**David J. Hand *is emeritus professor of mathematics and senior research investigator at Imperial College London, a former president of the Royal Statistical Society, and a fellow of the British Academy. His many previous books include The Improbability Principle *, Measurement: A Very Short Introd...

**David J. Hand *is emeritus professor of mathematics and senior research investigator at Imperial College London, a former president of the Royal Statistical Society, and a fellow of the British Academy. His many previous books include The Improbability Principle *, Measurement: A Very Short Introduction, Statistics: A Very Short Introduction, and Principles of Data Mining.