Some big fibs have endured longer than any others. “The cheque’s in the post,” for example. Or: “No, darling, you look lovely in that.” And finally: “Our people are our biggest asset.”

Here is a terrific new book that explodes the last item in that unholy trinity. The truth is that not every employee is such a huge asset, or “talent”, to use the fashionable term. Only some of your people are your biggest asset. The point is to spot them, nurture them – and know when to leave them well alone.