This is a slightly-redacted version of a talk I gave to 400 fourteen/fifteen-year-old students. A spoken event is different from a written event. But I hope this gives the gist. I’m going to talk about acornology. It isn’t a GCSE subject but it absolutely should be because – and dare I say this is an academic establishment? - it’s more important than Maths, English, History, Physics, Geography – possibly even Latin. And I am going to talk to you as adults. Now I don’t think anyone can become an adult …