I sat on a deep stone ledge bounding the enormous terrace of the Norway National Museum, stretched out under midsummer cloud, feet dangling. Two seconds later security appeared in a black uniform with badges. “One foot on the ground at all times” he said. I obeyed. He smiled and continued: “Norway is a rich country, and they think ‘how can we achieve 100% employment?’ The answer is through imagination. Imagine if you lift both feet you turn ...