No one likes being told they’ve never had it so good. When Lord Young of Graffham tried it three years ago, he was quickly forced out of his job as David Cameron’s enterprise adviser. And rightly so, you might think, for it was an affront both to the evidence before our eyes and to our most basic human instinct: that the past was golden and ahead of us lies only misery, penury, falling standards, overcrowding and the on-going destruction of our once green and pleasant land.