If, as a child, you are struck or hit, you will never forget that sense of your own powerlessness and vulnerability, of how a situation can turn from benign to brutal in the blink of an eye, in the space of a breath. That sensibility will run in your veins, like an antibody. You learn fairly quickly to recognise the approach of these sudden acts against you: that particular pitch or vibration in the atmosphere. You develop antennae for violence and, in turn, you devise a repertoire of means to divert it.
