“What’s your favourite number?”

Mathematician Alex Bellos was intensely irritated by the question. Was that person in the audience mocking him, or possibly ridiculing what he’d been saying about mathematics, to ask such a bizarre and irrelevant question at the end of his lecture? The audience member had asked him, as others had done before, “What’s your favourite number?” In this podcast conversation from Radiolab, Bellos describes his abrupt shift of perspective as he realizes that the questioner is asking in sincerity. Quickly, he discovers ...