Most information about the incomes of people in Britain today, such as provided by official statistics, tells us how much inequality there is or how many poor people there are in a given year and compares those numbers with the corresponding statistics from the previous year. Missing from snapshot pictures like these is information about whether the people who were poor one year are the same people who are poor the following year; and the circumstances of those with middle-income or top-income origins are not tracked over time. This book fills in the missing information. The author likens...