But this idea that racism will vanish if we just refuse to discuss it is rather fascinating. Imagine for a moment if scientists and engineers thought in this way. Imagine they said ‘Right, the best way to solve a problem is not to discuss, confront or challenge it, but to leave it alone completely and hope it just works itself out.’ There would have been no political, moral, technological, medical, material or mental progress ever in the fragile history of our species if people hadn’t decided to confront difficult problems with dialogue and then action.