 I'm in support of this. I get it now. I thought it was weird at first, but I've acclimated. Listeners, maybe you've tried sleep divorce, terrible term, and it's stopped you getting a real one. Do share your story on unexpected at bbc.co.uk. Still to come on the show, what one scientist can tell from admiring a 5,000-year-old ring. That's coming up after this.