*Looks up Routledge* Hang on—I had an aquaintance thirty years back who’d done maths at Cambridge and I’m pretty sure this is the prof he once reminisced about who, according to him, once drove himself and a vanload of students through the window of a chip shop and then said calmly: “Well, as long as we’re here…” I think it’s the same man because, according to my acquaintance, students were always warned not to get him started about Turing unless they wanted to hear all the details of their relationship…