In the aftermath of the Iranian revolution in 1979, the UK foreign secretary commissioned a secret internal inquiry into why British diplomats had failed to predict it. One problem, the report found, was that the embassy in Tehran had little contact with people beyond the elites around the shah.
Subsequent generations of diplomats have taken this lesson to heart. They prize what they call “ground truth”: how things really feel out there; what people are really thinking. One former ambassador to Iran used to check whether his staff’s shoes were dirty. “If not, I knew they hadn’t been getting out of the embassy and meeting people in town.”
The economics profession could learn from this. Look through a few spreadsheets on the UK economy in recent years and you might wonder why people have not been dancing in the streets. Unemployment is 5 per cent, the lowest in 11 years. Participation in the labour market is near a record high. Income inequality, far from rising, has actually declined since the financial crisis. Yet 52 per cent of voters have just chosen to leave the EU.