Letter to the Editor - Anti-vaxxers, Holocaust deniers, flat earthers and others" should be denied a platform

To The Age        If Adrienne Stone really believes that "unorthodox ideas should be welcomed and offensive ideas must be tolerated" in universities ("Free speech vital to universities", 16/10), then she should not be asserting that "anti-vaxxers, Holocaust deniers, flat earthers and others" should be denied a platform there. Dismissing these or any other positions as "nonsense" that "blatantly disregards" so-called established evidence is too risky and might turn out to be ignorantly prejudiced, as Galileo's case and others in history show. Stone's choice of these three categories is also questionable. There's not much sign of flat earth promotion around the world, but there's a large amount of what looks like carefully researched and argued material by Holocaust revisionists.
  Nigel Jackson, Belgrave, Vic