“There they are, the professor and the prodigy, and what they prodigy clearly wants is to be engaged, at long last, with a mind that loves mathematics as much as he does. But he fails. In fact – and this is the most heartbreaking part of all – he manages to have an entire conversation with his calculus professor without ever communicating the one fact most likely to appeal to a calculus professor. The professor never realizes that Chris Langan is good at calculus.”