Two thoughts strike me about this unfortunate incident. The first is that I can see how it might have happened. “Podestrians”, as they are known to the emergency services, now account for one in 10 of all minor accidents involving the sudden braking of cars or bikes. There is a path I cycle along on my way to the station. Joggers use it too and, whenever I approach one from behind, I ring my bell. Usually it makes no difference because they are listening to their iPods. I don’t want to make them jump. I derive no satisfaction from it. In fact, I worry that I will give one of them a heart attack and this will be a great inconvenience to me, having to call the ambulance and then wait for it to arrive, holding their sweaty jogger’s hand while muttering words of comfort.