It suits tech moguls like Elon Musk to rant about 'freedom of speech' while campaigning against the EU Digital Services Act – the very law that is lifting the lid on vested interests behind such speech. Photograph: Michael Gonzalez/Getty Have you ever found yourself expressing a point of view and suddenly wondering: “Where did I get this opinion from?” In that flicker of self-awareness you will have caught sight of a lesser appreciated liberty – freedom of thought. We hear a lot about freedom of speech these days – and how it must be either protected or policed – but...