Academic freedom has always seemed a weird concept to me. I mean, universities generally promise it to their professors; I’ve seen many people argue for it; I’ve hardly seen anyone argue against it (at least not in principle – it’s always “this is an exception” rather than “the rule is wrong”); but still, the whole idea seems so naive. When someone has been hired as a world-class expert, has been entrusted to teach others, and then reveals himself to be a prize ass, how can an...