What kinds of poor behaviour should we tolerate? How much should we tolerate? There’s a wellspring of opinion that zero tolerance is too much, that we ought to tolerate some poor behaviour, but how much? I don’t think anyone would be prepared to argue that we should tolerate 100%, so is 50% OK? 25%? 10%? Clearly, having a discussion about the percentage of poor behaviour which we ought to tolerate is absurd. Maybe we’d be better off debating whether some…