I spend a lot of time talking about Duran Duran wallpaper. People know this about me. I think it’s largely because when I was plastering my bedroom walls with images of Duran Duran and John Taylor, it didn’t occur to me that millions of girls before me had done it. Equally mind-boggling is that millions of girls after me surely did the same thing with the band or teen idol of their choice. What is it about evolution that drives adolescent females to such extremes of home decor?…