Why do diamonds cost more than water despite being a lot less useful? Why queue at holes in the wall for pieces of paper and then hand them over for things we really need? Why can’t economists predict recessions, even though they think of themselves as scientists? If AI is taking over, does that mean we should get rid of lawyers, accountants and teachers, and instead train students to mend taps?

Why do farmers fear a bumper harvest? Why do governments that spend less end up owing more? Why ...