They may also discover it is far harder to find a wife: study after study shows that men without steady employment are regarded as unsound marital bets. If Bridget Jones’s Diary were to be rewritten for the 2020s, she’d be poorer – and male. The phrase “purse-whipped” would be used in his diary. He might wish he had studied harder, the better to impress the high-flying Miss Darcy. But it may take until the next decade for that book to be written. Things are changing so fast that the idea of men being left “on the shelf” still sounds like fiction. But the market value of testosterone has never been lower.