Racing is famously described as living in its own little bubble. (People often say this crossly, with exasperation.) And it is, in many ways, a world of its own. It is so specialised and so absorbing and so difficult to understand for those outside it. It even has its own language - arcane technical terms and ancient slangs which few people beyond Newmarket and Lambourn understand. Yet racing people are also human people. They do live in the real world. They watch the news. They feel the terrifying clashes of...