'The Devil's underwear': Why don't Swedes have curtains?

To the strictest Lutherans, they're dismissed as 'djävulens kalsonger', the Devil's underwear. But even the most secular Swedes seem strangely averse to curtains. Richard Orange investigates this puzzling Swedish phenomenon. https://www.thelocal.se/20201125/the-devils-underwear-whats-behind-swedes-aversion-to-curtains