded in mathematical rigor and experimental proof. They give answers, not endless muddle. There is not one physics for you and one physics for me but a single physics for everyone and everywhere. Physics often seems weird, but that's a good sign—it is not beholden to preconceptions. In a world that can seem claustrophobic, where the same debates go round in circles, physics injects some genuine novelty into life and jolts us out of the ruts we fall into.