Within countries, inequality of income, wealth and opportunity is arguably greater than at any time in the last century. Across Europe, Asia and the Americas, corporations are bulging with cash as their relentless drive for efficiency continues to yield huge profits. Yet workers' share of the pie is falling, thanks to high unemployment, shortened working hours and stagnant wages. Paradoxically, cross-country measures of income and wealth inequality are actually falling, thanks to continuing robust growth in emerging markets. But most people care far more about how well they are doing relative to their neighbours, than to citizens of distant lands.